Inorganic compounds that contain cadmium as an integral part of the molecule.
An element with atomic symbol Cd, atomic number 48, and atomic weight 114. It is a metal and ingestion will lead to CADMIUM POISONING.
Poisoning occurring after exposure to cadmium compounds or fumes. It may cause gastrointestinal syndromes, anemia, or pneumonitis.
A cadmium halide in the form of colorless crystals, soluble in water, methanol, and ethanol. It is used in photography, in dyeing, and calico printing, and as a solution to precipitate sulfides. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes.
A low-molecular-weight (approx. 10 kD) protein occurring in the cytoplasm of kidney cortex and liver. It is rich in cysteinyl residues and contains no aromatic amino acids. Metallothionein shows high affinity for bivalent heavy metals.
Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)
A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.19, symbol Pb. (Dorland, 28th)
A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.
Poly-glutathione peptides composed of (Glu-Cys)n-Gly where n is two to seven. They are biosynthesized by glutathione gamma-glutamylcysteinyltransferase and are found in many PLANTS; YEASTS; and algae. They sequester HEAVY METALS.
Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.
Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.
Scandium. An element of the rare earth family of metals. It has the atomic symbol Sc, atomic number 21, and atomic weight 45.
A field of chemistry which pertains to chemical compounds or ions that do not contain the element carbon (with the exception of carbon dioxide and compounds containing a carbonate radical, e.g., calcium carbonate).
A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.
A silver metallic element that exists as a liquid at room temperature. It has the atomic symbol Hg (from hydrargyrum, liquid silver), atomic number 80, and atomic weight 200.59. Mercury is used in many industrial applications and its salts have been employed therapeutically as purgatives, antisyphilitics, disinfectants, and astringents. It can be absorbed through the skin and mucous membranes which leads to MERCURY POISONING. Because of its toxicity, the clinical use of mercury and mercurials is diminishing.
Activity involved in transfer of goods from producer to consumer or in the exchange of services.
Detailed account or statement or formal record of data resulting from empirical inquiry.
Organizations established by endowments with provision for future maintenance.
The application of nutritional principles to regulation of the diet and feeding persons or groups of persons.
The collection, writing, and editing of current interest material on topics related to biomedicine for presentation through the mass media, including newspapers, magazines, radio, or television, usually for a public audience such as health care consumers.
Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)
A form of pneumoconiosis resulting from inhalation of dust containing crystalline form of SILICON DIOXIDE, usually in the form of quartz. Amorphous silica is relatively nontoxic.
An interactive process whereby members of a community are concerned for the equality and rights of all.
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.
Nanometer sized fragments of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY TECHNIQUES.
Field of chemistry pertaining to the study of inorganic compounds or ions and their interactions with biological ligands at the molecular level.
Materials that have a limited and usually variable electrical conductivity. They are particularly useful for the production of solid-state electronic devices.
Stable elementary particles having the smallest known negative charge, present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers, energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called CATHODE RAYS.
The theory that the radiation and absorption of energy take place in definite quantities called quanta (E) which vary in size and are defined by the equation E=hv in which h is Planck's constant and v is the frequency of the radiation.
Lists of persons or organizations, systematically arranged, usually in alphabetic or classed order, giving address, affiliations, etc., for individuals, and giving address, officers, functions, and similar data for organizations. (ALA Glossary of Library and Information Science, 1983)
Devices designed to provide personal protection against injury to individuals exposed to hazards in industry, sports, aviation, or daily activities.
Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.
The privacy of information and its protection against unauthorized disclosure.
A cabinet department in the Executive Branch of the United States Government concerned with administering those agencies and offices having programs pertaining to health and human services.
Healthy People Programs are a set of health objectives to be used by governments, communities, professional organizations, and others to help develop programs to improve health. It builds on initiatives pursued over the past two decades beginning with the 1979 Surgeon General's Report, Healthy People, Healthy People 2000: National Health Promotion and Disease Prevention Objectives, and Healthy People 2010. These established national health objectives and served as the basis for the development of state and community plans. These are administered by the Office of Disease Prevention and Health Promotion (ODPHP). Similar programs are conducted by other national governments.
The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.
New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.
A low-energy attractive force between hydrogen and another element. It plays a major role in determining the properties of water, proteins, and other compounds.
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Azoles of one NITROGEN and two double bonds that have aromatic chemical properties.
The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight [1.00784; 1.00811]. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.
Tellurium. An element that is a member of the chalcogen family. It has the atomic symbol Te, atomic number 52, and atomic weight 127.60. It has been used as a coloring agent and in the manufacture of electrical equipment. Exposure may cause nausea, vomiting, and CNS depression.
Inorganic compounds that contain mercury as an integral part of the molecule.
Agreements between two or more parties, especially those that are written and enforceable by law (American Heritage Dictionary of the English Language, 4th ed). It is sometimes used to characterize the nature of the professional-patient relationship.
Inorganic compounds that contain selenium as an integral part of the molecule.

Cloning and expression of cadD, a new cadmium resistance gene of Staphylococcus aureus. (1/228)

A cadmium resistance gene, designated cadD, has been identified in and cloned from the Staphylococcus aureus plasmid pRW001. The gene is part of a two-component operon which contains the resistance gene cadD and an inactive regulatory gene, cadX*. A high degree of sequence similarity was observed between cadD and the cadB-like gene from S. lugdunensis, but no significant similarity was found with either cadA or cadB from the S. aureus plasmids pI258 and pII147. The positive regulatory gene cadX* is identical to cadX from pLUG10 over a stretch of 78 codons beginning at the N terminus, but it is truncated at this point and inactive. Sequence analysis showed that the cadmium resistance operon resides on a 3,972-bp element that is flanked by direct repeats of IS257. The expression of cadD in S. aureus and Bacillus subtilis resulted in low-level resistance to cadmium; in contrast, cadA and cadB from S. aureus induced higher level resistance. However, when the truncated version of cadX contained in pRW001 is complemented in trans with cadX from plasmid pLUG10, resistance increased approximately 10-fold suggesting that the cadmium resistance operons from pRW001 and pLUG10 are evolutionarily related. Moreover, the truncated version of cadX contained in pRW001 is nonfunctional and may have been generated by deletion during recombination to acquire the cadmium resistance element.  (+info)

Evaluation of three gamma detectors for intraoperative detection of tumors using 111In-labeled radiopharmaceuticals. (2/228)

Attempts to detect tumors with intraoperative scintillation using tumor-binding radiopharmaceuticals have intensified recently. In some cases previously unknown lesions were found, but in most cases no additional lesions were detected. In this study the physical characteristics of three detector systems and their ability to detect tumors through accumulation of an 111In-labeled radiopharmaceutical were investigated. The first was a sodium iodide (NaI[TI]) detector; the second, a cesium iodide (CsI[TI]) detector; and the third, a cadmium telluride (CdTe) detector. METHODS: A body phantom and tumor phantoms (diameter 5-20 mm) made of water, agarose gel or epoxy with a density and attenuation coefficient similar to those of soft tissue were used to simulate a clinical situation. The activity concentration in the body phantom was based on reported values of 111In-octreotide in normal tissue in humans. The 111In activity concentration in the tumor phantoms varied from 3 to 80 times the 111In activity concentration in the body phantom. Data were processed to determine tumor detection levels. RESULTS: The NaI(TI) detector showed the lowest values for full width at half maximum because this detector had the best collimation, leading to a high ratio between counts from tumor and counts from background, i.e., small tumors could be detected. Because of high efficiency, the CsI(TI) detector sometimes required a somewhat shorter acquisition time to produce a statistically significant difference between tumor phantom and background. For deep-lying tumors the NaI(TI) detector was superior, whereas the CdTe detector was best suited for superficial tumors with a high activity concentration in the underlying tissue. CONCLUSION: At a maximum acquisition time of 30 s, almost all superficial tumors with a diameter of 10 mm or larger were detected if the ratio between the 111In concentration in the tumor and the 111In concentration in the background exceeded 3. However, in clinical situations, biologic variations in the uptake of 111In-octreotide in tumors and in normal tissue makes difficult the determination of a distinct detection level. For such clinical conditions, the NaI(TI) detector is the best choice because it has good resolution despite a lower efficiency. Documentation of detector characteristics is important so that clinicians can make an adequate device in relation to tumor location and receptor expression.  (+info)

A new Klebsiella planticola strain (Cd-1) grows anaerobically at high cadmium concentrations and precipitates cadmium sulfide. (3/228)

Heavy metal resistance by bacteria is a topic of much importance to the bioremediation of contaminated soils and sediments. We report here the isolation of a highly cadmium-resistant Klebsiella planticola strain, Cd-1, from reducing salt marsh sediments. The strain grows in up to 15 mM CdCl(2) under a wide range of NaCl concentrations and at acidic or neutral pH. In growth medium amended with thiosulfate, it precipitated significant amounts of cadmium sulfide (CdS), as confirmed by x-absorption spectroscopy. In comparison with various other strains tested, Cd-1 is superior for precipitating CdS in cultures containing thiosulfate. Thus, our results suggest that Cd-1 is a good candidate for the accelerated bioremediation of systems contaminated by high levels of cadmium.  (+info)

Azuki bean cells are hypersensitive to cadmium and do not synthesize phytochelatins. (4/228)

Suspension-cultured cells of azuki bean (Vigna angularis) as well as the original root tissues were hypersensitive to Cd (<10 microM). Repeated subculturings with a sublethal level of Cd (1-10 microM) did not affect the subsequent response of cells to inhibitory levels of Cd (10-100 microM). The azuki bean cells challenged to Cd did not contain phytochelatin (PC) peptides, unlike tomato (Lycopersicon esculentum) cells that have a substantial tolerance to Cd (>100 microM). Both of the cell suspensions contained a similar level of reduced glutathione (GSH) when grown in the absence of Cd. Externally applied GSH to azuki bean cells recovered neither Cd tolerance nor PC synthesis of the cells. Furthermore, enzyme assays in vitro revealed that the protein extracts of azuki bean cells had no activity converting GSH to PCs, unlike tomato. These results suggest that azuki bean cells are lacking in the PC synthase activity per se, hence being Cd hypersensitive. We concluded that the PC synthase has an important role in Cd tolerance of suspension-cultured cells.  (+info)

Metabolic engineering of an aerobic sulfate reduction pathway and its application to precipitation of cadmium on the cell surface. (5/228)

The conversion of sulfate to an excess of free sulfide requires stringent reductive conditions. Dissimilatory sulfate reduction is used in nature by sulfate-reducing bacteria for respiration and results in the conversion of sulfate to sulfide. However, this dissimilatory sulfate reduction pathway is inhibited by oxygen and is thus limited to anaerobic environments. As an alternative, we have metabolically engineered a novel aerobic sulfate reduction pathway for the secretion of sulfides. The assimilatory sulfate reduction pathway was redirected to overproduce cysteine, and excess cysteine was converted to sulfide by cysteine desulfhydrase. As a potential application for this pathway, a bacterium was engineered with this pathway and was used to aerobically precipitate cadmium as cadmium sulfide, which was deposited on the cell surface. To maximize sulfide production and cadmium precipitation, the production of cysteine desulfhydrase was modulated to achieve an optimal balance between the production and degradation of cysteine.  (+info)

Structure and dynamics of hnRNP-labelled nuclear bodies induced by stress treatments. (6/228)

We have previously described HAP, a novel hnRNP protein that is identical both to SAF-B, a component of the nuclear scaffold, and to HET, a transcriptional regulator of the gene for heat shock protein 27. After heat shock, HAP is recruited to a few nuclear bodies. Here we report the characterisation of these bodies, which are distinct from other nuclear components such as coiled bodies and speckles. The formation of HAP bodies is part of a general cell response to stress agents, such as heat shock and cadmium sulfate, which also affect the distribution of hnRNP protein M. Electron microscopy demonstrates that in untreated cells, similar to other hnRNP proteins, HAP is associated to perichromatin fibrils. Instead, in heat shocked cells the protein is preferentially associated to clusters of perichromatin granules, which correspond to the HAP bodies observed in confocal microscopy. Inside such clusters, perichromatin granules eventually merge into a highly packaged 'core'. HAP and hnRNP M mark different districts of these structures. HAP is associated to perichromatin granules surrounding the core, while hnRNP M is mostly detected within the core. BrU incorporation experiments demonstrate that no transcription occurs within the stress-induced clusters of perichromatin granules, which are depots for RNAs synthesised both before and after heat shock.  (+info)

The NADPH oxidase inhibitors iodonium diphenyl and cadmium sulphate inhibit hypoxic pulmonary vasoconstriction in isolated rat pulmonary arteries. (7/228)

Interest surrounds the role of an NADPH oxidase-like enzyme in hypoxic pulmonary vasoconstriction (HPV). We have studied the effects of the NADPH oxidase inhibitors iodonium diphenyl (ID) and cadmium sulphate (CdSO4) upon HPV of isolated rat pulmonary arteries (n = 73, internal diameter 545 +/- 23 microm). Vessels were preconstricted with prostaglandin F2alpha (PGF2alpha, 0.5 or 5 microM) prior to a hypoxic challenge. ID (10 or 50 microM), CdSO4 (100 microM) or vehicle (50 microl) was added for 30 min before re-exposure to PGF2alpha and hypoxia. ID and CdSO4 significantly inhibited HPV. In vessels preconstricted with 5 microM PGF2alpha, ID (10 and 50 microM) reduced HPV from 37.4 +/- 5.6 % to 9.67 +/- 4.4 % of the contractile response elicited by 80 mM KCl (P<0.05) and from 30.1 +/- 5.0 % to 0.63 +/- 0.6% 80 mM KCl response (P<0.01), respectively. CdSO4 (100 microM) reduced HPV from 29.4 +/-4.0 % to 17.1 +/- 2.2% 80 mM KCl response (P<0.05). In vessels preconstricted with 0.5 microM PGF2alpha, ID (10 and 50 microM) reduced HPV from 16.0 +/- 3.15% to 3.36 +/- 1.44 % 80 mM KCl response (P<0.01) and from 15.0 +/- 1.67 % to 2.82 +/- 1.40 % 80 mM KCl response (P<0.001), respectively. Constriction to PGF2alpha was potentiated by ID. ID and CdSO4, at concentrations previously shown to inhibit neutrophil NADPH oxidase, attenuate HPV in isolated rat pulmonary arteries. This suggests that an NADPH oxidase-like enzyme is involved in HPV and could act as the pulmonary oxygen sensor.  (+info)

Colloidal nanocrystal shape and size control: the case of cobalt. (8/228)

We show that a relatively simple approach for controlling the colloidal synthesis of anisotropic cadmium selenide semiconductor nanorods can be extended to the size-controlled preparation of magnetic cobalt nanorods as well as spherically shaped nanocrystals. This approach helps define a minimum feature set needed to separately control the sizes and shapes of nanocrystals. The resulting cobalt nanocrystals produce interesting two- and three-dimensional superstructures, including ribbons of nanorods.  (+info)

Methods are generally provided of sputtering a cadmium sulfide layer on a substrate. The cadmium sulfide layer can be sputtered on a substrate from a target in a sputtering atmosphere, wherein the target comprises about 75% to about 100% by weight cadmium, and wherein the sputtering atmosphere comprises a sulfur-containing source gas. The cadmium sulfide layer can be used in methods of forming cadmium telluride thin film photovoltaic devices.
The CdSe quantum dots (QDs) with bidentate ligands: a-diimine (NN) and dihydrolipoic acid (DHLA) were synthesized and characterized by UV-Vis, particle size and capillary electrophoretic techniques. Two systems were analyzed: CdSe with one ligand (CdSe/ligand) and CdSe with two different ligands (CdSe//ligand1/ligand2), where ligand = α-diimine or DHLA. Hydrodynamic features of functionalized QDs were characterized by zone capillary electrophoretic (CZE), and particle size techniques and these methods were consistent. It was established that CZE, micellar (MEKC) and microemulsion (MEEKC) modes were suitable for separating charged CdSe QDs and that no peaks were obtained for QDs passivated with electrically neutral ligands. For CdSe QDs with neutral (NN) ligands, a preconcentration method with the use of a micellar plug was introduced for visualizing these QDs. A sharp peak representing neutral QDs was obtained within the zone of micellar plug of a non-ionic surfactant, Here, a ligand character ...
Cadmium Sulphide (CdS) nanoparticles were prepared using microemulsion method using cadmium chloride as cadmium source and sodium sulphide as sulphur source. The obtained nanoparticles structures were characterized by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) whereas optical characterization was done by Ultra Violet-Visible absorption. XRD result shows that CdS nanoparticles of hexagonal phase are formed. The TEM result indicates that the synthesized CdS nanoparticles are of variable morphology like spherical, cylindrical, nanorods and nanoneedles. Histograms help to evaluate size and aspect ratio of nanoparticles. UV-Visible spectroscopy reveals that as prepared CdS nanoparticles show a quantum confinement effect with shift in band gap. It is also found that water to surfactant molar ratio (wo) and co-surfactant are vital factors in the morphology and optical properties of CdS nanoparticles.
TY - JOUR. T1 - Synthesis of TiO2/CdS nanocomposite via TiO2 coating on CdS nanoparticles by compartmentalized hydrolysis of Ti alkoxide. AU - Fujii, H.. AU - Inata, K.. AU - Ohtaki, Michitaka. AU - Eguchi, K.. AU - Arai, H.. PY - 2001/1/1. Y1 - 2001/1/1. N2 - Hydrolysis of Ti alkoxide in the presence of inverse micelles containing CdS nanoparticles in their hydrophilic interior results in formation of TiO2/CdS nanocomposites in which the CdS nanoparticles are embedded in a TiO2 matrix with a thickness of ≤10 nm at the surface of the particles. The primary hydroxyl groups introduced by 2-mercaptoethanol as a capping agent used for preparation of the CdS nanoparticles are considered to play an important role for successful adhesion and growth of the TiO2 layer on the CdS surfaces. TEM observation strongly supports formation of semiconductor-in-semiconductor heteronanostructure by compartmentalized hydrolysis of Ti alkoxide within the inverse micelles in which the surface-capped CdS ...
We have synthesized and characterized CdS nanoparticles incorporated into the voids of opal crystal. This is the first time of AFM observation of pure and CdS doped opal crystal. It is shown, the size of CdS nanoparticle, which getting from AFM observation of CdS doped opal, is varied 70-90 nm. It is the contradiction of the results of Raman spectra of the CdS-opal sample, from what the frequency vibrations of this sample are corresponded to the size of the Cds nanoparticles 10-30 nm. The additional experiment - the high resolution SEM observation had shown - the size of CdS nanoparticles is 10-30 nm. By analysis of this results, we consider during the AFM scanning the tip removes some part of the CdS (may be some boundary between CdS nanoparticles with 10-30 nm sizes). It is well-known sweeping process. It has proposed, during the AFM tip scanning of the CdS-opal surface, that the measurement of the bonding force from the force cuver, can give us the order of the bonding force of some units ...
Creative Diagnostics provides DiagNano™ CdSe Quantum Dots, 600 nm for immunoassay, bioseparation and medical imaging applications.
Organic-inorganic hybrid perovskites have recently attracted considerable interest for application in solar cells due to their low cost, high absorption coefficient and high power conversion efficiency (PCE). Herein, we utilize a CdSe quantum dot/PCBM composite as an electron transport layer (ETL) to investi
Page contains details about CdSe quantum dots . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Page contains details about ZnO-graphene core-shell quantum dots film on FTO glass . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Potential routes of nanomaterial exposure include inhalation, dermal contact, and ingestion. Toxicology of inhalation of ultra-fine particles has been extensively studied; however, risks of nanomaterial exposure via ingestion are currently almost unknown. Using enterocyte-like Caco-2 cells as a small intestine epithelial model, the possible toxicity of CdSe quantum dot (QD) exposure via ingestion was investigated. Effect of simulated gastric fluid treatment on CdSe QD cytotoxicity was also studied. Commercially available CdSe QDs, which have a ZnS shell and poly-ethylene glycol (PEG) coating, and in-house prepared surfactant coated CdSe QDs were dosed to Caco-2 cells. Cell viability and attachment were studied after 24 hours of incubation. It was found that cytotoxicity of CdSe QDs was modulated by surface coating, as PEG coated CdSe QDs had less of an effect on Caco-2 cell viability and attachment. Acid treatment increased the toxicity of PEG coated QDs, most likely due to damage or removal of the
In this work, CdS/TiO2 nanotubes composite nanofilms were successfully synthesized via electrodeposition technique. TiO2 titania nanotube arrays (NTAs) are commonly used in photoelectrochemical cells as the photoelectrode due to their high surface area, excellent charge transfer between interfaces and fewer interfacial grain boundaries. The anodization technique of titanium foil was used to prepare TiO2 NTAs photoelectrode. The concentration of CdCl2 played an important role in the formation of CdS nanoparticles. Field emission scanning electron microscopy (FESEM) shows that the CdS nanoparticles were well deposited onto the outer and inner of nanotube at 40 mM of CdCl2. X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analyses were executed for the determination of the composition and crystalline structure of the synthesized samples. Furthermore, the data of EDX confirms the formation of titanium and oxygen for TiO2 nanotubes and cadmium and sulfide for CdS deposits. UV-visible diffuse ...
In order to detect low level glucose concentration, an electrochemiluminescence (ECL) biosensor based on TGA-capped CdSe quantum dots (QDs) was fabricated by the immobilization of CdSe QDs after modifying the surface of a glassy carbon electrode (GCE) with 4-aminothiophenol diazonium salts by the electrochemical method. For the detection of glucose concentration,|i| glucose oxidase|/i| (GOD) was immobilized onto the fabricated CdSe QDs-modified electrode. The fabricated ECL biosensor based on TGA-capped CdSe QDs was characterized using a scanning electron microscope (SEM), UV-vis spectrophotometry, transmission electron microscopy (TEM), a fluorescence spectrometer (PL), and cyclic voltammetry (CV). The fabricated ECL biosensor based on TGA-capped CdSe QDs is suitable for the detection of glucose concentrations in real human blood samples.
Cadmium Sulfide is a medicine available in a number of countries worldwide. A list of US medications equivalent to Cadmium Sulfide is available on the Drugs.com website.
Since cadmium compounds are often found in association with zinc ores, cadmium oxide is a common by-product of zinc refining.[15] It is produced by burning elemental cadmium in air. Pyrolysis of other cadmium compounds, such as the nitrate or the carbonate, also affords this oxide. When pure, it is red, but CdO is unusual in being available in many differing colours due to its tendency to form defect structures resulting from anion vacancies.[16] Cadmium oxide is prepared commercially by oxidizing cadmium vapor in air.[17] ...
|p|We first focus on the kinetics of nanoparticle growth in a microemulsion synthesis of CdSe semiconductor nanocrystals. The process consists of a fast initial stage of typical time constant of the order of 103 s followed by a slow stage of time constant of the order of 104s. Growth proceeds similarly to that described for the hot-matrix synthesis of CdSe, underlining the generality of the two-stage growth mechanism, irrespective of the matrix type and synthesis conditions. However, the time constant of each stage in the microemulsion synthesis is much larger than in the hot-matrix one. Also, the ratio between the fast and slow time constant is appreciably bigger. We also prove that larger size reverse micelles, obtained by increasing the water:surfactant ratio, generally lead to larger CdSe nanoparticles. Bis(trimethylsilyl) selenium is the crucial precursor for the CdSe nanoparticle synthesis. An intermediate stage of the chemical reaction limiting the bis(trimethylsilyl)
The structure of the amino modified CdSe/ZnS core-shell QD (a) and the size distribution of the QDs (b) in the aqueous environment of living cells. The averaged
The unique characteristics of engineered nanomaterials have received enormous attention for their potential applications in biology and medicine. Quantum dots (QDs), in particular, with their bright, photostable and size tunable fluorescence have shown great promise as alternatives to organic dyes for biological imaging. A key issue in evaluating their utility is assessing their potential toxicity, which however is not fully understood. In order to address problems associated with QDs manufacturing and to assess their immunotoxicity, we evaluated recently synthesized CdSe/ZnS core/shell QDs with a tri-n-octylphosphine oxide, poly(maleic anhydride-alt-1-tetradecene) (TOPO-PMAT) coating. In this study, we investigated the potential pro-inflammatory response that these nanoparticles might elicit and the signaling pathways that regulate such events. We measured the gene expression of pro-inflammatory cytokines/chemokines in mouse macrophages. The mRNA transcription of a list of pro-inflammatory ...
Fluorescent labeling reagents are used as diagnosis and research reagents that label specific protein, antigen, antibody, and DNA. However, the chromophoric groups are not stable under long-time Ultra Violet (UV) excitation measurement condition. Nanometer-sized semiconductor particles (for example, CdS or CdSe nanometer-sized particles) provide high intensity fluorescence with durability under long-time UV irradiation. However, the CdSe particles are usually insoluble to water. We prepared terpolymers which consist of water-soluble and hydrophobic parts, and functional group for antibody binding site. Water-soluble part in the polymers is composed of N-isopropylacrylamide. Hydrophobic part for anchoring to CdSe nanoparticles coated with hydrophobic stabilizing reagents and oleic acid is prepared by copolymerization of oleic acid (Ole) as a monomer. The terpolymers were prepared by radical polymerization of Nipam, Ole, and acrylic acid and their structures were confirmed by IR and NMR spectroscopic
Cation exchange occurs via defect initiated solid-state diffusion, a process that can lead to defect formations. The effect of such inherent defect formation on carrier dynamics of cation-exchanged heterostructures remains poorly understood. Herein, we report exciton dynamics in type II CdSe/PbSe heterostructure nanorods formed via cation exchange. The majority of electrons in CdSe domains decays in 5 ps due to ultrafast carrier trapping. The defect generated by cation exchange can be healed by annealing the as-synthesized CdSe/PbSe heterostructure nanorods. This study suggests a strategy for improving properties of heteronanostructures prepared by cation exchange for applications in photovoltaics and photocatalysis ...
A method for preparing CdS nanoparticles within the porous confines of a mesoporous starch gel is described. This method utilises the combined colloidal and flexible chemical nature of a porous polysaccharide (i.e. starch) gel to limit CdS growth. The resulting hybrid gels can be dried to produce CdS/starch materials with high surface areas, predominantly mesoporous characteristics and scope for high CdS loading. The synthesis is conducted in aqueous alcoholic solutions without the need for expensive preparation techniques or additional protection/templating strategies. Materials were prepared at increasing CdS loadings on the starch gel, which confined nanoparticle growth and directed size/surface coverage, dispersion and UV-vis absorption profile. The resulting powders presented large mesopore domains with high volumes (pore diameters,10nm; Vmeso,0.5cm3g-1) and surface areas (SBET,170m2g-1), interestingly effectively increasing with CdS loading. The synthesised CdS nanoparticles were ...
Our initial goal was to clone the nucleotide sequences of three small peptides, A7 (N-SLTPLTTSHLRS-C), Z8 (N-VISNHAESSRRL-C), and J140 ((N-TGCAACAACCCGATGCACCAGAACTGC-C) ,which have been previously reported in Mao, et. al. to nucleate zinc sulfide (A7 and Z8 peptides) and cadmium sulfide (J140 peptide) to form quantum dot containing nano-wires using phage display.. Since all of the QD nucleating peptides were small sequences of 70 base pairs or less, we opted to generate the inserts using an oligonucleotide annealing procedure (see protocols) using designed oligos ordered from IDT. These were to be then cloned into the BioBrick vector PSB13C. Also, the sequence of the small peptide CDS7 (N-GDVHHHGRHGAEHADI-C), which previously demonstrated by Mi, et. al. to nucleate the formation of cadmium sulfide containing QDs, was synthesized by Invitrogen in a pANY vector and then amplified from the construct using primers containing either Biobrick ends conforming to RFC23 Silver lab standard or BamHI and ...
Our initial goal was to clone the nucleotide sequences of three small peptides, A7 (N-SLTPLTTSHLRS-C), Z8 (N-VISNHAESSRRL-C), and J140 ((N-TGCAACAACCCGATGCACCAGAACTGC-C) ,which have been previously reported in Mao, et. al. to nucleate zinc sulfide (A7 and Z8 peptides) and cadmium sulfide (J140 peptide) to form quantum dot containing nano-wires using phage display.. Since all of the QD nucleating peptides were small sequences of 70 base pairs or less, we opted to generate the inserts using an oligonucleotide annealing procedure (see protocols) using designed oligos ordered from IDT. These were to be then cloned into the BioBrick vector PSB13C. Also, the sequence of the small peptide CDS7 (N-GDVHHHGRHGAEHADI-C), which previously demonstrated by Mi, et. al. to nucleate the formation of cadmium sulfide containing QDs, was synthesized by Invitrogen in a pANY vector and then amplified from the construct using primers containing either Biobrick ends conforming to RFC23 Silver lab standard or BamHI and ...
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Zusammenfassung CdS-Nanoteilchen mit Größen zwischen 1.1 und 4.2 nm wurden in Äthanol und mit Thioglycerol (TG)-Hülle synthetisiert. Es wurde gezeigt, dass die nass-chemische Synthese ohne Wasser und die Verwendung von TG als Hülle folgende Vorteile bieten: Es konnten kleinere Teilchen hergestellt und eine schmalere Größenverteilung erzielt werden. Zusätzlich wird dem Altern der Teilchen vorgebeugt, und die Ergebnisse sind besser reproduzierbar. Hochaufgelöste Photoemissions-Messungen an kleinen CdS-Teilchen (1.1, 1.4, 1.7, 1.8; 1.8 nm mit Glutathion-Hülle) ergaben Beiträge von fünf verschiedenen Schwefelatom-Typen zum S 2p-Gesamt Signal. Außerdem wurde beobachtet, dass Nanoteilchen unterschiedlicher Größe und/oder mit unterschiedlichen Hüllen-Substanzen verschiedene Photoemissionsspektren zeigen und verschieden starke Strahlenschäden aufweisen. Bei den 1.4 nm großen CdS-Teilchen entsprechen die Komponenten des S 2p-Signals entweder Schwefelatomen mit unterschiedlichen Cd-Nachbarn,
This database contains the ADNs Dangerous Goods List, as implemented by the EUs Directive 2008/68/EC. This Directive establishes rules for the safe transport of dangerous goods between EU countries by road, rail, and waterway. It applies the European Agreements on the international transport of dangerous goods by road (ADR) and inland waterways (ADN), and the Regulations concerning the international carriage of dangerous goods by rail (RID).. ...
Distribution of Selected Radiochemical and Chemical Constituents in Perched Ground Water, etc., U.S. Geological Survey, Water-Resources Investigations Report 00-4222, October ...
This database contains the ADNs Dangerous Goods List, as implemented by the EUs Directive 2008/68/EC. This Directive establishes rules for the safe transport of dangerous goods between EU countries by road, rail, and waterway. It applies the European Agreements on the international transport of dangerous goods by road (ADR) and inland waterways (ADN), and the Regulations concerning the international carriage of dangerous goods by rail (RID).. ...
Here you can find all of the regulations and regulatory lists in which this substance appears, according to the data available to ECHA. This substance has been found in the following regulatory activities (directly, or inheriting the regulatory context of a parent substance):. ...
Characterization of nanocrystals is crucial for the development of many chemical methods based on this technology. For this, there are several techniques, mainly microscopic, and recently capillary electrophoretic techniques, that have been proposed. In our laboratory, we examined several capillary electrophoretic methodologies: zone (CZE), micellar (MEKC), microemulsion (MEEKC), non-aqueous (NACE) and polymer based (CGE). For the separation of water soluble CdSe nanocrystals, CZE, MEKC and CGE were found to be suitable
read faserverbundwerkstoffe 1986 RAMAN STUDIES OF GROUND AND ELECTRONIC EXCITED STATES IN CdS NANOCRYSTALS, J. Alivisatos, Journal of Chemical Physics 98:8432. tendency AND vibrational PROPERTIES OF GaAs NANOCLUSTERS SEQUESTERED IN AMORPHOUS MATRICES, S. Underwood, Journal of Materials Synthesis and Processing 1:225. Risbud, Journal of Materials Research 8:1394.
Artists rendering of bioreactor (left) loaded with bacteria decorated with cadmium sulfide, light-absorbing nanocrystals (middle) to convert light, water and carbon dioxide into useful chemicals (right).
Dr. Belchers team uses the virus as a temporary scaffolding on which the crystals grow. The viruses are first altered by the insertion of a few amino acid chains, called peptides, so that they attract a particular material like zinc sulfide or cadmium sulfide. It is all a matter of affinity, molecular recognition and genetic programming, Dr. Belcher said. We programmed the virus to grow a particular material at a particular length, she said. Then we burned off the virus and were left with single-crystal semiconductor wires ...
Science communication can be defined as any practice that proposes to spread the science to the public, with the purpose of arousing interest and motivation in science, as well as informing and disseminating scientific ...
Zn chalcogenides are suitable candidates for blue-emitting fluorophores in light-emitting devices. In particular, the efforts to grow ZnSe nanocrystals (NCs) with fine control over size and shape via bottom-up approaches have faced challenges because of the slow decomposition of Zn precursors. In this study, 2019 Nanoscale HOT Article Collection
Combined Defence Services Examination(CDSE) is conducted by Union public Service commission (UPSC) . UPSC conducts two exam yearly. The CDS I exam will be held in the month of February and the CDS II will be held in AUG. CDSE exam consist of three parts namely General knowledge, English and Elementary mathematics. The questions are all objective type question and each paper will be give 2 hour for the exam. There is negative marking in this exam. Through this exam on can join the three armed forces (Army, Navy and Air-force). Two entry is possible with CDSE - IMA and OTA. For IMA one has write all the 3 papers , whereas for OTA only GK and English paper is enough ...
Lasing in submonolayer CdSe structures in a ZnSe matrix without external optical confinement. Krestnikov, I. L.; Ledentsov, N. N.; Maksimov, M. V.; Sakharov, A. V.; Ivanov, S. V.; Sorokin, S. V.; Tenishev, L. N.; Kop�ev, P. S.; Alferov, Zh. I. // Technical Physics Letters;Jan97, Vol. 23 Issue 1, p23 It is shown that in order to achieve lasing in structures with CdSe submonolayers inserted in a ZnSe matrix, no additional optical confinement of the active region using thick wide-gap layers is required. The high oscillator strength of the excitons trapped at CdSe islands modulates the... ...
Trilite™ Fluorescent Nanocrystals 490nm - Amine (Fluorescent Nanocrystals). 25mg 490nm emitting fluorescent nanocrystals with amine (NH2) functional surface.
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Looking for cadmium telluride detector? Find out information about cadmium telluride detector. A photoconductive cell capable of operating continuously at ambient temperatures up to 750°F ; used in solar cells and infrared, nuclear-radiation, and... Explanation of cadmium telluride detector
Doping quantum dots to increase conductivity is a crucial step towards being able to fabricate a new generation of electronic devices built on the bottom-up platform that are smaller and more efficient than currently available. Indium, tin, and gallium have been used to dope CdSe in both the bulk and thin film regimes and introduce n-type electron donation to the conduction band. CdSe quantum dots have been successfully doped with indium, tin, and gallium using the Li4[Cd10Se4(SPh16)] single source precursor combined with metal chloride compounds. Doping CdSe quantum dots is shown to effect particle growth dynamics in the heterogeneous growth regime. Doping with indium, tin, and gallium introduce donor levels 280, 100, and 50 meV below the conduction band minimum, respectively. Thin films of indium and tin doped quantum dots show improved conductivity over films of undoped quantum dots. Transient Absorption spectroscopy indicates that indium doping introduces a new electron energy level in ...
In the last two decades, semiconductor quantum dots small colloidal nanoparticles have garnered a great deal of scientific interest because of their unique properties. Among nanomaterials, CdTe holds special technological importance as the only known II-VI material that can form conventional p-n junctions. This makes CdTe very important for the development of novel optoelectronic devices such as light-emitting diodes, solar cells, and lasers. Moreover, the demand for water-compatible light emitters and the most common biological buffers give CdTe quantum dots fields a veritable edge in biolabeling and bioimaging.
In this work, a novel three-dimensional cadmium telluride quantum dots-DNA nanoreticulation (3D CdTe QDs-DNA-NR) was used as a signal probe with the dual-legged DNA walker circular amplification as target conversion strategy to establish a pioneering electrochemiluminescence (ECL) biosensing strategy for ultrasensitive detection of microRNA-21 form cancer cells. Herein, such a
TY - JOUR. T1 - Energy transfer effect of hybrid organic rubrene nanorod with CdSe/ZnS quantum dots. T2 - Application to optical waveguiding modulators. AU - Moon, Woo Sung. AU - Cho, Eun Hei. AU - Lee, Ju Bok. AU - Jeon, Sumin. AU - Kim, Jeongyong. AU - Lee, Kwang Sup. AU - Joo, Jinsoo. PY - 2014/1/1. Y1 - 2014/1/1. N2 - Organic rubrene (5,6,11,12-tetraphenyltetracene) nanorods (NRs) were fabricated through the physical vapor transport method for the study of active fluorescence optical waveguiding and its modulation. The functionalized CdSe/ZnS quantum dots (QDs) with blue and green emissions were partially attached to the surface of the rubrene NR. Using a high resolution laser confocal microscope (LCM), the nanoscale photoluminescence (PL) intensity of the pristine rubrene portion of the hybrid NR/QDs was observed to be considerably enhanced after it was attached with blue (or green) QDs. The nanoscale optical waveguiding characteristics of the hybrid NR/QDs were investigated in terms of the ...
In optoelectronic devices based on quantum dot arrays, thin nanolayers of gold are preferred as stable metal contacts and for connecting recombination centers. The optimal morphology requirements are uniform arrays with precisely controlled positions and sizes over a large area with long range ordering since this strongly affects device performance. To understand the development of gold layer nanomorphology, the detailed mechanism of structure formation are probed with time-resolved grazing incidence small-angle X-ray scattering (GISAXS) during gold sputter deposition. Gold is sputtered on a CdSe quantum dot array with a characteristic quantum dot spacing of approximate to 7 nm. In the initial stages of gold nanostructure growth, a preferential deposition of gold on top of quantum dots occurs. Thus, the quantum dots act as nucleation sites for gold growth. In later stages, the gold nanoparticles surrounding the quantum dots undergo a coarsening to form a complete layer comprised of gold-dot ...
Article Photoinduced toxicity of CdSe/ZnS quantum dots with different surface coatings to Escherichia coli. Quantum dot (QD) nanoparticles are increasingly used for various biomedical applications. To increase their biocompatibility, QDs are frequent...
a) Cadmium telluride (CdTe) is a semiconductor witha band gap, Eg, of 1.45 eV. Calculate the value of the absorption edge of this material. Express your answer in meters. (b) Shown below are several % absorption vs. wavelength diagrams ...
Photoluminescence (PL) and Raman scattering spectra of none- and bio-conjugated CdSe/ZnS and CdSeTe/ZnS quantum dots (QDs) have been studied.
The present study reports the localization and interaction of thioglycolic acid (TGA) capped CdTe quantum dots ([email protected] QDs) within the extracellular matrix (ECM) of Haematococcus pluvialis (Chlorophyceae) microalgae (HPM) after an incubation period of 5 min. Changes in the Raman spectrum of HPM induced by the adsorption of the [email protected] QDs are successfully found by using naked gold anisotropic structures as nano-sensors for surface-enhanced Raman scattering (SERS effect). Raman spectroscopy results show that [email protected] QDs interact with the biomolecules present in the ECM. Sample preparation and characterization by complementary techniques such as confocal and electron microscopy are also used to confirm the presence and localization of the nanoparticles in the algae. This research shows new evidence on early accumulation of QDs in plant cells and would further improve our understanding about their environmental impact.. © 2016 The Author(s). PDF Article ...
The objective of my research work is to synthesize, characterize, design, and apply nanocrystals for biomedical use.; Gold nanoparticles were synthesized in the presence of chitosan via reduction of HAuCl4 with sodium borohydride. The average particle size of gold nanoparticles was significantly affected with the concentration of chitosan added and was ranged between 5 and 30 nm. The gold-chitosan nanocomposites were formed by adsorbing chitosan molecules on the gold nanoparticles.; CdSe/ZnS quantum dots were prepared by a solution phase synthetic method. A new route for the phase transfer of CdSe/ZnS quantum dots from non-polar solvents into aqueous solution was developed using hydrophobically modified polysaccharides, both chitosan and alginate. In addition, it was shown that CdSe/ZnS based polysaccharide nanoparticles effectively inhibited the proliferation of human ovarian cancer cell line SKOV-3 in vitro. The findings suggest that CdSe/ZnS quantum dot based polysaccharide nanoparticles not ...
Los Angeles, CA (PRWEB) May 28, 2008 -- Los Angeles-based American Elements announced the further expansion of its cadmium telluride production facilities to
Cadmium Telluride Quantum Dots CdTe bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts & credit cards/PayPal accepted.
Optical techniques targeting biomarkers of cancer have the potential to aid in the early detection of this disease. Molecular and biochemical changes in neoplastic tissue could be interrogated, potentially providing an objective assessment and identification of suspect tissue. A method of interrogating such changes involves the development of optical based probes that provide a molecular-specific source of signal. This dissertation aims to develop an effective optical strategy to target the epidermal growth factor for in vivo detection. The optical probe design consists of an optically active component (quantum dot, fluorescent dye) and a molecular specific probe (antibody, peptide). The optically active components investigated were cadmium telluride quantum dots (QDs) and Alexa Fluor 647 dye. Epidermal growth factor receptor (EGFR) was chosen as a molecular target because it is over-expressed in a large number of epithelial cancers. Both peptides and antibody to EGFr were investigated as ...
As a multipotent tool for scientific exploration, semiconductor nanoparticles, or quantum dots (QDs), have gained enormous interest in nanoscience in the past two decades. The research presented here focused on cadmium telluride (CdTe) QDs: novel synthetic methodologies were used to prepare previously inaccessible nanomaterials based on CdTe QDs. -- CdTe/CdSe/ZnSe core/shell/shell QDs were prepared by a one-pot synthesis. The resulting QDs exhibited near infrared emission, were readily dispersed in aqueous media and applied to deep tissue imaging where emission through the skin indicated the gradual transition of the QDs via the lymphatic tract. -- Using a different synthetic approach, CdTe QDs, which were dispersed in organic media, were exposed to mercury cations in a toluene/methanol solution, resulting in CdHgTe nanoalloy formation. The optical characteristics of the resulting materials were substantially red-shifted from those of the original CdTe QDs. Structural changes were also examined ...
The organic layer of the CdS/ZnS or CdSe/ZnS quantum dots (QDs) with carboxylic acid as reactive group consist of a monolayer of oleic acid/octadecylamine and a monolayer of amphiphilic polymer. The total thickness of organic layers on these QDs is approximately 4 nm. They find many applications in bioimaging and biosensing... ...
Over the last decade, cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) wide band gap semiconductors have attracted increasing interest as X-ray and gamma ray detectors. Among the traditional high performance spectrometers based on silicon (Si) and germanium (Ge), CdTe and CdZnTe detectors show high detection efficiency and good room temperature performance and are well suited for the development of compact and reliable detection systems. In this paper, we review the current status of research in the development of CdTe and CdZnTe detectors by a comprehensive survey on the material properties, the device characteristics, the different techniques for improving the overall detector performance and some major applications. Astrophysical and medical applications are discussed, pointing out the ongoing Italian research activities on the development of these detectors.
Ga-doped CdTe polycrystalline thin films were successfully electrodeposited on glass/fluorine doped tin oxide (FTO) substrates from aqueous electrolytes containing cadmium nitrate (Cd(NO3)2⸱4H2O) and tellurium oxide (TeO2). The effects of different Ga-doping concentrations on the CdTe:Ga coupled with different post-growth treatments were studied by analysing the structural, optical, morphological and electronic properties of the deposited layers using X-ray diffraction (XRD), ultraviolet-visible spectrophotometry, scanning electron microscopy, photoelectrochemical cell measurement and direct-current conductivity test respectively. XRD results show diminishing (111)C CdTe peak above 20 ppm Ga-doping and appearance of (301)M GaTe diffraction above 50 ppm Ga-doping indicating the formation of two phases; CdTe and GaTe . Although, reductions in the absorption edge slopes were observed above 20 ppm Ga-doping for the as-deposited CdTe:Ga layer, no obvious influence on the energy gap of CdTe films ...
A semiconductor nanocrystal compound and probe are described. The compound is capable of linking to one or more affinity molecules. The compound comprises (1) one or more semiconductor nanocrystals capable of, in response to exposure to a first energy, providing a second energy, and (2) one or more linking agents, having a first portion linked to the one or more semiconductor nanocrystals and a second portion capable of linking to one or more affinity molecules. One or more semiconductor nanocrystal compounds are linked to one or more affinity molecules to form a semiconductor nanocrystal probe capable of bonding with one or more detectable substances in a material being analyzed, and capable of, in response to exposure to a first energy, providing a second energy. Also described are processes for respectively: making the semiconductor nanocrystal compound; making the semiconductor nanocrystal probe; and treating materials with the probe.
A semiconductor nanocrystal compound and probe are described. The compound is capable of linking to one or more affinity molecules. The compound comprises (1) one or more semiconductor nanocrystals capable of, in response to exposure to a first energy, providing a second energy, and (2) one or more linking agents, having a first portion linked to the one or more semiconductor nanocrystals and a second portion capable of linking to one or more affinity molecules. One or more semiconductor nanocrystal compounds are linked to one or more affinity molecules to form a semiconductor nanocrystal probe capable of bonding with one or more detectable substances in a material being analyzed, and capable of, in response to exposure to a first energy, providing a second energy. Also described are processes for respectively: making the semiconductor nanocrystal compound; making the semiconductor nanocrystal probe; and treating materials with the probe.
ZnS and CdS nanoparticles were prepared by a simple microwave irradiation method under mild conditions. The obtained nanoparticles were characterized by XRD, TEM and EDX. The results indicated that high purity of nanosized ZnS and CdS was successfully obtained with cubic and hexagonal crystalline structures, respectively. The band gap energies of ZnS and CdS nanoparticles were estimated using UV-visible absorption spectra to be about 4.22 and 2.64 eV, respectively. Photocatalytic degradation of methylene blue was carried out using physical mixtures of ZnS and CdS nanoparticles under a 500-W halogen lamp of visible light irradiation. The residual concentration of methylene blue solution was monitored using UV-visible absorption spectrometry. From the study of the variation in composition of ZnS:CdS, a composition of 1:4 (by weight) was found to be very efficient for degradation of methylene blue. In this case the degradation efficiency of the photocatalyst nanoparticles after 6 h irradiation time was
The oxidative coupling of sp3 hybridized carbon atoms by photocatalysis is a valuable synthetic method as stoichiometric oxidation reagents can be avoided and dihydrogen is the only byproduct of the reaction. Cadmium sulfide, a readily available semiconductor, was used as a visible light heterogeneous photocatalyst for the oxidative coupling of benzyl alcohols and benzyl amines by irradiation with blue light. Depending on the structure of the starting material, good to excellent yields of homocoupling products were obtained as mixtures of diastereomers. Cross-coupling between benzyl alcohols and benzyl amines gave product mixtures, but was selective for the coupling of tetrahydroisoquinolines to nitromethane. The results demonstrate that CdS is a suitable visible light photocatalyst for oxidative bond formation under anaerobic conditions. ...
With the development of science and technology, new applications about nanoparticles should be explored to achieve full-scale knowledge. Therefore, in this work, the toxicity and potential application of raw cadmium sulfide nanoparticles (CdS) in vivo were further studied through ICP-OES and CTs. Surprisingly, CdS exhibited an excellent photographic property, except for finding the accumulation of CdS in the lungs, liver, spleen, and kidney with a strong dependence on time; it is also found that there were a significant uptake in the pancreas for an obvious CT imaging. And the following investigations showed that the raw CdS could damage the tissues accumulating nanoparticles. Through this work, it can be seen that the raw CdS being modified might be an excellent photographic developer for detecting cancers or other diseases.
TY - JOUR. T1 - Methotrexate-conjugated AgInS2/ZnS quantum dots for optical imaging and drug delivery. AU - Wu, Pei Jung. AU - Ou, Keng Liang. AU - Chen, Jem Kun. AU - Fang, Hsiao Ping. AU - Tzing, Shin Hwa. AU - Lin, Wei Xiang. AU - Chang, Jia Yaw. PY - 2014/8/1. Y1 - 2014/8/1. N2 - The ability to conjugate drugs with quantum dots (QDs) offers excellent prospects in pharmacotherapy for the improvement of diagnosis and treatment of human diseases. Here, we report a facile strategy to prepare dual-functional nanomaterials consisting of QDs and an anticancer drug. Hydrophilic AgInS 2/ZnS QDs were obtained through an ultrasonication process by introducing the amphiphilic polymer, poly(maleic anhydride-alt-1-octadecene) (PMAO). Subsequently, the anticancer drug methotrexate (MTX) was covalently coupled to the surface of the AgInS2/ZnS QDs by carbodiimide chemistry. The MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] cell proliferation assay indicated that these hydrophilic ...
Cadmium selenide is a semi-conductor with interesting optical and photoconductive pro-perties in the red part of the spectrum. This paper is concerned mainly with the measure-ment of a number of the optical properties of cadmium selenide in which pure single crystals grown by sublimation in atmospheres of inert gas were used. Thin plates of CdSe less than 1 μ thick were obtained, and these are transparent right down to short wavelengths in the region of 4500Å. At liquid-helium temperatures, sharp absorption bands may be observed in the visible part of the spectrum, both in the red part near the absorption edge, and in the green part. From the position of these bands and the shape of the absorption curves, in- formation has been obtained concerning the band structure. Two levels occur near the top of the valence band with a small energy separation (ca. 0.026eV) and these are connected with crystal field splitting. The energy separation of the deeper levels is ca. 0.41 eV and these levels are ...
TY - JOUR. T1 - Metal-insulator transition in films of doped semiconductor nanocrystals. AU - Chen, Ting. AU - Reich, K. V.. AU - Kramer, Nicolaas J.. AU - Fu, Han. AU - Kortshagen, Uwe R.. AU - Shklovskii, B. I.. PY - 2016/3/1. Y1 - 2016/3/1. N2 - To fully deploy the potential of semiconductor nanocrystal films as low-cost electronic materials, a better understanding of the amount of dopants required to make their conductivity metallic is needed. In bulk semiconductors, the critical concentration of electrons at the metal-insulator transition is described by the Mott criterion. Here, we theoretically derive the critical concentration nc for films of heavily doped nanocrystals devoid of ligands at their surface and in direct contact with each other. In the accompanying experiments, we investigate the conduction mechanism in films of phosphorus-doped, ligand-free silicon nanocrystals. At the largest electron concentration achieved in our samples, which is half the predicted nc, we find that the ...
The list of classical tellurides with organic cations was expanded by the synthesis of single‐crystalline salts [Li2(en)n](Tex) (en = ethylenediamine) with n = 4, x = 1 (1), n = 4, x = 2 (2), and n = 5, x = 3 (3), [K(18c6)]2(Tex) (18c6 = 1, 4,7, 10, 13, 16‐hexaoxacycloocta‐decane) with x = 2 (4), 4 (5), [K(18c6)]2[K(en)]2(Te2)2 (6), and [K([2.2.2]crypt)]2(Te2) (7) ([2.2.2]crypt = 4, 7,13, 16, 21, 24‐hexaoxa‐1, 10‐diazabicyclo[8.8.8]‐hexacosane). Electronic structure calculations on free molecules and periodic approaches are discussed and compared with experimental UV/Vis spectra, providing a correlation of the bandgaps with the telluride chain length, and a possibility for affecting the gap by according choice of the counterions. Additionally, 125Te NMR chemical shifts of the presented series of en solvated lithium tellurides are presented. ...
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Tan HW, Xu YM, Wu DD, Lau AT. Recent insights into human bronchial proteomics - how are we progressing and what is next? Expert review of proteomics . 2017. doi: 10.1080/14789450.2017.1417847. PubMed PMID: 29260600.. • Huang SJ, Xu YM, Lau AT. Electronic cigarette: A recent update of its toxic effects on humans. J Cell Physiol. 2017. doi: 10.1002/jcp.26352. PubMed PMID: 29215738.. • Zheng W, Xu YM, Wu DD, Yao Y, Liang ZL, Tan HW, Lau AT. Acute and chronic cadmium telluride quantum dots-exposed human bronchial epithelial cells: The effects of particle sizes on their cytotoxicity and carcinogenicity. Biochem Biophys Res Commun. 2017; 495(1):899-903. doi: 10.1016/j.bbrc.2017.11.074. PubMed PMID: 29137979.. • Xu YM, Yu FY, Lau AT. Discovering Epimodifications of the Genome, Transcriptome, Proteome, and Metabolome: the Quest for Conquering the Uncharted Epi(c) Territories. Current Pharmacology Reports. 2017;3(5):286-93. doi: 10.1007/s40495-017-0103-4.. • Cai NL, Lau AT, Yu FY, Wu DD, Dai LJ, ...
We summarize synchrotron radiation photoemission studies of Ag, Ge and Sm overlayers on Hg1-xCdxTe (110) surfaces. These metals exhibit widely different interface reactivity with Hg1-xCdxTe and yield a range of different interface morphologies. To assess the relative importance of the microscopic driving forces that determine the local composition at the interface and in the semiconductor near surface region we present a systematic comparison of our data with calculated thermodynamic parameters such as the cation-metal heat of solution, the heat of alloying from Miedemas semiempirical model, and the metaltelluride formation enthalpy. (Mercury compounds, Cadmium Tellurides)*CADMIUM TELLURIDES
article{b60df51d-355a-4069-9ae4-51c7aaa1b590, abstract = {We recently refined the in vitro motility assay for studies of actomyosin function to achieve rectified myosin induced sliding of actin filaments. This paves the way, both for detailed functional studies of actomyosin and for nanotechnological applications. In the latter applications it would be desirable to use actin filaments for transportation of cargoes (e.g., enzymes) between different predetermined locations on a chip. We here describe how single quantum dot labelling of isolated actin filaments simultaneously provides handles for cargo attachment and bright and photostable fluorescence labels facilitating cargo detection and filament tracking. Labelling was achieved with preserved actomyosin function using streptavidin-coated CdSe quantum dots (Qdots). These nanocrystals have several unique physical properties and the present work describes their first use for functional studies of isolated proteins outside the cell. The results, ...
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Nanostructured cadmium selenide (CdSe) and lead sulfide (PbS) semiconductors were prepared in a poly(2-(dimethylamino)ethyl methacrylate-co-acrylic acid) matrix. The obtained nanoparticles were characterized by using optical and structural methods. Co-polymers were synthesized in two different molar ratios of pDMAEMA: acrylic acid monomer units (1 : 2, 1 : 1). Transmission electron microscopy analysis confirmed the presence of nano-sized CdSe and PbS particles. In the case of CdSe, a shift of the onset of the optical absorption toward lower wavelengths was observed. X-ray diffraction analysis revealed that both CdSe and PbS nanoparticles have cubic crystal structure ...
We report our theoretical investigation onto the shape dependence of two-photon absorption (TPA) in semiconductor nanocrystals (NCs). Based on a four-band model under effective mass approximation, we have developed a simple analytical theory capable of providing a quantitative explanation of the recent TPA measurement on CdS nanorods [Appl. Phys. Lett. 94, 103117 (2009)]. With this theory, we have systematically revealed the characteristics of TPA in CdSe and ZnO NCs with four different shapes: sphere, cube, cylinder and cuboid. Due to the splitting of degenerate energy levels caused by the decreased degree of symmetry, nanocuboids and nanocubes exhibit greater TPA cross-sections than nanocylinders and nanospheres of similar sizes, respectively. Similarly, nanocuboids and nanocylinders possess larger TPA cross-sections than nanocubes and nanospheres of similar lateral dimension, respectively. Given TPA-allowed transitions, nanocuboids show stronger size dependence than nanocylinders. The size ...
Creative Diagnostics provides DiagNano™ ZnSe/ZnS Quantum Dots, 405 nm for immunoassay, bioseparation and medical imaging applications.
Electrodeposition of cadmium telluride (CdTe) on fluorine doped tin oxide (FTO) using two electrode configurations was successfully achieved with the main focus on the growth temperature. The electroplating temperatures explored ranged between 55 and 85 °C for aqueous electrolytes containing 1.5 M cadmium nitrate tetrahydrate (Cd(NO3)2·4H2O) and 0.002 M tellurium oxide (TeO2). The ensuing CdTe thin-films were characterized using X-ray diffraction (XRD), UV-Vis spectrophotometry, scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and photoelectrochemical (PEC) cell measurements. The electroplated CdTe thin-films exhibit a dominant (111) CdTe cubic structure, while the crystallite size increases with the increase in the electroplating temperature. The dislocation density and the number of crystallites per unit area decrease with increasing growth temperature. The optical characterization depicts that the CdTe samples show comparable absorbance and a resulting bandgap of 1.51 ± ...
This will do that the Semiconductor Nanocrystals and tells defending and will take the security work in the due anti-virus. Besides these regulations, enemies should thus do their reports to include what story training would optimise on their building. If their way place was to let unparalleled for any hallucinogenic summer of analysis, how would it include the mind?
A water-stable semiconductor nanocrystal complex that is stable and has high luminescent quantum yield. The water-stable semiconductor nanocrystal complex has a semiconductor nanocrystal core of a III-V semiconductor nanocrystal material and a water-stabilizing layer. A method of making a water-stable semiconductor nanocrystal complex is also provided.
A quantum dot is a tiny piece of semiconductor material 2 to 10 nanometers in diameter (a nanometer is 1 billionth of a meter). When illuminated with invisible ultraviolet light, a quantum dot will fluoresce with visible light. To enhance the fluorescence, Cunningham and colleagues at the U. of I. begin by creating plastic sheets of photonic crystal using a technique called replica molding. Then they fasten commercially available quantum dots to the surface of the plastic. Quantum dots normally give off light in all directions. However, because the researchers quantum dots are sitting on a photonic crystal, the energy can be channeled in a preferred direction - toward a detector, for example. While the researchers report an enhancement of fluorescence intensity by a factor of up to 108 compared with quantum dots on an unpatterned surface, more recent (unpublished) work has exceeded a factor of 550. The enhanced brightness makes it feasible to use photonic crystals and quantum dots in ...
The present invention generally relates to energy storage devices, and to metal sulfide energy storage devices in particular. Some aspects of the invention relate to energy storage devices comprising at least one flowable electrode, wherein the flowable electrode comprises an electroactive metal sulfide material suspended and/or dissolved in a carrier fluid. In some embodiments, the flowable electrode further comprises a plurality of electronically conductive particles suspended and/or dissolved in the carrier fluid, wherein the electronically conductive particles form a percolating conductive network. An energy storage device comprising a flowable electrode comprising a metal sulfide electroactive material and a percolating conductive network may advantageously exhibit, upon reversible cycling, higher energy densities and specific capacities than conventional energy storage devices.
The biggest buzz may have been for Capote, with Telluride attendee Philip Seymour Hoffman attempting to channel the flamboyant writer of In Cold Blood. Hoffman participated in a wonderful panel discussion about acting at the little park downtown. He and William Macy, Liev Schreiber, Helena Bonham-Carter, Aaron Elkind, and talked about how they build characters and about how they work best. (Charlotte Rampling, one of the festivals honorees. was supposed to be there but didnt make it to the panel discussion.) I also met the screenwriter on the street without realizing who he was. True dork confession: I wheeled my bicycle and went on for a minute about how much I like his TV show (hes a regular on Judging Amy), but I was completely oblivious to the fact that Dan (aka Danny Boy) Futterman wrote the screenplay for Capote. Ill never forget that fact now, will I?. Edmond also got a lot of buzz as a disturbing film, largely because William H. Macy was one of the Telluride Film Fests ...
0027]Typically, colloidal II-IV nanoparticles reported in the literature have sizes in the range of 2-6 nm which is the size range where quantum confinement effect becomes important and room-temperature emissions can be observed. As a result, reports on making II-IV nanocrystals having sizes larger than 10 nm are scarce. In the work of Murray et al., CdSe nanocrystals as large as 11.5 nm have been prepared by injecting a mixture of dimethylcadmium and TOPSe into a hot solution of TOPO and TOP(C. B. Murray, et al., JACS, 115, 8706 [1993]). However, the long hours it takes to reach the size of 11.5 nm, together with the usage of the extremely toxic cadmium precursor CdMe2, makes this preparation method impractical from a manufacture point of view. In addition, large-sized CdSe nanocrystals synthesized by this method using multiple injections are generally limited to around 11 nm and often with a significant aspect ratio. More recently, Pengs group investigated different kinds of safe, common, and ...
Complex Compounds of Zinc and Cadmium Fluoberyllate with Organic Bases". Zeitschrift für anorganische und allgemeine Chemie. ... The thallium compound can cut growth on the 001 axis by 99%. The Tuttons salt (NH4)2Mn(BeF4)2.6(H2O) is made from a solution of ... Similar formula compounds have magnesium or zinc in a similar position. e.g. K2MgF4 or (NH4)2ZnF4 but these are not as stable. ... Therefore, many compounds that contain sulfate, have equivalents with tetrafluoroberyllate. Examples of these are the ...
Cadmium (Cd) and its compounds are well-known human carcinogens. During Cd-induced malignant transformation, the promoter ... From results in gliomas and in cadmium carcinogenesis, methylation of the ERCC1 promoter may be a factor. One or more miRNAs ... aberrant methylation in DNA repair genes during malignant transformation of human bronchial epithelial cells induced by cadmium ...
While studying compounds of zinc, Stromeyer discovered the element cadmium in 1817; cadmium is a common impurity of zinc ... compounds, though often found only in minute quantities. He was also the first to recommend starch as a reagent for free iodine ...
To some extent, these organic compounds have displaced cadmium sulfide from the market. They exist as yellow powders of low ... Diarylide pigments are organic compounds that are used as pigments in inks and related materials. They often are yellow or ...
Shirley, D. A. (1954). "The Synthesis of Ketones from Acid Halides and Organometallic Compounds of Magnesium, Zinc, and Cadmium ... The Blaise ketone synthesis (named after Edmond E. Blaise) is the chemical reaction of acid chlorides with organozinc compounds ...
Like organolithium compounds, Grignard reagents are useful for forming carbon-heteroatom bonds. R 4 B − Et 2 O ⋅ BF 3 or NaBF 4 ... For example, they undergo transmetallation with cadmium chloride (CdCl2) to give dialkylcadmium: 2 RMgX + CdCl2 → R2Cd + 2 Mg(X ... A solution of carbonyl compound is added to the Grignard reagent. The solution is warmed to room temperature. At this point the ... The Grignard reagent thus prepared is cooled to 0°C before the addition of the carbonyl compound. The solution becomes cloudy ...
Typical dots are made of binary compounds such as lead sulfide, lead selenide, cadmium selenide, cadmium sulfide, cadmium ... Dots may also be made from ternary compounds such as cadmium selenide sulfide. These quantum dots can contain as few as 100 to ... The bonding in certain cadmium-free quantum dots, such as III-V-based quantum dots, is more covalent than that in II-VI ... It has been demonstrated that after exposure to ultraviolet radiation or oxidation by air, CdSe QDs release free cadmium ions ...
... the Orbital Processing of High Quality Cadmium Zinc Telluride Compound Semiconductors experiment; the Study of Dopant ... the Vapor Transport Crystal Growth of Mercury Cadmium Tellurida in Microgravity experiment; the Zeolite Crystal Growth Furnace ...
Metallic compounds such as mercury, lead, chromium, cadmium and other heavy metals are concentrated in the structures. ... Common inorganic compounds are macronutrients such as phosphates and nitrates. Principal sources of these nutrients are excess ...
Unlike its lighter neighbors, cadmium and zinc, mercury usually forms simple stable compounds with metal-metal bonds. Most ... Methylmercury, a generic term for compounds with the formula CH3HgX, is a dangerous family of compounds that are often found in ... Unlike organocadmium and organozinc compounds, organomercury compounds do not react with water. They usually have the formula ... cadmium, hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE)." "Mercury compounds in ...
These were mainly cadmium, zinc and lead compounds that were concentrated into the suspended solids in the river. In this way, ... They showed that the Aller was polluting the Weser disproportionally with lead, cadmium, zinc and mercury. The Lower Saxon ...
The compound adopts the cadmium iodide structure, being composed of sheets of octahedral Pt and pyramidal sulfide centers. ... A related compound is platinum(II) sulfide, PtS. S. Soled, A. Wold (1979). "Platinum Disulfide and Platinum Ditelluride". ... Platinum disulfide is the inorganic compound with the formula PtS2. It is a black, semiconducting solid, which is insoluble in ...
In several such accidents, either borax (sodium borate) or a cadmium compound has been added to the system. The cadmium can be ... Alloys or compounds may also be used, such as high-boron steel, silver-indium-cadmium alloy, boron carbide, zirconium diboride ... in practice other compounds are better, such as carbides etc. or compounds with two or more neutron absorber elements together ... the corrosion of the cadmium in the acid will then generate cadmium nitrate in situ. In carbon dioxide-cooled reactors such as ...
An example is the group of fluxes containing zinc, tin or cadmium compounds, usually chlorides, sometimes fluorides or ... Typical compounds used are carboxylic acids (e.g. fatty acids (most often oleic acid and stearic acid), dicarboxylic acids) and ... The compounds used include metal halides (most often zinc chloride or ammonium chloride), hydrochloric acid, phosphoric acid, ... The activators are usually either acids, or compounds that release acids at elevated temperature. The general reaction of oxide ...
Their enthalpy of formation, around −32kJ/mol, is less than a third of the value for the related compound cadmium telluride. ... Capper, P. (ed.) (1994) Properties of Narrow-Gap Cadmium-Based Compounds. INSPEC, IEE, London, UK. ISBN 0-85296-880-9 Boctor, N ... Cadmium telluride HgSe HgCdTe Brice, J. and Capper, P. (eds.) (1987) Properties of mercury cadmium telluride, EMIS datareview, ... Mercury telluride (HgTe) is a binary chemical compound of mercury and tellurium. It is a semi-metal related to the II-VI group ...
... hexavalent chromium compounds, nickel, iron, zinc, copper, cadmium, other heavy metals, cyanide compounds and other ...
... is a compound with the formula SnS 2. The compound crystallizes in the cadmium iodide motif, with the Sn(IV) ... The compound precipitates as a brown solid upon the addition of H 2S to solutions of tin(IV) species. This reaction is reversed ...
An example is the group of fluxes containing zinc, tin or cadmium compounds, usually chlorides, sometimes fluorides or ... Typical compounds used are carboxylic acids (e.g. fatty acids (most often oleic acid and stearic acid), dicarboxylic acids) and ... The compounds used include metal halides (most often zinc chloride or ammonium chloride), hydrochloric acid, phosphoric acid, ... Flux residues also tend to outgas in vacuum and space applications, and traces of water, ions and organic compounds may ...
Occupationally, fumes and dust containing cadmium compounds, a known carcinogen, can be inhaled directly and long term exposure ... Cadmium: Cadmium is another metal, which is found in rechargeable batteries and "phosphor" coatings in older cathode ray tubes ... Heart disease, hypertension, and lung cancer are other health effects of cadmium inhalation. Cadmium exposure is also ... CRTs). Cadmium compounds are used in a variety of electronic products, their functions ranging from stabilizing PVC formations ...
Antioxidant compounds: Sargassum muticum is rich in antioxidant compounds such as phenolic compounds (cathechins, phlorotannins ... "Physicochemical studies of Cadmium (II) biosorption by the invasive alga in Europe Sargassum muticum" (PDF). Lodeiro, P.; ... Previous studies have shown the potential of hydrocarbon and fatty acid compounds in antifouling activities, compounds such as ... Previous studies have shown that Sargassum muticum is able to carry out the biosorption of heavy metals like cadmium, ...
Shirley, D. A. (1954). "The Synthesis of Ketones from Acid Halides and Organometallic Compounds of Magnesium, Zinc, and Cadmium ...
... arsenic and inorganic arsenic compounds, beryllium and beryllium compounds, cadmium compounds, and nickel compounds. Dusts that ...
Additive nomenclature is generally recommended for organometallic compounds of groups 3-12 (transition metals and zinc, cadmium ... The terminology does NOT apply to compounds of the s- or p-block elements such as Ba(C5H5)2 or Sn(C5H5)2. Examples of compounds ... This section of the recommendations covers the naming of compounds containing rings and chains. Where a compound has non ... In binary compounds the more electropositive element is placed first in the formula. The formal list is used. The name of the ...
Ordnance included toxic compounds and elements such as arsenic, lead, mercury, cadmium, depleted uranium and napalm, and tons ... Cadmium and arsenic are carcinogenic. One study from 1999 that tested hair samples from various age groups of Vieques residents ... Testing done in the Icacos Lagoon showed concentrations of cadmium in crabs to be 1,000 times higher than the World Health ... cadmium and copper. Furthermore, they discovered that metal concentrations in edible crops were both substantially above the ...
cadmium, it is assumed that these compounds play a role in heavy metal homeostasis and detoxification by buffering of the ... Sulfur compounds are also of great importance for food quality and for the production of phyto-pharmaceutics. Sulfur deficiency ... Less is known about the content of secondary sulfur compounds in the seedling stage of the plant. It is assumed that alliins ... Cysteine is the precursor or reduced sulfur donor of most other organic sulfur compounds in plants. The predominant proportion ...
Similar materials are cadmium zinc telluride and mercury cadmium telluride. National Pollutant Inventory - Mercury and ... compounds Fact Sheet. ... and mechanical stability than mercury cadmium telluride. The ...
... cadmium, and other toxic compounds. Hudson River tributaries with impaired water quality (not necessarily the same pollutants ... The Department of Health cites mercury, PCBs, dioxin, and cadmium as the chemicals impacting fish in these areas. PCBs are ...
Compounds of mercury(I). Unlike its lighter neighbors, cadmium and zinc, mercury usually forms simple stable compounds with ... Organomercury compounds. Main article: Organomercury compound. Organic mercury compounds are historically important but are of ... Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Methylmercury, a generic term for compounds with the formula CH3HgX, is a dangerous family of compounds that are often found in ...
Synthetic xenoestrogens: alkylphenols, bisphenols (e.g., bisphenol A), parabens, phthalates, polyhalogenated compounds ... Metalloestrogens: cadmium, others Mycoestrogens: taleranol (β-zearalanol), α-zearalenol, β-zearalenol, zearalanone, zearalenone ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Patnaik, Pradyot (2003). Handbook of Inorganic Chemical Compounds. McGraw-Hill. pp. 444-446. ISBN 0-07-049439-8. . Retrieved ... Heiserman, David L. (1992). "Element 39: Yttrium". Exploring Chemical Elements and their Compounds. New York: TAB Books. pp. ... Once reached a human, scandium concentrates in the liver and is a threat to it; some its compounds are possibly carcinogenic, ...
Pacemaker neurons can further be subdivided into cadmium sensitive (CS) and cadmium insensitive (CI) pacemaker neurons. ... Several synthetic compounds have been shown to act on neurons specific to the preBötC, most being selective agonists or ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... "New Type of Zero-Valent Tin Compound". ChemistryViews. 27 August 2016.. *↑ "HSn". NIST Chemistry WebBook. National Institute of ... Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Compounds with the group 13 elementsEdit. The intermetallic compounds of the alkali metals with the heavier group 13 elements ( ... CompoundsEdit. The alkali metals form complete series of compounds with all usually encountered anions, which well illustrate ... Caesium compounds are rarely encountered by most people, but most caesium compounds are mildly toxic. Like rubidium, caesium ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: ...
Cadmium fluoride - CdF2. *Cadmium iodide - CdI2. *Cadmium nitrate - Cd(NO3)2 ... Although most compounds are referred to by their IUPAC systematic names (following IUPAC nomenclature), "traditional" names ... Inorganic Molecules made thinkable, an interactive visualisation showing inorganic compounds for an array of common metal and ... Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_inorganic_compounds&oldid=907095066" ...
Seidell, Atherton; Linke, William F. (1919). Solubilities of Inorganic and Organic Compounds (2nd ed.). New York: D. Van ... కాడ్మియం ఎల్లో("Cadmium Yellow") గా వ్యవహరింపబడుతున్న కాడ్మియం సల్ఫైడ్, ఒక స్థిరమైన ప్రకాశమైన పసుపు రంగును ఇచ్చు వర్ణరసాయన ... ప్రయోగశాలలో/పరిశోధనశాలలో R2Cd రకానికి చెందిన సేంద్రియకాడ్మియం సమ్మేళనాలు(organoCadmium compounds) తయారుచేయుటకు కాడ్మియం ... "Cadmium Chloride - CdCl2". http://wwwchem.uwimona.edu.jm. Mona, Jamaica: The University of the West Indies. Retrieved 2014-06- ...
... as compounds), a combination of vitamins and/or other chemical compounds, or a single element (as a compound or mixture of ... and cadmium have specialized biochemical uses in certain lower organisms, but these elements appear not to be utilized by ... Most chemical elements that are ingested by organisms are in the form of simple compounds. Plants absorb dissolved elements in ... Research has supported that altering inorganic mineral compounds (carbonates, oxides, etc.) by reacting them with organic ...
Exposure to tellurium compounds produces a garlic-like odour on the breath, caused by the formation of ethyl telluride.[13] ... Cadmium oxide (CdO). *Calcium oxide (CaO). *Carbon monoxide (CO). *Chromium(II) oxide (CrO) ... additions of a second compound such as an oxide or halide. TeO2 glasses have high refractive indices and transmit into the mid- ...
Cadmium telluride[edit]. Main article: Cadmium telluride photovoltaics. Cadmium telluride is the only thin film material so far ... Due to the toxicity associated with Cd and Pb based compounds there are also a series of "green" QD sensitizing materials in ... However cadmium is highly toxic and tellurium (anion: "telluride") supplies are limited. The cadmium present in the cells would ... Many use organic materials, often organometallic compounds as well as inorganic substances. Despite the fact that their ...
Clark, Jim (2005). "Some Compounds of the Group 1 Elements". chemguide.co.uk. Hentet 8. august 2013.. ... Legeringer af metallet med aluminium, cadmium, kobber og mangan anvendes til at fremstille flydele.[107] ... Application of Lithium and its Compounds in Energetic Systems". Propellants, Explosives, Pyrotechnics 29 (2): 67-80. doi: ... Clark, Jim (2005). Compounds of the Group 1 Elements. Hentet 10. august 2009.. ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Niobium and its compounds are thought to be slightly toxic, but niobium poisoning is not known to have occurred. Niobium dust ... Tantalum and its compounds rarely cause injury, and when they do, the injuries are normally rashes.[4] ... Vanadium oxide gives ceramics a golden color, and other vanadium compounds are used as catalysts to produce polymers.[4] ...
... (APS) is the inorganic compound with the formula (NH4)2S2O8. It is a colourless (white) salt that is highly ... This experiment was extended to other metals such as nickel, cadmium, and iron, all of which yielded similar results.[6] The ... Harald Jakob; Stefan Leininger; Thomas Lehmann; Sylvia Jacobi; Sven Gutewort, "Peroxo Compounds, Inorganic", Ullmann's ...
response to cadmium ion. • negative regulation of calcineurin-NFAT signaling cascade. • response to copper ion. • negative ... to compound risk for both Alzheimer's and sporadic Creutzfeldt-Jakob disease.[54] A point mutation on codon 102 of PRNP at ... no such compound has been identified. However, a large body of research has developed on candidates and their interaction with ...
Environmental hazard due to Cadmium - use now virtually prohibited in Europe. Lead-acid. 2.1. 140. Moderately expensive. ... The high electrochemical potential changes in the reactions of lithium compounds give lithium cells emfs of 3 volts or more.[22 ... Nickel-cadmium chemistry.. Inexpensive. High-/low-drain, moderate energy density. Can withstand very high discharge rates with ... Cells of this type (in order of increasing power density and cost) include nickel-cadmium (NiCd), nickel-zinc (NiZn), nickel ...
The metal M in the negative electrode of a NiMH cell is an intermetallic compound. Many different compounds have been developed ... The chemical reaction at the positive electrode is similar to that of the nickel-cadmium cell (NiCd), with both using nickel ... Any of these compounds serve the same role, reversibly forming a mixture of metal hydride compounds. ... Some cells use higher-capacity negative electrode materials based on AB2 compounds, where A is titanium or vanadium, and B is ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... In aqueous solution, like compounds of other late lanthanides, soluble ytterbium compounds form complexes with nine water ... 2 oxidation state occurs only in solid compounds and reacts in some ways similarly to the alkaline earth metal compounds; for ... Marignac suspected that ytterbia was a compound of a new element that he called "ytterbium".[9][23][25][26][27] ...
Chemical compounds[change , change source]. See also: Category:Barium compounds. Barium is too reactive as a metal, so it is ... Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... As chemical compounds[change , change source]. Certain compounds of barium, such as barium sulfate, are not toxic and can be ... It is found in chemical compounds. Barium only occurs in one oxidation state: +2. Most barium compounds are colorless. The ones ...
Cadmium 1817 S. L Hermann, F. Stromeyer, and J.C.H. Roloff 1817 S. L Hermann, F. Stromeyer, and J.C.H. Roloff All three found ... "Exploring Chemical Elements and their Compounds. New York: TAB Books. pp. 150-152. ISBN 0-8306-3018-X. .. ... "48 Cadmium". Elements.vanderkrogt.net. Retrieved 2008-09-12.. *^ "34 Selenium". Elements.vanderkrogt.net. Retrieved 2008-09-12. ... Humphry Davy thought in 1800 that silica was a compound, not an element, and in 1808 suggested the present name. In 1811 Louis- ...
MJ-cells are compound semiconductors and made of gallium arsenide (GaAs) and other semiconductor materials. Another emerging PV ... while the rest of the overall market is made up of thin-film technologies using cadmium telluride, CIGS and amorphous silicon[ ... For cadmium telluride modules, the recycling process begins by crushing the module and subsequently separating the different ...
Chemical compounds are listed separately at list of organic compounds, list of inorganic compounds or list of biomolecules. ... cadmium Calamine Calcite Calcium Calcium carbonate Calcium oxide Californium calomel Calorimeter Canfieldite Carbohydrate ... of elements named after places List of inorganic compounds List of inorganic compounds by element List of organic compounds ... symbol alchemist Alchemy alcohol aldehyde Alexandrite Alfred Stock Alfred Werner alicyclic compound aliphatic compound Alkali ...
Cadmium 48. Cd. 112.411(8) isotopes Indium 49. In. 114.818(3) isotopes Tin 50. Sn. 118.710(7) isotopes Antimony 51. Sb. 121.760 ... Chemical compounds. *{{నైట్రేట్లు}}. *{{Perchlorrates}}. *{{Persistent carbene}}. Legends. *{{periodic table legend}} (multiple ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Germane (GeH4) is a compound similar in structure to methane. Polygermanes-compounds that are similar to alkanes-with formula ... Precautions for chemically reactive germanium compoundsEdit. Some of germanium's artificially-produced compounds are quite ... Additionally Ge2Cl6 and some higher compounds of formula GenCl2n+2 are known.[28] The unusual compound Ge6Cl16 has been ...
Mercury and cadmiumEdit. Some button cells contain mercury or cadmium, which are toxic. In early 2013 the European Parliament ... In 2020, Duracell announced that they were coating some of their lithium button cells with a bitterant compound to discourage ...
Firmstone, H. (1879). "On a Deposit of Cadmia in a Coke Blast Furnace". Transactions of the American Institute of Mining ... The cut material cannot be used as fill beneath roads and structures due to volumetric expansion, compounding the problem.[85] ... but deposited a hard mass of impure zinc oxide known as cadmia, which built up over time near the top of the flue, and had to ...
Related compounds Other anions Calcium sulfide. Calcium hydroxide Other cations Beryllium oxide. Magnesium oxide. Strontium ... Cadmium oxide (CdO). *Calcium oxide (CaO). *Carbon monoxide (CO) ...
"Olive oil phenolic compounds affect the release of aroma compounds". Food Chem. 181: 284-94. doi:10.1016/j.foodchem.2015.02.097 ... Olive oil has also been used as both solvent and ligand in the synthesis of cadmium selenide quantum dots.[59] ... "The phenolic compounds of olive oil: structure, biological activity and beneficial effects on human health". Retrieved ... Olive oil is a source of at least 30 phenolic compounds, among which is elenolic acid, a marker for maturation of olives.[68][ ...
Villa, Javier E. L.; Peixoto, Rafaella R. A.; Cadore, Solange (2014). "Cadmium and Lead in Chocolates Commercialized in Brazil ...
Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium ... Oxides and other inorganic compounds. Water (H. 2O) is an oxide of hydrogen and the most familiar oxygen compound. Hydrogen ... The oxidation state of oxygen is −2 in almost all known compounds of oxygen. The oxidation state −1 is found in a few compounds ... Most of the organic compounds that contain oxygen are not made by direct action of O. 2. Organic compounds important in ...
113Cd Shielding Tensors of Momomeric Cadmium Compounds Containing Nitrogen Donor Atoms. 2. Synthesis, Crystal Structures, and ... Water-Soluble Organometallic Compounds 1. The Synthesis, Characterization, and X-ray Structure of [Na-kryptofix-221]3[W(CO)5P{C ... Kinetic Studies of Thermal Decomposition and Substitution Reactions of cis-Mo (CO)4[P(C6H5)3](amine) Compounds. A Competitive ... Crystal Structure of Bis(hydro(tris-3-phenylpyrazolyl)borate)-cadmium(II), C27H21BCd0.50N6, J. H. Reibenspies, K. K. Klausmeyer ...
Cadmium oxide is an inorganic compound with the formula CdO. It is one of the main precursors to other cadmium compounds. It ... Since cadmium compounds are often found in association with zinc ores, cadmium oxide is a common by-product of zinc refining.[ ... A thin coat of cadmium oxide forms on the surface of cadmium in moist air at room temperature.[12] Cadmium will oxidize at room ... Cadmium oxide is used in cadmium plating baths, electrodes for storage batteries, cadmium salts, catalyst, ceramic glazes, ...
... loaded with bacteria decorated with cadmium sulfide, light-absorbing nanocrystals (middle) to convert light, water and carbon ... Artists rendering of bioreactor (left) loaded with bacteria decorated with cadmium sulfide, light-absorbing nanocrystals ( ... Cyborg Bacteria Outperform Plants When Turning Sunlight into Useful Compounds (IMAGE) view more ... Cyborg Bacteria Outperform Plants When Turning Sunlight into Useful Compounds (image). American Chemical Society ...
Page contains details about gold-deposited cadmium sulfide nanorods . It has composition images, properties, Characterization ... cadmium sulphide cadmium sulfide hawleyite See all names (4) Type Single Compound ...
... and cadmium telluride (CdTe). These two semiconductors form a continuous semiconductor alloy CdxHg1 − xTe, where x is any ... Other articles where Cadmium telluride is discussed: crystal: Growth from the melt: …is mercury telluride (HgTe) ... is mercury telluride (HgTe) and cadmium telluride (CdTe). These two semiconductors form a continuous semiconductor alloy CdxHg1 ...
... cadmium: Compounds: …most important cadmium compound is cadmium oxide, CdO. It is a brown powder produced by burning cadmium ... Another compound of some economic value is cadmium sulfide, CdS. Generally produced by treating cadmium… ... vapor in air, and it provides a convenient starting material for the production of most other cadmium salts. ... In cadmium: Compounds. …most important cadmium compound is cadmium oxide, CdO. It is a brown powder produced by burning cadmium ...
Ammonium cadmium chloride (Ammonium cadmium trichloride) - 18532-52-0 Expert judgement Cadmium pyrophosphate - 19262-93-2 ... Flue dust, cadmium-refining By-product of refining of cadmium consisting primarily of oxides and chlorides of cadmium, lead, ... Leach residues, cadmium cake Residues obtained by cementation of cadmium by iron dust out of cadmium sulfate solutions. ... Calcines, cadmium residue Product of the roasting of cadmium-enriched lead smelting dusts to remove cadmium. Consists primarily ...
Flue dust, cadmium-refining By-product of refining of cadmium consisting primarily of oxides and chlorides of cadmium, lead, ... Leach residues, cadmium cake Residues obtained by cementation of cadmium by iron dust out of cadmium sulfate solutions. ... Calcines, cadmium residue Product of the roasting of cadmium-enriched lead smelting dusts to remove cadmium. Consists primarily ... Cadmium divanadium hexoxide 240-203-3 16056-72-7 Expert judgement 5-oxo-L-proline, cadmium salt 240-269-3 16105-06-9 Expert ...
... the revised IDLH for cadmium compounds is 9 mg Cd/m3 which was the original IDLH for cadmium fume. [Note: NIOSH recommends as ... 1. ACGIH [1971]. Cadmium and compounds (as Cd). In: Documentation of the threshold limit values for substances in workroom air ... From ACGIH [1991]. Cadmium and compounds. In: Documentation of the threshold limit values and biological exposure indices. 6th ... NIOSH REL: None established; NIOSH considers cadmium compounds to be potential occupational carcinogens as defined by the OSHA ...
Home » Phenylalanine Ammonia-Lyase and Phenolic Compounds in Chamomile Tolerance to Cadmium and Copper Excess ... Phenylalanine Ammonia-Lyase and Phenolic Compounds in Chamomile Tolerance to Cadmium and Copper Excess. ... Cadmium (Cd) and copper (Cu) uptake by the plants of Matricaria chamomilla and relation to activities of guaiacol peroxidase ( ... Oxidative status of Matricaria chamomilla plants related to cadmium and copper uptake. Kováčik, Jozef; Bačkor, Martin // ...
Compounds, Intermetallics & Composites for research & industrial markets. View our small quantity Catalogue. ... Cadmium Selenide ( CdSe ). Material Information Buy Cadmium Selenide on-line. We stock and supply the following standard forms: ...
An endophytic bacterium Acinetobacter calcoaceticus Sasm3-enhanced phytoremediation of nitrate-cadmium compound polluted soil ... The cadmium concentration in rape increased significantly with mono-inoculating treatment, whereas it decreased significantly ... the endophytic bacterium Sasm3-inoculated intercropping system not only improved the efficiency of clearing cadmium from soil ...
Cadmium is contained in phosphate rock and phosphate fertilizer, it accumulates in soils and enters the food chain, which ... Changes of Seed Quality and Cadmium Content of Different Peanut Genotypes under Cadmium Stress[J];Shandong Agricultural ... Cadmium is contained in phosphate rock and phosphate fertilizer, it accumulates in soils and enters the food chain, which ... Pay attention to the hazardous cadmium in phosphate fertilizer. MA Rong(Room 1501, Building 24, South Liufang Lane, Chaoyang ...
Long term inhalation studies with Syrian hamsters were performed to evaluate the effects of different cadmium compounds on the ... Histological observations and morphometric analysis in lungs of hamsters after long term inhalation of cadmium compounds. ... cadmium; hamster; Inhalation; light microscopy; long-term inhalation; lung; morphometry; pathology. Abstract. ...
The International Cadmium Association (ICdA) is a non-profit organisation based in Belgium with a regional office in North ... cadmium compounds, and products to which cadmium or its compounds have intentionally been added. ... Management of the risks related to Chronic Occupational Exposure to Cadmium and its compounds (2018.2 revision) ... The International Cadmium Association (ICdA) is a non-profit association representing the interests of the worlds cadmium ...
The extraction of cadmium from zinc-containing materials and ores by the Waelz process using oil sludge  ... Methods of extraction of cadmium from ores and zinc-containing materials are considered in the article. The Waelz process of ...
Amines, including salts, amides and other organic nitrogen compounds NES Singapore (6) ...
Therefore, exposure to cadmium is widespread and presents a considerable health concern. Cadmium is known to be a carcinogen; ... Cadmium (Cd) is an essential material used in the battery, metal-coating, and alloy industries. In addition to these industrial ... Cell-transformation; Cadmium-compounds; Cigarette-smoking; Health-hazards; Carcinogens; Carcinogenesis; Cancer; Genes; Proteins ... Therefore, exposure to cadmium is widespread and presents a considerable health concern. Cadmium is known to be a carcinogen; ...
Cadmium sulfide is the inorganic compound with the formula CdS. Cadmium sulfide is a green solid.[4] It occurs in nature with ... Cadmium sulfide is toxic, especially when inhaled as dust, and cadmium compounds general are classified as carcinogenic.[35] ... Karl-Heinz Schulte-Schrepping, Magnus Piscator "Cadmium and Cadmium Compounds" in Ullmanns Encyclopedia of Industrial ... As a compound that is easy to isolate and purify, it is the principal source of cadmium for all commercial applications.[4] Its ...
... bromide cadmium carbonate cadmium oxide cadmium sulfate cathode cell cerium Chem chim chromate coating color complex compounds ... Comprehensive Inorganic Chemistry: Zinc, cadmium, and mercury, by H. M. Cyr and the editors. Scandium, yttrium, and the ... Comprehensive Inorganic Chemistry: Zinc, cadmium, and mercury, by H. M. Cyr and the editors. Scandium, yttrium, and the ... zinc rare-earth reaction reacts reported rubber scandium selenic silicate sodium hydroxide soluble in water solution of cadmium ...
Cadmium Compounds Canada and USA Report & Database * Report. *August 2020. * 1949 Pages ... Cadmium Pigments Market, Size, Share, Outlook and COVID-19 Strategies, Global Forecasts from 2019 to 2026 * Report ... The United Kingdom - Cadmium and Articles Thereof - Market Analysis, Forecast, Size, Trends and Insights * Report ... The Netherlands - Cadmium and Articles Thereof - Market Analysis, Forecast, Size, Trends and Insights * Report ...
Renal function was evaluated in 60 workers previously exposed to cadmium in a factory using cadmium-containing solders and in ... lesiones renales; cadmio; estanado. Descriptores (secundarios). disfunci n renal; pruebas de las funciones renales; proteinuria ... Assessment of renal function in workers previously exposed to cadmium. Informaci n bibliogr fica. Nov. 1985, Vol.42, No.11, p. ... There were no cases of typical glomerular proteinuria that could be related to cadmium. Renal stones were more common among ...
An increase in blood cadmium without any changes in urine cadmium could be explained by the accumulation of cadmium in tissues ... The objective of this study was to determine blood and urine cadmium levels of young adults occupationally exposed to cadmium ... There were no statistical differences between smokers and non-smokers in urine cadmium concentrations, whereas blood cadmium ... Smoking and blood cadmium concentrations in young pre-employees. Bibliographic information. 2001, Vol.7, No.1, p.22-25. 7 ref. ...
CADMIUM COMPOUNDS; ELEMENTS; INSECTS; INTAKE; INVERTEBRATES; LEPIDOPTERA; METALS; MOTHS; OXYGEN COMPOUNDS; SULFATES; SULFUR ... MAT.; CADMIUM; BIOLOGICAL EFFECTS; DOSE-RESPONSE RELATIONSHIPS; ZINC; CADMIUM SULFATES; DIET; INGESTION; LARVAE; LIFE CYCLE; ... I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L}. author = {Miyoshi, T, Miyazawa, F, and Shimizu, O}. ... Cadmium sulfate and zinc sulate salts in graded concentration were fed to silkworm larvae using an artificial diet. Tests were ...
77 NANOSCIENCE AND NANOTECHNOLOGY; CADMIUM COMPOUNDS; CHALCOGENIDES; CHARGE COLLECTION; CHARGE TRANSPORT; CRYSTALS; DNA; ... Journal Article: Charge transport through exciton shelves in cadmium chalcogenide quantum dot-DNA nano-bioelectronic thin films ... Title: Charge transport through exciton shelves in cadmium chalcogenide quantum dot-DNA nano-bioelectronic thin films ...
A novel penta-coordinated cadmium compound: catena-poly[benzyl-tri-ethyl-ammonium [[chlorido-cadmate(II)]-di-μ-chlorido]]. ... Acetyl-acetonato-κ2O,O′)(2,2′-bi-pyridine-κ2N,N′)iodido-copper(II): a compound with two mol-ecules in the asymmetric unit due ... The title compound crystallizes in the space group P. with Z = 4. The crystal is stabilized by π-π inter-actions and weak C-H⋯I ... The title compound was synthesized in high yield by a three-component Kabachnik-Fields reaction. It precipitates as racemic ...
... cadmium (Cd) induces both damaging and repair processes in which the cellular redox status plays a crucial role. Being not ... RC IA (1993) Cadmium and cadmium compounds. IARC Monographs. International Agency for research on Cancer, Lyon, FranceGoogle ... Nawrot TS, Van Hecke E, Thijs L et al (2008) Cadmium-related mortality and long-term secular trends in the cadmium body burden ... Thévenod F (2009) Cadmium and cellular signaling cascades: to be or not to be? Toxicol Appl Pharm 238(3):221-239CrossRefGoogle ...
... heat cadmium-containing compounds or cadmium-coated surfaces; weld with cadmium solders or cut cadmium-containing materials ... C. Appearance: Cadmium metal-soft, blue-white, malleable, lustrous metal or grayish-white powder. Some cadmium compounds may ... of four cadmium compounds.. Based on the above cited studies, the U.S. Environmental Protection Agency (EPA) classified cadmium ... chronic exposure to cadmium; 2) to prevent cadmium-induced disease(s); and 3) to detect and minimize existing cadmium-induced ...
Boron Compounds. Bromine. Bromine Compounds. C. Cadmium Compounds. Calcium Carbide. Calcium Chloride. Calcium Sulfate. Carbides ... Ammonium Compounds. Antimony Compounds. Arsenic Compounds. B. Barium Compounds. Beryllium Compounds. Bismuth Compounds. Boric ... Titanium Compounds. Tungsten Compounds. V. Vanadium Compounds. W. Water. Z. Zeolites. Zinc Compounds. Zirconium Compounds. ... Iodine and Iodine Compounds. Iron Compounds. L. Lead Compounds. Lime and Limestone. Lithium Compounds. M. Magnesium Compounds. ...
Cadmium and Cadmium Alloys.. Cadmium Compounds.. Calcium and Calcium Alloys.. Calcium Carbide. ...
Organotin compounds. Fentin, triphenyl tin. Cadmium compounds. Miscellaneous organic fungicides. Benomyl, cyclohexamide, ... Sulfur compounds, long used on plants, have been supplemented for some time by other chemicals, especially by compounds of ... Organotin compounds also have serious human toxicity and are very toxic to the environment; their use is banned or severely ... Sulfur, sulfur-containing compounds, organic salts of iron, and heavy metals are all used as fungicides. Other fungicide types ...
The TLVs include 0.01 mg/cubic meter for cadmium metal, 0.002 mg/cubic meter for all cadmium compounds, 0.05 mg/cubic meter for ... Certain compounds of lead, chromium, and cadmium. (a) Chemical substances and significant new uses subject to reporting. (1) ... V. Information on the Subject Lead, Chromium, and/or Cadmium Containing Compounds A. Health Effects EPA reviewed health hazard ... 14). Also, long-term human exposure to low levels of cadmium compounds has been associated with a variety of toxic effects such ...
  • Artist's rendering of bioreactor (left) loaded with bacteria decorated with cadmium sulfide, light-absorbing nanocrystals (middle) to convert light, water and carbon dioxide into useful chemicals (right). (eurekalert.org)
  • 6. Formation of ( h -Benzene) or ( h -Cyclohexa-1 ,3 -diene) Compounds of Chromium, Tungsten and Rhenium from Cyclohexane and the Metal atoms. (columbia.edu)
  • The contaminants include volatile organic compounds and metals, such as chromium, cadmium and nickel. (cdc.gov)
  • most important cadmium compound is cadmium oxide, CdO. (britannica.com)
  • The lethal dose of thermally generated cadmium oxide fume of not more than 2,900 mg-min/m 3 has been reported [Barrett and Card 1947], which is equivalent to about 85 mg Cd/m 3 for 30 minutes. (cdc.gov)
  • cadmium is a heavy metal used in industry which is found mainly as an oxide, chloride, sulphate, nitrate or sulphide. (anses.fr)
  • Cadmium oxide (CdO) can be found in the atmosphere in the form of dust or fumes. (anses.fr)
  • Cadmium is also found in cigarette smoke in the form of minute particles of cadmium oxide which settle mainly in the pulmonary alveoli. (anses.fr)
  • Cd + 2 HCl → CdCl2 + H2 Hydrochloric acid may be used to make hydrated CdCl2 from the metal, or from cadmium oxide or cadmium carbonate. (wikipedia.org)
  • the crystalline form of this compound is a dark red which changes color when heated, similar to zinc oxide. (wikipedia.org)
  • Cadmium (as oxide, chloride, and sulfate) will exist in air as particles or vapors (from high temperature processes). (cdc.gov)
  • Certain cadmium compounds, including chloride, sulfate and oxide compounds, have been shown to cause cancer in animals. (greenspec.co.uk)
  • The causing of cancer by exposure to the above compounds has not been proven to occur in humans, but employers are required to handle cadmium oxide, cadmium chloride and cadmium sulfate as if they can cause cancer. (greenspec.co.uk)
  • The chosen IDLH is based on the statement by ACGIH [1971] that an exposure to 9 mg/m 3 cadmium fume for 5 hours is a lethal dose [Beton et al. (cdc.gov)
  • It has been reported that exposure to 9 mg/m 3 of cadmium fume for 5 hours is a lethal dose [Beton et al. (cdc.gov)
  • Therefore, exposure to cadmium is widespread and presents a considerable health concern. (cdc.gov)
  • After 20 to 40 years of smoking, and without exposure to any other source of cadmium, it is expected that smokers would reach the urinary level of 5 g/g creatinine that would warrant job reassignment away from cadmium exposure. (ilo.org)
  • Further thought needs to be given to reassignment policies and work practices for smokers and non-smokers with respect to cadmium exposure. (ilo.org)
  • 1. Short-term (acute) exposure: Cadmium is much more dangerous by inhalation than by ingestion. (osha.gov)
  • Repeated or long-term exposure to cadmium, even at relatively low concentrations, may result in kidney damage and an increased risk of cancer of the lung and of the prostate. (osha.gov)
  • Cadmium does not have a detectable odor except at levels well above the permissible exposure limits. (osha.gov)
  • Final Report: Multisite lead and cadmium exposure study with biological markers incorporated. (cdc.gov)
  • Exposure to cadmium occurs mostly in workplaces where cadmium products are made. (cancer.gov)
  • The general population is exposed to cadmium by breathing tobacco smoke or eating cadmium-contaminated foods, which is the major source of cadmium exposure for nonsmokers. (cancer.gov)
  • The expanding nickel-cadmium (NiCd) battery recycling industry is also a potential source for exposure. (cancer.gov)
  • Which cancers are associated with exposure to cadmium? (cancer.gov)
  • Occupational exposure to various cadmium compounds is associated with an increased risk of lung cancer . (cancer.gov)
  • Cadmium and its compounds are highly toxic and exposure is known to cause cancer. (cancer.gov)
  • Occupational exposure to cadmium primarily occurs in operations involving heating cadmium-containing products. (cancer.gov)
  • Either short-term or long-term exposure to cadmium can cause serious health problems. (winchesterhospital.org)
  • Anyone can develop cadmium toxicity as a result of cadmium exposure. (winchesterhospital.org)
  • Association of environmental cadmium exposure with pediatric dental caries. (cdc.gov)
  • BACKGROUND: Although animal experiments have shown that cadmium exposure results in severe dental caries, limited epidemiologic data are available on this issue. (cdc.gov)
  • OBJECTIVES: We aimed to examine the relationship between environmental cadmium exposure and dental caries in children 6-12 years of age. (cdc.gov)
  • CONCLUSIONS: Environmental cadmium exposure may be associated with increased risk of dental caries in deciduous teeth of children. (cdc.gov)
  • This public health statement tells you about cadmium and the effects of exposure to it. (cdc.gov)
  • In the United States, for nonsmokers the primary source of cadmium exposure is from the food supply. (cdc.gov)
  • Electroplating, metal machining, welding and painting are operations associated with cadmium exposure. (greenspec.co.uk)
  • The health effects associated with cadmium exposure depend on the way people are exposed to cadmium, how much has entered the person's body, how long the person has been exposed for and how the person's body responds to the exposure. (greenspec.co.uk)
  • In addition, it is considered that human exposure to cadmium chloride may result in impaired fertility or harm to the unborn child. (greenspec.co.uk)
  • Phenylalanine ammonia-lyase activity (PAL, EC 4.3.1.5), total phenolics, soluble proteins, malondialdehyde and metals accumulation in four-week old chamomile ( Matricaria chamomilla) plants cultivated in nutrient solution and exposed to low (3 μM) and high (60 and 120 μM) levels of cadmium (Cd) or copper (Cu) for 7 days were studied. (ebscohost.com)
  • Most cadmium used in the United States is extracted during the production of other metals such as zinc, lead, and copper. (cancer.gov)
  • While dietary sources can be sporadic, intake from tobacco occurs with each cigarette smoked and can proceed for decades resulting in accumulation of metals like cadmium in the body. (cancer.gov)
  • Hazardous air pollutants include heavy metals, volatile and semi volatile organic compounds, polycyclic aromatic hydrocarbons and aldehydes. (abs.gov.au)
  • However, recently reported fluoride Hg(IV) compounds, which have a d 8 configuration put this exemption into doubt and make it reasonable to consider Hg (and possibly Zn and Cd too) as transition metals. (wikibooks.org)
  • Transition metals and their oxides, when dissolved, form colored compounds. (wikibooks.org)
  • Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting point than the transition metals in groups 3 through 11. (wikipedia.org)
  • Cadmium and its congeners in group 12 are often not considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. (wikipedia.org)
  • Unlike most other metals, cadmium is resistant to corrosion and is used as a protective plate on other metals. (wikipedia.org)
  • Cadmium and its congeners are not always considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. (wikipedia.org)
  • Cadmium toxicity occurs when a person breathes in high levels of cadmium from the air, or eats food or drinks water containing high levels of cadmium. (winchesterhospital.org)
  • In general, leafy vegetables such as lettuce and spinach, potatoes and grains, peanuts, soybeans, and sunflower seeds contain high levels of cadmium, approximately 0.05- 0.12 mg cadmium/kg. (cdc.gov)
  • Tobacco leaves accumulate high levels of cadmium from the soil. (cdc.gov)
  • Breathing air with high levels of cadmium over a short period of time is initially like the flu with chills, fever and muscle pain, then later can cause lung damage, shortness of breath, chest pain and cough, which may lead to death in severe cases. (greenspec.co.uk)
  • Breathing lower levels of cadmium over a longer period of time can lead to kidney disease and cause bones to become weaker. (greenspec.co.uk)
  • Cadmium sulfate and zinc sulate salts in graded concentration were fed to silkworm larvae using an artificial diet. (osti.gov)
  • I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L} author = {Miyoshi, T, Miyazawa, F, and Shimizu, O} abstractNote = {Cadmium sulfate and zinc sulate salts in graded concentration were fed to silkworm larvae using an artificial diet. (osti.gov)
  • cadmium sulfate and cadmium chloride] on growth, total amount of chlorophyll, nodulation and nitrogen fixation in Sesbania sesban plants. (who.int)
  • Hydrochloric acid, sulfuric acid, and nitric acid dissolve cadmium by forming cadmium chloride (CdCl2), cadmium sulfate (CdSO4), or cadmium nitrate (Cd(NO3)2). (wikipedia.org)
  • Cadmium chloride and cadmium sulfate are soluble in water. (cdc.gov)
  • NIOSH considers cadmium compounds to be potential occupational carcinogens as defined by the OSHA carcinogen policy [29 CFR 1990]. (cdc.gov)
  • Cadmium and Cadmium Compounds, Report on Carcinogens, Fourteenth Edition. (cancer.gov)
  • Cadmium and Cadmium Compounds: known to be human carcinogens. (greenspec.co.uk)
  • Renal stones were more common among workers with high urinary cadmium concentrations. (ilo.org)
  • There were no statistical differences between smokers and non-smokers in urine cadmium concentrations, whereas blood cadmium levels in young adult smokers were 11 times higher than in non-smokers. (ilo.org)
  • Modulation of tissue trace metal concentrations in weanling rats fed different levels of zinc and exposed to oral lead and cadmium. (cdc.gov)
  • Cadmium is an element found in low concentrations in the earth's crust. (cancer.gov)
  • METHODS: We analyzed cross-sectional data, including urine cadmium concentrations and counts of decayed or filled tooth surfaces, from the Third National Health and Nutrition Examination Survey. (cdc.gov)
  • We used logistic and zero-inflated negative binomial (ZINB) regression to estimate the association between urine cadmium concentrations and caries experience, adjusting these analyses for potential confounders including environmental tobacco smoke (ETS). (cdc.gov)
  • RESULTS: Urine cadmium concentrations ranged from 0.01 to 3.38 ng/mL. (cdc.gov)
  • As a compound that is easy to isolate and purify, it is the principal source of cadmium for all commercial applications. (wikipedia.org)
  • Smoking is the main source of cadmium, a known human carcinogen, among young adults. (ilo.org)
  • Smoking is the highest source of cadmium intake for most people. (winchesterhospital.org)
  • Toxic Substances Portal - Cadmium. (cancer.gov)
  • Cadmium use is generally decreasing because it is toxic (it is specifically listed in the European Restriction of Hazardous Substances) and nickel-cadmium batteries have been replaced with nickel-metal hydride and lithium-ion batteries. (wikipedia.org)
  • The City of Toronto's ChemTRAC program requires local facilities to annually track and report on the use and release of 25 priority substances like mercury, lead and cadmium (see full list below article). (torontoenvironment.org)
  • Cadmium exists as the hydrated ion or as ionic complexes with other inorganic or organic substances. (cdc.gov)
  • Cadmium Dust, NIOSH Pocket Guide to Chemical Hazards. (cancer.gov)
  • Chemical compounds resembling arsenic, cadmium, and uranium within the soil. (amazonaws.com)
  • Cadmium is a chemical element with symbol Cd and atomic number 48. (wikipedia.org)
  • Cadmium does not corrode easily and has been used to manufacture batteries, pigments, metal coatings, and plastics. (cancer.gov)
  • Cadmium is introduced to the food chain through agricultural soils, which may naturally contain cadmium, or from anthropogenic (human) sources, from cadmium-based pigments, and stabilizers used in certain plastics. (cancer.gov)
  • Cadmium was used for a long time as a corrosion-resistant plating on steel, and cadmium compounds are used as red, orange and yellow pigments, to colour glass, and to stabilize plastic. (wikipedia.org)
  • It also captures certain labeling requirements on such products containing mercury, cadmium and lead above specified quantities. (europa.eu)
  • 1991. Epidemiological study of cadmium and lead in the hair of ceramists and dental personnel. (cdc.gov)
  • We found one overexposure to lead and two overexposures to cadmium. (cdc.gov)
  • We also found some elevated blood lead levels (above 10 micrograms per deciliter), however no employees at any facility had detectable mercury in their urine or exceeded 34% of the OELs for blood or urine cadmium. (cdc.gov)
  • Environmental exposures to lead, mercury, and cadmium and hearing loss in adults and adolescents: KNHANES 2010-2012. (cdc.gov)
  • Objectives: We examined the association between environmental exposures to lead, mercury, and cadmium and the risk of hearing loss in adults and adolescents while controlling for potential confounding factors, including noise exposures and clinical factors. (cdc.gov)
  • Cadmium is a natural element found in the earth's crust, and has been used to make batteries and other products. (cancer.gov)
  • Cadmium is found in the Earth's crust in combination with zinc. (greenspec.co.uk)
  • It is a brown powder produced by burning cadmium vapor in air, and it provides a convenient starting material for the production of most other cadmium salts. (britannica.com)
  • Pigment production usually involves the precipitation of CdS, the washing of the solid precipitate to remove soluble cadmium salts followed by calcination (roasting) to convert it to the hexagonal form followed by milling to produce a powder. (wikipedia.org)
  • 2. Protective Clothing: You may be required to wear impermeable clothing, gloves, foot gear, a face shield, or other appropriate protective clothing to prevent skin contact with cadmium. (osha.gov)
  • 4. Formation of an h 2 -Formaldehyde compound from Methanol and its Hydrogenation giving Methanol. (columbia.edu)
  • All soils and rocks, including coal and mineral fertilizers, contain some cadmium. (cancer.gov)
  • If you maintain a vegetable garden, consider having fertilizers tested for cadmium. (winchesterhospital.org)
  • Some fertilizers have been found to be high in cadmium, which may then concentrate in your vegetables. (winchesterhospital.org)
  • Cadmium is emitted to soil, water, and air by non-ferrous metal mining and refining, manufacture and application of phosphate fertilizers, fossil fuel combustion, and waste incineration and disposal. (cdc.gov)
  • [4] It occurs in nature with two different crystal structures as the rare minerals greenockite and hawleyite , but is more prevalent as an impurity substituent in the similarly structured zinc ores sphalerite and wurtzite , which are the major economic sources of cadmium. (wikipedia.org)
  • Identify potential sources of cadmium in and around your home, at work, and where your children play. (winchesterhospital.org)
  • Bromine, Organic Compounds. (wiley.com)
  • fails to meet California's Regulation for Reducing Volatile Organic Compound Emissions from Consumer Products and/or applicable California SCAQMD rules (e.g. (goodhousekeeping.com)
  • Solubilities of Inorganic and Organic Compounds (2nd ed. (wikipedia.org)
  • The top two chemicals facilities reported are volatile organic compounds (VOCs), with 43,821,444 kg used, nine per cent of which was reported as released to the environment. (torontoenvironment.org)
  • Cadmium and its compounds may travel through soil, but its mobility depends on several factors such as pH and amount of organic matter, which will vary depending on the local environment. (cdc.gov)
  • Generally, cadmium binds strongly to organic matter where it will be immobile in soil and be taken up by plant life, eventually, entering the food supply. (cdc.gov)
  • The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm). (wikipedia.org)
  • 4. Inhalation: If large amounts of cadmium are inhaled, the exposed person must be moved to fresh air at once. (osha.gov)
  • The general population may be exposed to small amounts of cadmium daily through food, tobacco smoke (as active or secondhand smoke), drinking water, and air. (cancer.gov)
  • The U.S. Occupational Safety & Health Administration has more information about controlling exposures to cadmium. (cancer.gov)
  • In 2011 to 2012, the blood (lipid-adjusted) concentration of cadmium among persons aged 1 year and older was 1.5 µg/L. (cancer.gov)
  • An endophytic bacterium Acinetobacter calcoaceticus Sasm3-enhanced phytoremediation of nitrate-cadmium compound polluted soil by intercropping Sedum alfredii with oilseed rape. (sigmaaldrich.com)
  • In conclusion, the endophytic bacterium Sasm3-inoculated intercropping system not only improved the efficiency of clearing cadmium from soil without obstructing crop production, but also improved the quality of crop. (sigmaaldrich.com)
  • Cadmium is a natural element found in tiny amounts in air, water, soil, and food. (cancer.gov)
  • The microbiological degradation of these compounds produces vinyl chloride under the ground, which in the form of fumes (soil gas) enters the ambient air and water sources. (anses.fr)
  • Improper waste disposal and spills at hazardous waste sites may cause cadmium to leak into nearby water and soil. (winchesterhospital.org)
  • Bromine, Inorganic Compounds. (wiley.com)
  • Biological monitoring can contribute to protecting workers in the workplace, but only as a means of complementing the monitoring of cadmium concentration (and its inorganic compounds) in the air within a workers' breathing zone, the committee said. (europa.eu)
  • Insoluble forms of cadmium are immobile and will deposit and absorb to sediments. (cdc.gov)
  • Cadmium chloride is colorless, odorless and highly soluble in water. (sigmaaldrich.com)
  • The objective of this study was to determine blood and urine cadmium levels of young adults occupationally exposed to cadmium in relation to number of cigarettes smoked and sex. (ilo.org)
  • An increase in blood cadmium without any changes in urine cadmium could be explained by the accumulation of cadmium in tissues. (ilo.org)
  • The national geometric mean blood cadmium level for adults is 0.38 µg/L. A geometric mean blood cadmium level of 1.58 µg/L for New York City smokers has been reported. (cdc.gov)
  • Dispose of nickel-cadmium batteries properly, and do not allow children to play with these batteries. (cancer.gov)
  • Keep nickel-cadmium batteries out of the reach of small children. (winchesterhospital.org)
  • The most common use of cadmium in industry is in the production of nickel-cadmium (Ni-Cd) rechargeable batteries and as a sacrificial corrosion-protection coating for iron and steel. (greenspec.co.uk)
  • Note: NIOSH recommends as part of its carcinogen policy that the 'most protective' respirators be worn for cadmium compounds at any detectable concentration. (cdc.gov)
  • There is no conclusive evidence that cadmium can cause lung cancer, but as a precaution, the United States Environmental Protection Agency has classified cadmium as a probable carcinogen in humans. (winchesterhospital.org)
  • Likewise, due to human toxicity concerns, cadmium is no longer used as a fungicide in the United States. (encyclopedia.com)
  • A nine-year old chronic toxicity study of cadmium in monkeys II. (cdc.gov)
  • In the context of its scientific expertise missions regarding toxicity reference values (TRVs), ANSES today published new values for two contaminants frequently found in the environment - vinyl chloride monomer and cadmium and its compounds. (anses.fr)
  • There is no effective treatment for cadmium toxicity. (winchesterhospital.org)
  • 1981. The effects of sodium chromate and carbon tetrachloride on the urinary excretion and tissue distribution of cadmium in cadmium-pretreated rats. (cdc.gov)