Chemical groups containing the covalent sulfur bonds -S-. The sulfur atom can be bound to inorganic or organic moieties.
Elements with partially filled d orbitals. They constitute groups 3-12 of the periodic table of elements.
Inorganic or organic compounds that contain sulfur as an integral part of the molecule.
One of the Liliaceae used as a spice (SPICES) and traditional remedy. It contains alliin lyase and alliin, which is converted by alliin lyase to allicin, the pungent ingredient responsible for the aroma of fresh cut garlic.
Hot springs on the ocean floor. They are commonly found near volcanically active places such as mid-oceanic ridges.
Organic compounds that have the general formula R-SO-R. They are obtained by oxidation of mercaptans (analogous to the ketones). (From Hackh's Chemical Dictionary, 4th ed)
Organic and inorganic compounds that contain iron as an integral part of the molecule.
Any solid objects moving in interplanetary space that are smaller than a planet or asteroid but larger than a molecule. Meteorites are any meteoroid that has fallen to a planetary surface. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Any of the monobasic inorganic or organic acids of sulfur with the general formula RSO(OH). (From McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine.
Inorganic salts of sulfuric acid.
A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.
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)
The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. (From Merck Index, 11th ed)
A multifunctional pyridoxal phosphate enzyme. In the final step in the biosynthesis of cysteine it catalyzes the cleavage of cystathionine to yield cysteine, ammonia, and 2-ketobutyrate. EC
A multifunctional pyridoxal phosphate enzyme. In the second stage of cysteine biosynthesis it catalyzes the reaction of homocysteine with serine to form cystathionine with the elimination of water. Deficiency of this enzyme leads to HYPERHOMOCYSTEINEMIA and HOMOCYSTINURIA. EC
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.
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.
A strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials.

Allyl-containing sulfides in garlic increase uncoupling protein content in brown adipose tissue, and noradrenaline and adrenaline secretion in rats. (1/1610)

The effects of garlic supplementation on triglyceride metabolism were investigated by measurements of the degree of thermogenesis in interscapular brown adipose tissue (IBAT), and noradrenaline and adrenaline secretion in rats fed two types of dietary fat. In Experiment 1, rats were given isoenergetic high-fat diets containing either shortening or lard with or without garlic powder supplementation (8 g/kg of diet). After 28 d feeding, body weight, plasma triglyceride levels and the weights of perirenal adipose tissue and epididymal fat pad were significantly lower in rats fed diets supplemented with garlic powder than in those fed diets without garlic powder. The content of mitochondrial protein and uncoupling protein (UCP) in IBAT, and urinary noradrenaline and adrenaline excretion were significantly greater in rats fed a lard diet with garlic powder than in those fed the same diet without garlic. Other than adrenaline secretion, differences due to garlic were significant in rats fed shortening, also. In Experiment 2, the effects of various allyl-containing sulfides present in garlic on noradrenaline and adrenaline secretion were evaluated. Administration of diallyldisulfide, diallyltrisulfide and alliin, organosulfur compounds present in garlic, significantly increased plasma noradrenaline and adrenaline concentrations, whereas the administration of disulfides without allyl residues, diallylmonosulfide and S-allyl-L-cysteine did not increase adrenaline secretion. These results suggest that in rats, allyl-containing sulfides in garlic enhance thermogenesis by increasing UCP content in IBAT, and noradrenaline and adrenaline secretion.  (+info)

Nitrate removal in closed-system aquaculture by columnar denitrification. (2/1610)

The columnar denitrification method of nitrate-nitrogen removal from high-density, closed system, salmonid aquaculture was investigated and found to be feasible. However, adequate chemical monitoring was found to be necessary for the optimization and quality control of this method. When methanol-carbon was not balanced with inlet nitrate-nitrogen, the column effluent became unsatisfactory for closed-system fish culture due to the presence of excess amounts of nitrite, ammonia, sulfide, and dissolved organic carbon. Sulfide production was also influenced by column maturity and residence time. Methane-carbon was found to be unsatisfactory as an exogenous carbon source. Endogenous carbon could not support high removal efficiencies. Freshwater columns adpated readily to an artificial seawater with a salinity of 18% without observable inhibition. Scanning electron microscopy revealed that the bacterial flora was mainly rod forms with the Peritricha (protozoa) dominating as the primary consumers. Denitrifying bacteria isolated from freshwater columns were tentatively identified as species of Pseudomonas and Alcaligenes. A pilot plant column was found to behave in a manner similar to the laboratory columns except that nitrite production was never observed.  (+info)

Dense populations of a giant sulfur bacterium in Namibian shelf sediments. (3/1610)

A previously unknown giant sulfur bacterium is abundant in sediments underlying the oxygen minimum zone of the Benguela Current upwelling system. The bacterium has a spherical cell that exceeds by up to 100-fold the biovolume of the largest known prokaryotes. On the basis of 16S ribosomal DNA sequence data, these bacteria are closely related to the marine filamentous sulfur bacteria Thioploca, abundant in the upwelling area off Chile and Peru. Similar to Thioploca, the giant bacteria oxidize sulfide with nitrate that is accumulated to +info)

Tetradecylthioacetic acid (a 3-thia fatty acid) impairs secretion of oleic acid-induced triacylglycerol-rich lipoproteins in CaCo-2 cells. (4/1610)

The fatty acid analogue tetradecylthioacetic acid (TTA) has previously been shown to decrease triacylglycerol secretion in CaCo-2 cells (Gedde-Dahl et al., J. Lipid Res. 36 (1995) 535-543). The present study was designed to further elucidate the effect of TTA on lipoprotein production in CaCo-2 cells. TTA did not affect oleic acid-induced triacylglycerol synthesis, but it significantly decreased secretion of newly synthesized triacylglycerol when compared to cells incubated with oleic acid alone or oleic acid in combination with palmitic acid. In contrast, pulse-chase experiments showed no difference in the amount of labeled triacylglycerol secreted from cells exposed to either fatty acid combination during the chase period, indicating that TTA did not affect the secretory process in general. Cells incubated with TTA alone secreted triacylglycerol present at 1.025+info)

Thiolated recombinant human tumor necrosis factor-alpha protects against Plasmodium berghei K173-induced experimental cerebral malaria in mice. (5/1610)

The introduction of reactive thiol groups in recombinant human tumor necrosis factor (TNF) alpha (rhTNF-alpha) by the reagent succinimidyl-S-acetylthioacetate resulted in the formation of a chemically stabilized rhTNF-alpha trimer (rhTNFalpha-AT; as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis). rhTNFalpha-AT showed a substantially enhanced protective efficacy against the development of experimental murine cerebral malaria (ECM) after intravenous injection compared to the protective efficacy of nonmodified rhTNF-alpha. Administration of thiolated rhTNF-alpha with protected thiol groups (rhTNFalpha-ATA; no stabilized trimers in vitro) exhibited the same protective efficacy against ECM, while in vitro bioactivity was reduced. Parasitemia was significantly suppressed in rhTNF-treated mice that were protected against ECM but not in treated mice that developed ECM. Protection against ECM was not related to increased concentrations in plasma of soluble TNF receptor 1 and 2 directly after injection or at the moment of development of ECM in nontreated mice. The results indicate that thiolation of rhTNF-alpha leads to the formation of stable trimers with increased potential in vivo.  (+info)

A fission yeast gene for mitochondrial sulfide oxidation. (6/1610)

A cadmium-hypersensitive mutant of the fission yeast Schizosaccharomyces pombe was found to accumulate abnormally high levels of sulfide. The gene required for normal regulation of sulfide levels, hmt2(+), was cloned by complementation of the cadmium-hypersensitive phenotype of the mutant. Cell fractionation and immunocytochemistry indicated that HMT2 protein is localized to mitochondria. Sequence analysis revealed homology between HMT2 and sulfide dehydrogenases from photosynthetic bacteria. HMT2 protein, produced in and purified from Escherichia coli, was soluble, bound FAD, and catalyzed the reduction of quinone (coenzyme Q2) by sulfide. HMT2 activity was also detected in isolated fission yeast mitochondria. We propose that HMT2 functions as a sulfide:quinone oxidoreductase. Homologous enzymes may be widespread in higher organisms, as sulfide-oxidizing activities have been described previously in animal mitochondria, and genes of unknown function, but with similarity to hmt2(+), are present in the genomes of flies, worms, rats, mice, and humans.  (+info)

Health aspects of the curing of synthetic rubbers. (7/1610)

A commonly used tread rubber formulation was cured in the laboratory under conditions simulating vulcanization in the Bag-O-Matic press. Volatile emissions were collected on charcoal and analyzed by combined GC-mass spectrometry. The compounds identified were either contaminants present in the raw material or reaction products. Some of these compounds were also identified in charcoal tube samples collected in the atmosphere of the industrial operations. Estimates based on the loss of weight of rubber during curing were used to predict airborne concentrations and compared to the concentrations actually found. The literature of the toxicity of raw materials and effluents was reviewed, and no acute or chronic toxicological effects would be anticipated. Information concerning potential carcinogenicity was not available and could not be evaluated.  (+info)

Novel derivatives of phenethyl-5-bromopyridylthiourea and dihydroalkoxybenzyloxopyrimidine are dual-function spermicides with potent anti-human immunodeficiency virus activity. (8/1610)

Sexually active women represent the fastest growing HIV/AIDS (human immunodeficiency virus/acquired immunodeficiency syndrome) risk group. In an effort to develop a vaginal microbicidal contraceptive potentially capable of preventing HIV transmission as well as providing fertility control, we have synthesized novel non-nucleoside inhibitors (NNIs) of HIV-1 reverse transcriptase (RT) and examined them for dual-function anti-HIV and spermicidal activity. Structure-based drug design by use of a computer docking procedure for the NNI binding pocket generated from nine RT-NNI crystal structures led to the synthesis of three novel NNIs: N-[2-(2, 5-dimethoxyphenethyl)]-N'-[2-(5-bromopyridyl)]-thiourea (D-PBT); N-[2-(2-fluorophenethyl)]-N'-[2-(5-bromopyridyl)]-thiourea (F-PBT); and 5-isopropyl-2-[(methylthiomethyl)thio]-6-(benzyl)-pyrimidin-4-(1H)-on e (S-DABO). The anti-HIV activity of these NNIs was compared with that of trovirdine and virucidal/spermicide, nonoxynol-9 (N-9), by measuring viral RT activity and p24 antigen production as markers of viral replication using HTLVIIIB-infected human peripheral blood mononuclear cells (PBMCs). The effects on sperm motion kinematics and sperm membrane integrity were examined by computer-assisted sperm analysis and by confocal laser scanning microscopy (CLSM), respectively. The growth-inhibitory effects of NNI versus N-9 against normal human ectocervical and endocervical epithelial cells were tested using the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide) assay. All three NNIs were potent inhibitors of purified recombinant HIV RT and abrogated HIV replication in PBMCs at nanomolar concentrations (IC50 < 1 nM) when compared with N-9 or trovirdine (IC50 values of 2.2 microM and 0.007 microM, respectively). Two NNIs, F-PBT and S-DABO, also exhibited concentration- and time-dependent spermicidal activity. The drug concentration required to inhibit sperm motility by 50% (EC50 values) for the lead compound F-PBT versus N-9 was 147 microM and 81 microM, respectively. Sperm-immobilizing activity induced by F-PBT and S-DABO was rapid (t1/2 = 7-13 min) and irreversible. Unlike that of N-9, spermicidal activity of F-PBT and S-DABO was not accompanied by loss of acrosomal membrane as detected by fluorescent-lectin binding assay and CLSM. Whereas N-9 was cytotoxic to normal human ectocervical and endocervical cells at spermicidal doses, both F-PBT and S-DABO were selectively spermicidal. We conclude that as potent anti-HIV agents with spermicidal activity and reduced cytotoxicity, F-PBT and S-DABO show unique clinical potential to become the active ingredients of a vaginal contraceptive for women who are at high risk for acquiring HIV by heterosexual vaginal transmission.  (+info)

Global Dimethyl sulphide market is expected to reach USD XXXX billion in 2022. Global Dimethyl sulphide market is anticipated to grow at a CAGR of XX.XX % between 2017 and 2022. The Dimethyl sulphide market report covers forecast and analysis for the Dimethyl sulphide market on a global and regional level. The study provides Dimethyl sulphide markets historic data of 2014, 2015 and 2016 along with a forecast from 2017 to 2022 based on Dimethyl sulphide market revenue (USD billion). The Dimethyl sulphide market study includes drivers and restraints of the Dimethyl sulphide market along with the impact they have on the demand over the forecast period. Additionally, the Dimethyl sulphide industry report includes the study of opportunities available in the Dimethyl sulphide market on a global level.. The objective of the Report:. Basically, the report focuses on Dimethyl sulphide in the global market. Report on Dimethyl sulphide market also briefs about the factors altering Dimethyl sulphide market ...
Dimethyl trisulfide (DMTS) is an organic chemical compound and the simplest organic trisulfide. It is a flammable liquid with a foul odor, which is detectable at levels as low as 1 part per trillion. Dimethyl trisulfide has been found in volatiles emitted from cooked onion, leek and other Allium species, from broccoli and cabbage, as well as from Limburger cheese, and is involved in the unpalatable aroma of aged beer and stale Japanese sake. It is a decomposition product of bacterial decomposition, including the early stages of human decomposition, and is a major attractant for blowflies looking for hosts. Dimethyl trisulfide along with dimethyl sulfide and dimethyl disulfide have been confirmed as volatile compounds given off by the fly-attracting plant known as dead-horse arum (Helicodiceros muscivorus). These flies are attracted to the odor of fetid meat and help pollinate this plant. DMTS contributes to the foul odor given off by the fungus Phallus impudicus, also known as the common ...
Looking for Sulfide Mineral? Find out information about Sulfide Mineral. A mineral compound characterized by the linkage of sulfur with a metal or semimetal. any of various minerals comprising a class and consisting of sulfur... Explanation of Sulfide Mineral
Buy sodium sulfide from marketplace. Also knows as sodium sulfide (na2s),disodium monosulfide,na2s,disodium sulphide,sodium sulfide (van),hsdb 772,sodium sulfide\\, anhydrous (dot),ai3-09342,sodium sulfide\\, 90+%\\, pure,sodum sulfuret,na2-s
Business Directory for Sodium Sulfide Suppliers in Delhi - Get contact details of Sodium Sulfide Manufacturers, Wholesale Sodium Sulfide Exporters, Best Sodium Sulfide Traders & Distributors Across the Delhi.
Tetradecylthioacetic acid (TTA) is a synthetic fatty acid used as a nutritional supplement. TTA acts as a peroxisome proliferator-activated receptor alpha (PPARα) agonist and increases mitochondrial fatty acid oxidation in vitro.[1] In rodent studies, TTA has been reported to have other activities such as reducing inflammation[2] and preventing high fat diet induced adiposity and insulin resistance.[3] In human clinical study, there have been mixed observations in preliminary studies. One Phase I study showed no significant changes in the blood lipids or free fatty acids[4] and another showed that TTA attenuates dyslipidemia in patients with type 2 diabetes mellitus.[1] ...
0027] Suitable organosilane polysulfides include, but are not limited to, 3,3-bis(trimethoxysilylpropyl)disulfide, 3,3-bis(triethoxysilylpropyl)disulfide, 3,3-bis(triethoxysilylpropyl)tetrasulfide, 3,3-bis(triethoxysilylpropyl)octasulfide, 3,3-bis(trimethoxysilylpropyl)tetrasulfide, 2,2-bis(triethoxysilylethyl)tetrasulfide, 3,3-bis(trimethoxysilylpropyl)trisulfide, 3,3-bis(triethoxysilylpropyl)trisulfide, 3,3-bis(tributoxysilylpropyl)disulfide, 3,3-bis(trimethoxysilylpropyl)hexasulfide, 3,3-bis(trimethoxysilylpropyl)octasulfide, 3,3-bis(trioctoxysilylpropyl)tetrasulfide, 3,3-bis(trihexoxysilylpropyl)disulfide, 3,3-ibis(tri-2-ethylhexoxysilylpropyl)trisulfide, 3,3-bis(triisooctoxysilylpropyl)tetrasulfide, 3,3-bis(tri-t-butoxysilylpropyl)disulfide, 2,2-bis(methoxydiethoxysilylethyl)tetrasulfide, 2,2-bis(tripropoxysilylethyl)pentasulfide, 3,3-bis(tricycloneoxysilylpropyl)tetrasulfide, 3,3-bis(tricyclopentoxysilylpropyl)trisulfide, ...
A facile synthesis of structurally diverse 1-chloro-2,2,2-trifluoroethyl sulfides from readily available 1-bromo-1-chloro-2,2,2-trifluoroethane (Halothane®) and various aliphatic and aromatic thiols in the presence of sodium dithionite/sodium bicarbonate is described. The synthetic utility of the prepared sulfides is illustrated by the synthesis of biologically potent heterocycles and by their electrophilic reactions with thiophene.. ...
The thermodynamics for the first electron transfer step for sulfide and oxygen indicates that the reaction is unfavorable as unstable superoxide and bisulfide radical ions would need to be produced. However, a two electron transfer is favorable as stable S(0) and peroxide would be formed, but the partially filled orbitals in oxygen that accept electrons prevent rapid kinetics. Abiotic sulfide oxidation kinetics improve when reduced iron and/or manganese are oxidized by oxygen to form oxidized metals which in turn oxidize sulfide. Biological sulfur oxidation relies on enzymes that have evolved to overcome these kinetic constraints to affect rapid sulfide oxidation. Here we review the available thermodynamic and kinetic data for H2S and HS• as well as O2, reactive oxygen species, nitrate, nitrite and NOx species. We also present new kinetic data for abiotic sulfide oxidation with oxygen in trace metal clean solutions that constrain abiotic rates of sulfide oxidation in metal free solution and agree with
Nanoscopic investigation of the self-assembly process of dialkyl disulfides and dialkyl sulfides on Au(111). Variable energy x-ray photoemission studies of alkylsilane based monolayers on gold
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.
Sodium sulfide nonahydrate, ACS, 98.0% min, Alfa Aesar™ 250g Sodium sulfide nonahydrate, ACS, 98.0% min, Alfa Aesar™ Inorganic Sodium Compounds
XIAO-HU LI*, JIAN-QIANG WANG, FENG-YOU CHU, HAO WANG, ZHENG-GANG LI, XING YU, WEI WANG Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, 36 Baochubei Road, Hangzhou 310012, P.R. China (Received December 18, 2016; Accepted July 10, 2017) Abstract: Considerable Cu isotopic fractionation occurs during the formation of mineral deposits and the oxidative weathering processes of modern seafloor hydrothermal sulfides. This report is the first to describe Cu isotopic compositions of Cu-rich and Zn-rich sulfides, and their oxidation products collected from hydrothermal fields along the South Mid-Atlantic Ridge (13-15°S). Results show that the δ65Cu values of these sulfides and their oxidation products are -0.58‰ to +1.36‰, with an average value of 65Cu=+0.30±1.02‰ (n=17, 2 sd). Cu-rich sulfides have slightly lighter Cu isotope compositions, with an average δ65Cu=+0.37±0.16‰ (n=5, 2 sd), whereas Zn-rich sulfides are enriched in heavy Cu ...
Studies on Biological Methylation; A Precursor of the Dimethyl Sulphide Evolved by Polysiphonia Fastigiata; dimethyl-2-carboxyethylsulphonium Hydroxide and Its Salts
mineral - Sulfide Minerals - The sulfides include the majority of ore minerals from which metals are obtained. Thus, lead sulfide forms the mineral galena; silver sulfide, argentite; and zinc sulfide, sphalerite. These minerals are often found together as ores.Two important sulfides of arsenic are realgar and orpiment. Antimony sulfide is called stibnite. Antimony is alloyed with lead for casting the type metal used in printing. The mineral cinnabar is a sulfide of mercury. Molybdenum, a metal…
Lookup HS Codes for China vi 28.13.90 Other non-metallic sulfides, phosphorus trisulfide Goods. Avalara LandedCosts helps determine your duty rates and other import taxes for China.
TY - JOUR. T1 - Fungal pretreatment of sulfides in refractory gold ores. AU - Ofori-Sarpong, G.. AU - Osseo-Asare, Kwadwo Asare. AU - Tien, Ming. PY - 2011/5/1. Y1 - 2011/5/1. N2 - This study assessed the capability of the fungus, Phanerochaete chrysosporium, to decompose pyrite, arsenopyrite and a sulfide-containing flotation concentrate in an effort to develop a microbial process for pretreating refractory gold ores. The extent of biotransformation was monitored by analyzing for iron, sulfur and arsenic in incubation solutions, and for sulfide sulfur in the residual solids. The results were then expressed as percentages of the initial weights. For arsenopyrite, 1.5 wt.%, 7.2 wt.% and 10.3 wt.% of iron, arsenic and sulfur respectively were present as soluble constituents in the incubation solution within 21 days of fungal treatment, whereas for pyrite, there was 1.2 wt.% iron and 6.0 wt.% sulfur. For the same processing period in the case of the flotation concentrate, 1.8 wt.%, 6.1 wt.% and ...
Sulfide-based luminescent materials have attracted a lot of attention for a wide range of photo-, cathodo- and electroluminescent applications. Upon doping with Ce3+ and Eu2+, the luminescence can be varied over the entire visible region by appropriately choosing the composition of the sulfide host. Main application areas are flat panel displays based on thin film electroluminescence, field emission displays and ZnS-based powder electroluminescence for backlights. For these applications, special attention is given to BaAl2S4:Eu, ZnS:Mn and ZnS:Cu. Recently, sulfide materials have regained interest due to their ability (in contrast to oxide materials) to provide a broad band, Eu2+-based red emission for use as a color conversion material in white-light emitting diodes (LEDs). The potential application of rare-earth doped binary alkaline-earth sulfides, like CaS and SrS, thiogallates, thioaluminates and thiosilicates as conversion phosphors is discussed. Finally, this review concludes with the size
Schönberger, S., Jagdhuber, C., Ascherl, L., Evangelisti, C., Klapötke, T. M. and Karaghiosoff, K. (2014), New Acyclic Neutral Phosphorus Sulfides and Sulfide Oxides. Z. anorg. allg. Chem., 640: 68-75. doi: 10.1002/zaac.201300419 ...
TY - JOUR. T1 - Catalysis by Mo-based Monometallic and Bimetallic Carbides and Sulfides for Simultaneous Hydrodesulfurization, Hydrodenitrogenation, and C-C Hydrogenolysis. AU - Song, Chunshan. AU - Wang, Weilin. AU - Wei, Boli. AU - Oyama, S. Ted. AU - Schwartz, Viviane. PY - 2003/3. Y1 - 2003/3. N2 - Molybdenum based sulfide catalysts are widely used in hydroprocessing of petroleum fractions in refining industry. Multi-probe molecular reactions for simultaneous HDS, HDN, and C-C hydrogenolysis over Mo-based monometallic and bimetallic carbide and sulfide catalysts, in conjunction with the work on single-probe molecular reactions were presented. A multi-component model-feedstock was used to test catalytic functions. These reactions were precisely those involved in the conversion and processing of heavy hydrocarbon resources such as heavy oil, coal, and other residual materials. The multi-component feed includes 4-(1-naphthylmethyl)bibenzyl, dibenzothiophene, quinoline, pyrene, and eicosane. ...
Dioxygenase-catalysed trioxygenation of alkyl phenyl sulfides and alkyl benzenes yields enantiopure cis-dihydrodiol sulfoxides and triols respectively; naphthalene cis-dihydrodiol dehydrogenase-catalysed aromatisation of these diastereoisomers gives enantiopure catechols of either configuration.. ...
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Wang, K, OReilly, S, Honda, M et al 2010, Co-rich sulfides in mantle peridotites from Penghu Islands, Taiwan: Footprints of Proterozoic mantle plumes under the Cathaysia Block, Journal of Asian Earth Sciences, vol. 37, no. 3, pp. 229-245. ...
Dive into the research topics of Transport Properties of Bi,sub,2,/sub,S,sub,3,/sub, and the Ternary Bismuth Sulfides KBi,sub,6.33,/sub,S,sub,10,/sub, and K,sub,2,/sub,Bi,sub,8,/sub,S,sub,13,/sub,. Together they form a unique fingerprint. ...
sodium sulfide: see also record for sodium bisulfide; actisoufre is the sodium sulfide component of sulfur-containing thermal springs which is also found in Saccharomyces cerevisiae
The 2013 Import and Export Market for Sodium Sulfide in the Middle East The 2013 Import and Export Market for Sodium Sulfide in the Middle - Market research report and industry analysis - 7497510
Sodium Sulfide Spot Test Definition - A sodium sulfide spot test is a localized chemical test to detect any concentration of lead in a coating...
A mixed kinetics dump leaching model for ores containing a variety of copper sulfide minerals / by B.W. Madsen and M.E. Wadsworth ...
Hesketh, A.H. and Broadhurst, J.L. and Bryan, C.G. and van Hille, R.P. and Harrison, S.T.L. 2010. Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes. Hydrometallurgy. 104 (3-4): pp. 459-464 ...
Severson, DL; Hafstad, Anne Dragøy; Khalid, Ahmed Murtaz; Clarke, Kieran; Hagve, Martin; Berge, Rolf; Lund, trine; Larsen, Terje; Aasum, ...
A process for biooxidation of sulfides in a heap of mineral ores by freeing precious metals dispersed or occluded within said ores as pyritic or arsenopyritic sulfides and the like; the process comprises forming particulates from ore particles with an inoculate comprising bacteria capable of attacking, by biooxidation, sulfides and/or elemental sulfur in said ore particles; from these particulates a heap is constructed; and the biooxidation takes place in such heap by adding to or dispersing within the heap a leaching solution, circulating the leaching solution within the heap and recovering the precious metal values from the heap; recovery may be accomplished with a cyanide, thiourea, or a thiosulfate lixiviant.
Frank: Thank you for the comment. It is hard to answer your question because GTAC has not been very forthcoming about what its plans actually are. There are two end-members of a range of possibilities. At one end, it is possible that everything GTAC has said is true, that it has not looked at the cores, that it has no idea what is in they Tyler shale, and that this is an iron mine pure and simple. In that case the mine will uncover pyrite and apatite in the process of recovering the iron, which is a problem that has not been discussed at all by either by GTAC or the legislators. The whole rationale for creating separate laws to cover the mining of iron oxides is that iron oxide mining will not uncover sulfides. The presence of sulfides in the Tyler undermines this rationale. At the other extreme is the possibility that GTAC knows exactly what is in the Tyler and is hiding it, either to prevent the issue of sulfides being raised during debate over a bill that creates an artificial distinction ...
Frank: Thank you for the comment. It is hard to answer your question because GTAC has not been very forthcoming about what its plans actually are. There are two end-members of a range of possibilities. At one end, it is possible that everything GTAC has said is true, that it has not looked at the cores, that it has no idea what is in they Tyler shale, and that this is an iron mine pure and simple. In that case the mine will uncover pyrite and apatite in the process of recovering the iron, which is a problem that has not been discussed at all by either by GTAC or the legislators. The whole rationale for creating separate laws to cover the mining of iron oxides is that iron oxide mining will not uncover sulfides. The presence of sulfides in the Tyler undermines this rationale. At the other extreme is the possibility that GTAC knows exactly what is in the Tyler and is hiding it, either to prevent the issue of sulfides being raised during debate over a bill that creates an artificial distinction ...
The six families we will investigate include the sulfides, sulfates, oxides, halides, carbonates, borates, and silicates. Sulfides and sulfates all have sulfur in the anion. For example galena is a sulfide and its composition is PbS. The sulfides mainly are metallic. The sulfates include the radical SO4 and include minerals that are nonmetallic. These can include gypsum. Some families have an anion that is related to oxygen. Oxides contain a anion that is usually a metal in combination with oxygen. For example, hematite is iron plus oxygen (Fe2O3). Carbonates include the CO3 radical and includes minerals like calcite. Borates contain the BO3 group and include minerals like borax and ulexite. Sulfates also have oxygen within its radical.. Silicates form the largest chemical class among the minerals. They contain various elements in different combination like sodium, potassium, calcium, magnesium, aluminum, and iron in combination with silicon and oxygen. They have very complex chemical structures. ...
Mineral Mineral Sulfides: This important class includes most of the ore minerals. The similar but rarer sulfarsenides are grouped here as well. Sulfide minerals consist of one or more metals combined with sulfur; sulfarsenides contain arsenic replacing some of the sulfur. Sulfides are generally opaque and exhibit distinguishing colours and streaks. (Streak is the colour of a Chat Online ...
lments of pyrite fes_Mineralogy of Sulfides ElementsMineralogy of Sulfides ... a general formula A m T n X p and in which the common elements are A = Ag ... along the c-axis direction in pyrite (FeS 2 ...Iron disul
The study procedure was based on OECD Guideline No. 218 (2004). The batch of TPS 32 (polysulfides, di-tert-dodecyl) tested was a clear yellow liquid. Based on the results of the range-finding test, a final test was performed with concentrations ranging from 100 to 1000 mg/kg d.w., increasing with a factor of 1.8. Furthermore, a blank-control and a solvent-control were included. The test concentrations were prepared by mixing spiked sand, after evaporation of the solvent, with sediment. A bulk amount was prepared and distributed over the replicates. In total 80 larvae per group (20 per replicate/4 replicates) were exposed to the controls (blank and solvent-control) and theTPS 32 (polysulfides, di-tert-dodecyl) concentrations. The total test period was 28 days. On days 0 and 28 samples for analysis were taken from overlying water, pore water and sediment from the concentrations. The results of analysis at the start and at the end of the final test showed that the measured concentrations in ...
The potential toxicity of Di-tert-butyl polysulfides (TPS 44) was evaluated following daily oral administration (gavage) to rats for4 weeks. On completion of the treatment period, designated animals were held fora 2-week treatment-free period in order to evaluate the reversibility of any findings. The study was performed according to OECD(No. 407, 03 October 2008) and Commission Regulation (EC) (No. 440/2008, B.7, 30 May 2008)guidelines and in compliance with the principles of Good Laboratory Practice Regulations. One group of ten male and ten female Sprague-Dawley rats received Di-tert-butyl polysulfides (TPS 44) daily by gavage at dose-level of 300 mg/kg/day for 4 weeks. Two other groups of five males and five females received TPS 44 at 33 or 100 mg/kg/day under the same experimental conditions. A further group of ten males and ten females received the vehicle alone (0.5% carboxymethylcellulose in purified water) under the same experimental conditions, and acted as a control group.The dosage ...
73296-91-0 - Phenol, 4-((2,4-dinitrophenyl)amino)-, reaction products with sodium sulfide (Na2(Sx)), oxidized - Searchable synonyms, formulas, resource links, and other chemical information.
Send Inquiry to Goodtime Clock (yantai) Co. Ltd. - We are leading Manufacturer of Sodium Sulfide, Clock, Watches, barite powder coating, thermosetting powder coating from YANTAI China.
The Global Industry Report North America Sodium Sulfide Market by Manufacturers, Countries, Type and Application, Forecast to 2022 Market - by Manufacturers, States, Countries, Regions (Province), Type and Application, 2017 Forecast to 2022,Analysis, Regional Outlook, Share, Growth By Global Info Reports.
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A method for treating a heavy metal-containing liquid, such as a wastewater stream, oil for recycling, or other metal-bearing liquid, with a trithiocarbonate, particularly an alkali metal trithiocarbonate, such as sodium trithiocarbonate, to precipitate the metals as insoluble sulfides. The precipitated metal sulfides are recovered as a low volume sludge, which can be processed through standard metallurgical techniques to yield the metals in economically useful forms. Among the most unexpected results produced by this method is the lowering of the selenium content in a naturally occurring body of water from 1.0 ppm to 0.0015 ppm.
Results Exhaled acetone increased with higher expiratory flow rate (805, 838, 898 ppb, p=0.02). Levels of methanol (206 vs 179 ppb, p,0.01), acetaldehyde (26 vs 22 ppb, p,0.01), ethanol (410 vs 208 ppb, p=0.01) and dimethyl sulphide (113 vs 103 ncps, p,0.01) fell significantly following 30s hyperventilation. After 30 second breathold levels of methanol (206 vs 217 ppb, p=0.02), acetone (805 vs 869 ppb, p,0.01), isoprene (348 vs 390 ppb, p=0.02) and dimethyl sulphide (113 vs 136 ncps, p=0.02) increased significantly. Variation in respiratory parameters did not significantly alters the level of acetonitrile, propanol and butyric acid within the breath of healthy subjects. ...
The mineral pyrite is known as fools gold. Pyrite is an abundant sulfide mineral. Pyrite is a protective stone, shielding the user from negative energy of all kinds. Pyrite blocks positive energies to be getting away from the person wearing or keeping it. Carry Pyrite with you to protect yourself from both environme
The mineral pyrite, or iron pyrite, also known as fools gold, is an iron sulfide with the chemical formula FeS 2 (iron(II) disulfide) Pyrite is considered the most common of the sulfide minerals Pyrites metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fools gold. Saber más. ...
Gratonite is a rare lead sulfide mineral. It forms nice crystals that can be arranged into rosette-like clusters with projecting rhombohedral terminations. Clusters can be attractive and good specimens command large prices, mostly because of the rarity of the mineral. Gratonite is a sulfosalt, a segment of sulfides where the arsenic acts more like a metal than a non-metal and occupies a position where it is bonded to sulfurs. Also, Gratonite is the most common mineral whose symmetry is in the Trigonal Pyramidal Class. ...
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Н.В. Изарова, О.А. Холдеева, М.Н. Соколов, В.П. Федин, Исследование каталитических свойств гигантского полиоксомолибдата в реакциях селективного окисления тиоэфиров, Известия АН, Сер. хим. 2009, № 1, 134-137. (N. V. Izarova, O. A. Kholdeeva, M. N. Sokolov, V. P. Fedin, Catalytic properties of the macromolecular polyoxomolybdate cluster in selective oxidation of sulfides, Russian Chemical Bulletin Int. Ed., 2009, 58, N 1, 134-137 ...
Diallyl sulfide (DAS), diallyl disulfide (DADS) and diallyl trisulfide (DATS) are major oil-soluble organosulfur compounds of garlic responsible for most of its pharmacological effects. The present study investigated the influence of repeated intraperitoneally (ip) administration of DAS, DADS and DATS on the total level of sulfane sulfur, bound sulfur (S-sulfhydration) and hydrogen sulfide (H2S) and on the activity of enzymes, which catalyze sulfane sulfur formation and transfer from a donor to an acceptor in the normal mouse kidney, i.e., γ-cystathionase (CSE) and rhodanese (TST). The activity of aldehyde dehydrogenase (ALDH), which is a redox-sensitive protein, containing an -SH group in its catalytic center, was also determined. The obtained results indicated that all tested compounds significantly increased the activity of TST. Moreover, DADS and DATS increased the total sulfane sulfur level and CSE activity in the normal mouse kidney. ALDH activity was inhibited in the kidney after DATS
There are comments on PubPeer for publication: Diallyl trisulfide (DATS) abrogates arsenic induced testicular oxidative stress in rats (2014)
US EPA PC Code ); 006901 (US EPA PC Code Text ); 12044-79-0 (CAS number); 12044790; 12044790 (CAS number without hyphens); 12344682; 12612214; 1303-33-9 (CAS number); 1303-34-0 (CAS number); 1303339; 1303339 (CAS number without hyphens); 1303340; 1303340 (CAS number without hyphens); 56320220; Arsenic disulfide (CAS 56320-22-0); Arsenic sesquisulfide; Arsenic sesquisulfide (CAS 1303-33-9); Arsenic sulphide; Arsenic trisulfide; Arsenic trisulfide (As2S3); Arsenic trisulfide (CAS 1303-33-9); Arsenic trisulphide; Arsenic yellow; Arsenic yellow (CAS 1303-33-9); Arsenictrisulfide; Arsenone S; Arsenone S (CAS 12344-68-2); Diarsenic pentasulfide; Diarsenic pentasulfide (CAS 1303-34-0); Diarsenic tetrasulfide; Diarsenic tetrasulfide (CAS 12344-68-2); Diarsenic trisulfide; Diarsenic trisulfide (CAS 1303-33-9); Thioxoarsino; Thioxoarsino (CAS 12044-79-0 ...
Epigenetic upregulation of metallothionein 2A by diallyl trisulfide enhances chemosensitivity of human gastric cancer cells to docetaxel.
China Sodium Hydrosulfide supplier, Ammonium Thiocyanate, Sodium Sulfide Manufacturers/ Suppliers - Qixian County Dongfang Chemical Co., Ltd.
Good-Rite® Sodium Hydrosulfide (NaSH) is a clear, aqueous solution that is used as a depilotory (de-hairing) agent in the tanning industry.
China Sodium Sulphide Red Flake (20ppm/30ppm/1500ppm) 1313-82-2, Find details about China Sodium Sulphide, Sodium Sulphide 60 Red Flake from Sodium Sulphide Red Flake (20ppm/30ppm/1500ppm) 1313-82-2 - Zouping Changshan Zefeng Fertilizer Co., Ltd.
Hydrogen sulfide (H2S) is an endogenous gasotransmitter in human physiology and inflammatory disease, however, with limited knowledge of how signal transduction pathways are involved in immune cells. To examine the effects of sulfide on relevant intracellular signaling in human peripheral blood mononuclear cells (PBMCs), we stimulated healthy donor PBMCs with sodium hydrosulfide (NaHS, 1-1000 μM) to mimic H2S stimulation, and analyzed phosphorylation of p38 mitogen activated protein kinase (MAPK) (pT180/pY182), NF-κB p65 (pS529), Akt (pS473) and CREB/ATF1 (pS133/pS63) with flow and mass cytometry. In contrast to transient effects in subsets of lymphocytes, classical monocytes demonstrated sustained phosphorylation of p38, Akt and CREB/ATF1. NaHS induced calcium dependent phosphorylation of p38, Akt and CREB, but not NF-κB, and the phosphorylation of Akt was partly dependent on p38, indicative of p38-Akt crosstalk. Attenuation of these effects by molecules targeting p38 and Hsp90 indicated ...
In this study, cadmium sulfide nanoparticles (CdS NPs) were prepared, characterized and used as a new adsorbent for simultaneous removal of Pb(II) and Cu(II) ions from aqueous solutions. Using a batch adsorption method, the effects of solution pH, contact time, adsorbent dose, and temperature were studied and optimized. Removal efficiencies, higher than 98% were obtained for both the metal ions at the optimum conditions. The adsorption process was rapid, as equilibrium was achieved within 15 min. The kinetic and isotherm experiment data could be well described with the pseudo-second order kinetic model and the Freundlich isotherm model. The maximum adsorption capacities for Pb(II) and Cu(II) ions were 200 mg/g and 166.7 mg/g, respectively. The thermodynamics of adsorption process such as changes in standard free energy, enthalpy and entropy were also discussed. This study revealed that CdS NPs are effective adsorbent for rapid removal of Pb(II) and Cu(II) ions from aqueous solutions.
The large sulfur isotope fractionations are best explained by a combination of mechanisms. First, a pH-dependent isotope effect can partially explain the observation with DA. It has been shown that the light [sulfur-32 (32S)] and heavy (34S) isotopes of sulfur quickly exchange between the two major sulfide species, dihydrogen sulfide (H2S) and monohydrogen sulfide (HS−), in the pH range of the experiment and reach an isotope equilibrium where H2S is +6‰ enriched relative to HS− (12, 13). Since MSO uses H2S as a substrate as opposed to HS− (14), the relative speciation of sulfide, which is pH dependent [pKa (where Ka is the acid dissociation constant) = 6.89], will have an important consequence on the resulting sulfur isotope enrichment. For example, at pH 7 where H2S accounts for 50% of the sulfide, phototrophic sulfide oxidizers consume H2S and produce elemental sulfur (S0). The H2S is +6‰ enriched in 34S relative to HS− but is only +3‰ enriched relative to the bulk sulfide. Thus, ...
The report presented here provides a detailed and an accurate account of each aspect of the global Liquid Sodium Hydrosulfide market to help players to better face market challenges and gain a competitive edge over other market participants.
UAB Public Health Specialist, Dr. Lisa McCormick said the vapors from sodium hydrosulfide can be toxic and irritating to your respiratory system and can cause burns to your skin and eyes.
Aerobic photooxidation of sulfides with the diacids of meso-tetra(phenyl)porphyrin, H2TPP (acid = CF3COOH, Cl2CHCOOH, HClO4 and H2SO4) under sunlight in acetonitrile gave the corresponding sulfoxides as nearly the exclusive product. The photocatalytic activity of the dications decreased as H4TPP(ClO4)2 ≫ H4TPP(Cl2C
David I. Groves, Trudi Marchant, S. Maske, R. Grant Cawthorn; Compositions of ilmenites in Fe-Ni-Cu sulfides and host rocks, Insizwa, southern Africa; proof of coexisting immiscible sulfide and silicate liquids. Economic Geology ; 81 (3): 725-731. doi: Download citation file:. ...
Page contains details about zinc sulfide/cadmium sulfide nanocrystals . It has composition images, properties, Characterization methods, synthesis, applications and reference articles :
The reaction of H2O2 with thioanisole and p-methoxythioanisole catalysed by lignin peroxidase from Phanerochaete chrysosporium has been studied spectrophotometrically under turnover and single turnover conditions with a stopped-flow apparatus. Pre-formed lignin peroxidase compounds I and II are each able to react with the sulphides to form a sulphide radical cation. The radical cation is then converted into the sulphoxide either by reaction with the medium or by reaction with compound II. This is the first report of a direct reaction between compound II and the substrate radical cation. With thioanisole, significant enantiomeric selectivity and high oxygen incorporation in the sulphoxide are obtained because compound II is preferentially reduced by the enzyme-bound thioanisole radical cation compared with the neutral substrate. By contrast, with p-methoxythioanisole, the data imply formation of an intermediate ternary complex comprising compound II, radical cation and neutral substrate, such ...
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A convenient one-pot approach for the synthesis of aryl sulfides through the coupling of thiols with Grignard reagents in the presence of N-chlorosuccinimide is described. The sulfenylchlorides were formed when thiols were treated with N-chlorosuccinimide, and the resulting sulfenylchlorides were then directly reacted with Grignard reagents to provide aryl sulfides in good to excellent yields under mild reaction conditions. Functional groups including ester, fluoro and chloro are tolerated by the reaction conditions employed. It is important to note that this method has a short reaction time (30 min in total), and represents an alternative approach for the synthesis of aryl sulfides over the existing protocols ...
ABSTRACT: The ecophysiological differences of 4 sibling species of the Capitella capitata species complex from habitats with different sulfide concentrations were studied: Capitella sp. S (small) from a North Sea intertidal flat, living in the upper sediment layer containing low sulfide concentrations (up to 20 µmol l-1); Capitella sp. L (large), sympatric to Capitella sp. S, but living in deeper sediment layers with high sulfide concentrations (up to 350 µmol l-1); Capitella sp. M from the Mediterranean Sea from highly sulfidic sediments (up to 710 µmol l-1) close to shallow hydrothermal vents; and Capitella sp. I from eutrophicated coastal areas of the North Atlantic. Capitella sp. L, Capitella sp. M and Capitella sp. I are significantly more tolerant to anoxia and 760 µmol l-1 sulfide than Capitella sp. S from the upper North Sea sediments. Respiration rates showed that only Capitella sp. S can be characterized as an oxyconformer. The oxygen consumption of Capitella sp. S becomes ...
This topic has 2 study abstracts on Diallyl sulfide indicating that it may have therapeutic value in the treatment of Androgen Deficiency, Cadmium Poisoning, and Testicular Diseases
A low cost, low-temperature processable, highly efficient nickel sulfide counter electrode is demonstrated. Using the tailored, preformed nickel sulfide nanoparticles and electrostatic self-assembly, a novel counter electrode was fabricated that exceeded the efficiency of a conventional Pt-based cell ...
Arsenic trisulfide definition, a yellow or red crystalline substance, As 2 S 3 , occurring in nature as the mineral orpiment, and used as a pigment (kings yellow) and in pyrotechnics. See more.
Press Release issued Dec 1, 2017: Market Research Reports Search Engine (MRRSE) has been serving as an active source to cater intelligent research report to enlighten both readers and investors. This research study titled Sodium Hydrosulfide Market
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 website.
Colorless when pure; isometric; ZnS; mol wt, 97.43; sp gr, 4.102 at 25 degrees C, and ranges from 3.90 to 4.11; Mohs hardness, 3.5 to 4.0; luster, resinous to adamantine; transformation temperature to alpha zinc sulfide, 1,020+ or -5 degrees C; sublimes at 1,180 degrees C or 1,185 degrees C; melting point, 1,850 degrees C (at 150 atm or 15.2 MPa); insoluble in water; and very soluble in acids. Occurs as the mineral sphalerite, which is nearly colorless, white, yellow, red, green, brown, and black; has perfect dodecahedral cleavage; and is soluble in hydrochloric acid. Sphalerite is the principal ore of zinc, a source of cadmium, and a source of sulfur for manufacturing sulfur dioxide, sulfuric acid, and other sulfur compounds. Also called sphalerite; zinc blende; zincblende; blende; black jack. See also:sphalerite; alpha zinc sulfide CCD, 2; Handbook of Chemistry and Physics, 2; Dana, 2 Source: Dictionary of Mining, Mineral, and Related Terms ...
Hydrothermal sulfide chimneys located along the global system of oceanic spreading centers are habitats for microbial life during active venting. Hydrothermally extinct, or inactive, sulfide deposits also host microbial communities at globally distributed sites. The main goal of this study is to describe sulfide mineral alteration at the seafloor, and examine alteration products for signatures of biological activity using Fe mineralogy and stable isotope approaches. The study includes active and inactive sulfides from the East Pacific Rise 9o50N vent field. First, the mineralogy of Fe(III)-bearing precipitates is investigated using microprobe X-ray absorption spectroscopy (µXAS) and X-ray diffraction (µXRD). Second, laser-ablation (LA) and micro-drilling (MD) are used to obtain samples for Fe stable isotopes by multicollector-inductively couple plasma-mass spectrometry (MC-ICP-MS). Eight Fe-bearing minerals types are present in the samples: oxyhydroxides, secondary phyllosilicates, and sulfides
Im trying to do this net ionic equation and i keep getting stuck. ok for a surface sample from a river is suspected of lead(IV) contamination. When 5.00 ml of this sample is combined with 5.00 ml of an .185M aq solution of sodium sulfide a precipitation is formed. when this precipitate is carefully collected and then dried and weighed a mass of 0.653 mg is obtained. so what is the net ionic equation for that? and how do i find the molar concentration for lead(IV) in the original sample? anyone ...
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The synthesis of metal sulfide (MS) materials with sizes in the sub-10 nm regime often requires capping agents with long hydrocarbon chains that affect their structures and properties. Herein, this study presents a molten-state synthesis method for a series of transition-MS nanoparticles using thiourea as a reactive precursor without capping agents. This study also reports the synthesis of MS with single metals (Fe, Co, Ni, Cu, and Zn) and quaternary CuGa2In3S8 using the same synthesis protocol. Thiourea first melts to form a molten-state condition to serve as the reaction medium at a relatively low temperature (,200 °C), followed by its thermal decomposition to induce a reaction with the metal precursor to form different MS. This synthesis protocol, owing to its dynamic characteristics, involves the formation of a variety of organic carbon nitride polymeric complexes around the MS particles. Dynamic nuclear polarization surface-enhanced nuclear magnetic resonance spectroscopy is effective to ...
The changes in neurotransmitters biosynthesis in the cerebrum of Coq9R239X mice are not limited to the reduction in L‐glutamate but also to the biosynthesis of serotonin and catecholamines. These alterations might be a consequence of the disruption in hydrogen sulfide metabolism because a dose‐dependent and time‐dependent decrease in glutamate levels and increase in serotonin levels have been described in the cerebrum and frontal cortex of rats chronically exposed to 20 ppm and 75 ppm of hydrogen sulfide (Skrajny et al, 1992; Roth et al, 1995). The same authors reported a decrease in the levels of norepinephrine with the exposure to 20 ppm of hydrogen sulfide and an increase in those levels with the exposure to 75 ppm of hydrogen sulfide (Skrajny et al, 1992). Norepinephrine and epinephrine levels were, however, decreased in isolated porcine iris‐ciliary body exposed to increased concentrations of NaSH, which is a commonly used hydrogen sulfide donor (Kulkarni et al, 2009). The changes ...
The 2nd analytical group of cations consists of ions that form acid-insoluble sulfides. Cations in the 2nd group include: Cd2+, Bi3+, Cu2+, As3+, As5+, Sb3+, Sb5+, Sn2+, Sn4+ and Hg2+. Pb2+ is usually also included here in addition to the first group. Although these methods refer to solutions that contain sulfide (S2−), these solutions actually only contain H2S and bisulfide (SH−). Sulfide (S2−) does not exist in appreciable concentrations in water. The reagent used can be any substance that gives S2− ions in such solutions; most commonly used are H2S (at 0.2-0.3 M), AKT (at 0.3-0.6 M). The test with the sulfide ion must be conducted in the presence of dilute HCl. Its purpose is to keep the sulfide ion concentration at a required minimum, so as to allow the precipitation of 2nd group cations alone. If dilute acid is not used, the early precipitation of 4th group cations (if present in solution) may occur, thus leading to misleading results. Acids beside HCl are rarely used. Sulfuric acid ...
The Global Sodium Sulfide Industry 2015 Market Research Report is a professional and in-depth study on - Market Research Reports and Industry Analysis
Hydrogen sulphide or H2S is responsible for the characteristic sulphur smell of Rotorua.. There has long been medical and scientific debate about the health impacts of H2S gas in the workplace and residential areas, and this study is the largest ever of associations between ambient H2S and respiratory health. Concentrations of toxic hydrogen sulphide gas can be produced in factories as a by-product of industrial processes, as well as naturally in volcanic and geothermal regions like Rotorua.. The five year study examined a variety of health effects, including asthma, amongst over 1600 adult Rotorua residents. With a population of nearly 60,000, Rotorua is the largest centre anywhere with long term exposure to hydrogen sulphide and is recognised as an ideal place to research the health effects of H2S.. Exposure to H2S was estimated from measurements taken around Rotorua in summer and winter, and then each persons exposure was estimated from where they lived and worked. H2S exposure was divided ...
Tribotecc supplies a range of metal sulfides mainly based on manganese, molybdenum, bismuth and tungsten sulfides for the manufacturing of sintered parts. Even low concentrations of these functional additives lead to a better machinability and improve the tribological properties of the sintered powder matrix. As a consequence, high numbers of sintered parts can be produced in a cost-efficient way. They have complex geometries, withstand extreme stresses and are therefore eminently suitable for the use in automotive industry and other industries. ...
Contents. 1 Characteristics___________________________________________________4. 1.1 Physical properties_________________________________________4. 1.2 Chemical properties________________________________________5. 1.3 Allotropes________________________________________________5. 1.4 Isotopes__________________________________________________6. 1.5 Natural occurrence_________________________________________7. 2 Production______________________________________________________8. 2.1 Deposit in Kazakhstan______________________________________10. 3 Compounds_____________________________________________________10. 3.1 Sulfides__________________________________________________10. 3.2 Oxides and oxyanions_______________________________________11. 3.3 Halides and oxyhalides______________________________________12. 3.4 Pnictides_________________________________________________12. 3.5 Metal sulfides_____________________________________________12. 3.6 Organic ...
Sediment was collected 10-50 cm below the seawater/sediment interface at the Kai Tak Approach Channel connected to Victoria Harbor in Hong Kong, China. Sewage and industrial effluent had been discharged there for decades until the installation of a new sewage collection system in the late 1990s. The long lasting sulfate-reducing conditions resulted in a high sulfide concentration in the sediment, where an AVS (Acid-Volatile Sulfide) of 198 μmol g-1 had been measured [8]. The pore water after centrifugation at 4,000 rpm for 15 min had a pH of 7.89 and a salinity of 2.9%.. Enrichments were prepared by adding 20 g of wet sediment (32.0% dry matter) to serum bottles containing 70 mL of sterilized seawater, purged with N2 and incubated for at least 24 h at room temperature. Potassium nitrate (1 g L-1) and sodium phosphate, monobasic (0.1 mmol L-1), were then added from sterilized stock solutions. The bottles were incubated at 28°C in a water bath for 72 h. The enrichments were plated onto agar ...
Carbonaceous material (CM) is commonly associated with gold and sulfides in metasediment-hosted orogenic gold deposits. The role of CM in Au deposition is controversial; CM has been proposed to contribute to gold deposition by reducing Au bisulfide complexes, or by facilitating sulfidation, which destabilizes Au in bisulfide complexes with resultant Au deposition. Integration of petrographic observations, thermodynamic models, and geochemical data from metasediment-hosted orogenic gold deposits in New Zealand, Australia, Canada, and West Africa reveals genetic links between sulfides, CM, and mineralization. The results are consistent with the coexistence of CM and pyrite as a consequence of their codeposition from ore fluids, with a minor proportion of CM originally in situ in the host rocks. Au is deposited when pyrite and CM deposition decreases H2S concentration in ore fluids, destabilizing Au(HS)2- complexes. Most CM in gold deposits is deposited from CO2 and CH4 in ore fluids. These ...
A series of 6-endo-(methylthio)-bicyclo[2.2.1]heptane-2-endo-proline amides was synthesized to study the neighboring proline amide participation in electron transfer from thioethers. The thioether with endo-pyrrolidine amide formed a two-center three-electron SO bond after one electron oxidation and the oxidation potential of the thioether was lowered by 530 mV and 330 mV compared to the corresponding exo-pyrrolidine amide and the primary amide analogues, respectively. The thioether with a proline methyl ester showed the oxidation potential of 410 mV higher than that of the pyrrolidine amide. The basis for this surprising result was revealed by an X-ray crystallographic structure study of the diastereomerically pure proline methyl ester which showed amide carbonyl n → methyl ester π* interaction which removes electron density from the neighboring amide which results in less effective neighboring amide participation in thioether oxidation. This accounts for the electrochemical result. A potent ...
Looking for sulphide? Find out information about sulphide. see sulfide sulfide, chemical compound containing sulfur and one other element or sulfur and a radical. Sulfides may be salts or esters of hydrogen sulfide,... Explanation of sulphide
Butyl methyl trisulfide | C5H12S3 | CID 189722 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Carbonates are known as rock-forming minerals, while the remaining groups are often ore minerals. Calcite and dolomite are two of the most important carbonates. Pyrite is the only sulfide that commonly occurs in rocks. Sulfides are significant economic minerals that provide the main source of elements such as zinc, mercury, nickel, lead, molybdenum, copper and arsenic.. Non-silicate minerals constitute less than 10 percent of the Earths crust. Carbon is found in diamond and graphite form. The carbonates, sulfides and oxides are the most common non-silicates. A few elements exist in pure form, such as gold, silver, lead, arsenic, copper, tellurium and bismuth. Many of the non-silicates are considered economically important, particularly those that include valuable metals. Some non-silicates are valued as gems due to their beauty, color and hardness.. ...
Higher dissolved ion yields and higher SO4:Na and Ca:Na ratios together suggest that sulfide and carbonate dissolution rates are enhanced in association with glacial weathering. To first order, glaciation thus appears to act as a CO2 source, by maintaining total solute fluxes while shifting weathering toward reactions that release rather than consume CO2.. In principle, glacially enhanced Ca and SO4 fluxes could derive from preferential dissolution of sulfate-bearing evaporites or weathering of Ca-bearing silicates by sulfuric acid, reactions that would not act as CO2 sources. We have no a priori reason to expect that such effects dominate globally. Nonetheless, fully understanding the net effect of glaciation on the carbon cycle depends on quantifying (i) the proportion of the dissolved sulfate derived from sulfide mineral oxidation, and (ii) the extent to which this oxidative flux of protons (Eq. 4) is balanced by alkalinity generation from silicate and carbonate weathering (Eqs. 1 and 2). To ...
Onion belongs to the lily group of plants. The other members of this group include leeks, shallots, garlic, etc. There are over 500 species of onion such as yellow onion, green onion, white onion and much more. Each kind of variety has its own unique taste and flavor, ranging from very strong to slightly sweet.. Not only is onion being used for centuries especially in the east to add flavor to foods, but is also known for its ornamental, therapeutic and medicinal effects.. Onion contains sulfides, thiosulfonates, and sulfoxides, which produce the eye-irritating results. The thiosulfonates exhibit anti-microbial qualities that make onion quite efficient at treating infections caused by E.coli, Salmonella and Bacillus subtilis.. Studies have demonstrated that onion is quite useful in avoiding coronary artery disease and cholesterol-reducing levels. The sulfides in onion help lower blood pressure levels and fats as well. Moreover, onion makes an excellent organic dietary source of flavonoids, which ...
Page contains details about gold-deposited cadmium sulfide nanorods . It has composition images, properties, Characterization methods, synthesis, applications and reference articles :
article{2ddc0b78-97f7-4941-99e6-756e9186aa01, abstract = {,p,The Lower to Middle Ordovician Tøyen Shale in southern Sweden, a biostratigraphically well-dated siliciclastic mudstone unit, shows 18 distinct authigenic cements that include sulfides, carbonates, silicates, clays, and phosphates. Marcasite, sphalerite, galena, and six texturally distinct types of pyrite characterize the sulfides whereas only one type of dolomite and three different generations of calcite are observed in this unit. Quartz, phosphate, and organic matter occur as only one generation each. Authigenic clay minerals are represented by chlorite and kaolinite. The paragenetic sequence of cements is subdivided into the two pre-burial carbonates, succeeded by ten relatively early burial cements, and six late burial cements, the kaolinite being the latest of them all and potentially being of Cretaceous age. Based on textural relationships, the paragenetic sequence of alterations started with dolomite precipitation followed by ...
Transition Metal Sulfides (TMS), such as molybdenum disulfide (MoS.sub.2), are the petroleum industrys workhorse catalysts for upgrading heavy petroleum feedstocks and removing sulfur, nitrogen and other pollutants from fuels. We have developed an improved synthesis technique to produce SLTMS catalysts, such as molybdenum disulfide, with potentially greater activity and specificity than those currently available. Applications for this technology include heavy feed upgrading, in-situ catalysis, bio-fuel conversion and coal liquefaction.
Sulfides, Polysulfides, and Sulfanes" in Ullmann's Encyclopedia of Industrial Chemistry Ludwig Lange and Wolfgang Triebel, 2000 ... D. R. Brush (2000). "Sodium Sulfides". Kirk-Othmer Encyclopedia of Chemical Technology. doi:10.1002/0471238961.1915040902211908 ... it is converted to hydrogen sulfide and elemental sulfur. Treatment with alkylating agents gives organic polysulfides. In one ...
Iron sulfides like pyrrhotite, pentlandite, troilite and cubanite do occur, but The Mg/Si ratio of 1.07 is rather high. Only CV ... Sulfides exceed magnetite. Due to their rarity, and importance as geochemical references, many are eager to claim specimens as ... All or essentially all metal grains are now bound as oxides, sulfides, etc. In the case of Antarctic finds (the putative CY ... These meteorites have measurably higher sulfide content, and an 18O level even higher than the prior CI specimens, making them ...
The Limonene Sulfides". Journal of the American Chemical Society. 81 (13): 3430-3434. doi:10.1021/ja01522a069. Mann, J. C.; ...
ETS Laboratories (15 May 2002). "Sulfides in Wine". Archived from the original on 19 February 2008. Gómez-Míguez, M. José; ... hydrogen sulfide). Some varieties can also exhibit a mineral flavor due to the presence of water-soluble salts as a result of ...
Many iron sulfide minerals may exist in the transition between poorly ordered mackinawite and crystalline pyrite such as ... Cahill, C.L.; Benning, L.G.; Barnes, H.L.; Parise, J.B. (2000). "In situ time-resolved X-ray diffraction of iron sulfides ... Wuensch, B.J.; Prewitt, C.T.; Rajamani, V.; Scott, S.D.; Craig, J.R.; Barton, P.B. (1974). Sulfide Mineralogy: Short Course ... Mackinawite is an iron nickel sulfide mineral with the chemical formula (Fe,Ni) 1+xS (where x = 0 to 0.11). The mineral ...
Pankratz, L. B.; A. D. Mah; S. W. Watson (1987). "Thermodynamic Properties of Sulfides". U. S. Bureau of Mines Bulletin. 689. ...
Kim, Jhong K.; Kline, Margaret L.; Caserio, Marjorie C. (1978-09-01). "Methylthiolation of allylic sulfides. A degenerate [2,3 ... β-Unsaturated Sulfides and Sulfonium Salts1,2". Journal of the American Chemical Society. 88 (24): 5747-5753. doi:10.1021/ ...
Sulfide Minerals". Mineralogy Database. Retrieved 2019-09-21. "Nickel-Strunz Classification - Sulfides". Mineralogy Database. ... Arsenides are grouped with the sulfides in both the Dana and Strunz mineral classification systems. algodonite Cu6As domeykite ...
This compound is the product of the half-neutralization of hydrogen sulfide (H2S) with sodium hydroxide (NaOH). NaSH and sodium ... In contrast with sodium sulfide (Na2S), which is insoluble in organic solvents, NaSH, being a 1:1 electrolyte, is more soluble ... Butts, David; Bush, David R.; Updated By Staff (2013). "Sodium Sulfates and Sulfides". Kirk-Othmer Encyclopedia of Chemical ... One laboratory synthesis entails treatment of sodium ethoxide (NaOEt) with hydrogen sulfide: NaOCH2CH3 + H2S → NaSH + CH3CH2OH ...
X. Sulfides and ox\-sulfides". Acta Crystallographica. 2 (5): 291-6. doi:10.1107/s0365110x49000758. Charvillat, J. P.; Benedict ... Chalcogenides A wide variety of neptunium sulfide compounds have been characterized, including the pure sulfide compounds NpS, ... All of the neptunium sulfides except for the β and γ forms of Np2S3 are isostructural with the equivalent uranium sulfide and ... Of these, Np2S3, prepared by reacting NpO2 with hydrogen sulfide and carbon disulfide at around 1000 °C, is the most well- ...
doi:10.1016/0022-4596(90)90273-Z. Vaughan, David J.; Craig, James R. (1978). Mineral chemistry of metal sulfides. Cambridge ...
Scheele's analysis showed that the chemical compounds molybdenum sulfide (molybdenite), lead(II) sulfide (galena) and graphite ... I (Elements, Sulfides, Sulfosalts). Chantilly, VA: Mineralogical Society of America. ISBN 978-0962209703. Archived (PDF) from ...
Other low shear strength materials: fluorides of calcium, lithium, barium, and rare earths; sulfides of bismuth and cadmium; ...
It is also has a Strunz classification of 02.CB.05a, as a metal sulfide with gold, silver, iron, copper and other metals. The ... Volume I: Elements, Sulfides, Sulfosalts. Mineral Data Publishing. Tucson, Arizona. p. 105. ISBN 0962209708. Coloradoite. ...
Wolfgang Sand; Edgardo R. Donati (2007). Microbial processing of metal sulfides. Berlin: Springer. ISBN 978-1-4020-5589-8. " ... Mineral-Sulfide-Oxidizing Acidophiles". Applied and Environmental Microbiology. 73 (13): 4294-4299. doi:10.1128/AEM.02658-06. ...
Synthetic iron sulfide was used with copper sulfide to create the photovoltaic material. More recent efforts are working toward ... By Georgius Agricola's time, c. 1550, the term had become a generic term for all of the sulfide minerals. Pyrite is usually ... The mineral pyrite (/ˈpaɪraɪt/), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 ( ... At the time when the term became common in jewelry making, "marcasite" referred to all iron sulfides including pyrite, and not ...
I (Elements, Sulfides, Sulfosalts). Chantilly, VA, US: Mineralogical Society of America. ISBN 978-0-9622097-0-3. Retrieved ... Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is mostly ... Elemental bismuth may occur naturally uncombined, although its sulfide and oxide form important commercial ores. The free ...
Cyclic Sulfides" J. Am. Chem. Soc., 1951, volume 73, pp 3632-3635. doi:10.1021/ja01152a022 v t e (Articles without EBI source, ... It can be prepared by the reaction of 1,5-dibromopentane with sodium sulfide: Br-(CH2)5-Br + Na2S → (CH2)5S + 2NaBr E. V. ...
X. Sulfides and ox\-sulfides". Acta Crystallographica. 2 (5): 291-6. doi:10.1107/s0365110x49000758. Charvillat, J. P.; Benedict ... Chalcogenides A wide variety of neptunium sulfide compounds have been characterized, including the pure sulfide compounds NpS, ... All of the neptunium sulfides except for the β and γ forms of Np2S3 are isostructural with the equivalent uranium sulfide and ... Of these, Np2S3, prepared by reacting NpO2 with hydrogen sulfide and carbon disulfide at around 1000 °C, is the most well- ...
... is an iron sulfide mineral with the chemical formula Fe2+Fe3+2S4. It is the sulfur equivalent of the iron oxide ... I (Elements, Sulfides, Sulfosalts). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209708. Retrieved December 5 ... Vaughan, D. J.; Craig, J. R. "Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. ISBN 0-521- ... silts and arkosic sand often in varved sulfide rich clays. It is also found in hydrothermal veins. Greigite is formed by ...
"Beryllium Sulfide". American Elements. Retrieved 2022-11-23. PubChem. "Beryllium sulfide". Retrieved ... sulfide - GaS Gallium(III) sulfide - Ga2S3 Digermane - Ge2H6 Germane - GeH4 Germanium(II) bromide - GeBr2 Germanium(II) ... "Barium sulfide". Retrieved 2022-11-22. PubChem. "Barium titanate(IV)". ... "Antimony(V) sulfide". Retrieved 2022-11-19. PubChem. "Arsenic trifluoride". ...
Selenium sulfide is also known to reduce dryness of scalp and folliculitis. Systemic toxicity can appear if it is applied to ... Selenium sulfide slows down epidermal proliferation. It is fungicidal to Pityrosporum ovale. It also acts as a keratolytic. ... Like selenium sulfide, zinc pyrithione (a zinc complex with two chelating pyrithione anions) also reduces epidermal turnover ... "Selenium Sulfide". Mediline Plus. Retrieved 9 August 2012. Sheldon, Lynne. "Uses of Zinc Pyrithione for Hair Conditions". ...
Sulphide Pass (78°12′S 162°45′E / 78.200°S 162.750°E / -78.200; 162.750) is a saddle that forms a mountain pass on Rucker ... "Sulphide Pass". New Zealand Gazetteer. Retrieved 2019-02-05. Coordinates: 78°11′S 162°32′E / 78.183°S 162.533°E / -78.183; ...
According to electron diffraction, the C-C and C-S distances in ethylene sulfide are respectively 1.473 and 1.811 Å. The C-C-S ... Thiirane, more commonly known as ethylene sulfide, is the cyclic chemical compound with the formula C2H4S. It is the smallest ... Thiirane is also used to describe any derivative of the parent ethylene sulfide. ... "Ethylene Sulfide". Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons. doi:10.1002/047084289X.re079.pub2. ISBN ...
Zinc sulfide, ZnS, crystallizes in two closely related structures, the zincblende crystal structure and the Wurtzite crystal ... In both ZnO and ZnS, (zincblende) zinc is bound tetrahedrally bound to four ligands (oxide and sulfide, respectively). Many ... ISBN 978-0-8306-3018-9. "Zinc Sulfide". American Elements. Retrieved 2009-02-03. Academic American Encyclopedia. Danbury, ...
Selenium sulfide is also used to treat tinea versicolor, a fungal infection of the skin. Deep Cleansing was launched by Chattem ... More specifically, selenium sulfide, an anti-infective agent, relieves itching and flaking of the scalp and removes the dry, ... "Selenium Sulfide". PubMed Health. National Center for Biotechnology Information, U.S. National Library of Medicine. Retrieved ... Over the counter Selsun Blue contains 1% selenium sulfide as its active ingredient in its most popular version (the word " ...
Instead, they can use sulfur in the form of sulfide, or thiosulfate (as well, some species can use H2, Fe2+, or NO2−) as the ... This anoxic environment with light and sufficient sulfide availability is ideal for purple sulfur bacteria. A study done at the ... Harmful compounds such as methane, a greenhouse gas, and hydrogen sulfide, a pungent, toxic compound, can be found in ... If sufficient sulfate is present to support sulfate reduction, the sulfide, produced in the sediments, diffuses upward into the ...
... sulfide (ZnS) is used in luminescent pigments such as on the hands of clocks, X-ray and television screens, and luminous ... This produces zinc sulfide, together with large amounts of hot gas, heat, and light. Zinc sheet metal is used as a durable ... Sulfides formed as the crust solidified under the reducing conditions of the early Earth's atmosphere. Sphalerite, which is a ... This may refer to small quantities of zinc that is a by-product of smelting sulfide ores. Zinc in such remnants in smelting ...
Hydrogen Sulfide. National Academies Press (US). Doty RL, Deems DA, Stellar S (August 1988). "Olfactory dysfunction in ... Dementia with Lewy bodies Tumors of the frontal lobe Antibiotics Fibromyalgia Multiple sclerosis Exposure to hydrogen sulfide ( ...
"Definition: selenium sulfide from Online Medical Dictionary". "DrugBank: DB00971 (Selenium Sulfide)". Archived from the ... Many selenium sulfides are known, as indicated by 77Se-NMR spectroscopy. Selenium sulfide was introduced for medical use in the ... Selenium sulfide is under development for the treatment of meibomianitis (meibomian gland dysfunction) and dry eyes in topical ... "Selenium sulfide topical Use During Pregnancy". Archived from the original on 16 January 2017. Retrieved 13 January ...
Exposure to hydrogen sulfide may cause irritation to the eyes and respiratory system. ... Hydrogen sulfide (H₂S) is a colorless gas with a strong odor of rotten eggs. ... Hydrogen sulfide (H₂S) is a colorless gas with a strong odor of rotten eggs. Exposure to hydrogen sulfide may cause irritation ... EPA Acute Exposure Guideline Levels: Hydrogen Sulfideexternal icon. *EPA Toxicological Review of Hydrogen Sulfidepdf icon ...
Carbonyl sulfide can also be called carbon oxide sulfide and carbon oxysulfide. ... Carbonyl sulfide is a colorless gas with a sulfur odor; it does not have an odor when it is free from impurities. ... What is carbonyl sulfide? Carbonyl sulfide is a colorless gas with a sulfur odor; it does not have an odor when it is free from ... Carbonyl sulfide can remain in the air for 2-10 years. * Carbonyl sulfide reacts with water to form carbon dioxide and hydrogen ...
Selenium Sulfide: learn about side effects, dosage, special precautions, and more on MedlinePlus ... Selenium sulfide comes in a lotion and is usually applied as a shampoo. As a shampoo, selenium sulfide usually is used twice a ... Selenium sulfide is for external use only. Do not let selenium sulfide get into your eyes, nose, or mouth, and do not swallow ... Before using selenium sulfide,. *tell your doctor and pharmacist if you are allergic to selenium sulfide or any other drugs. ...
Hydrogen sulfide (H2 S) is a colorless, flammable gas that has strong odor of rotten eggs. H2 S poisoning is a rarity, mainly ... encoded search term (Hydrogen Sulfide Toxicity) and Hydrogen Sulfide Toxicity What to Read Next on Medscape ... Hydrogen Sulfide Toxicity Differential Diagnoses. Updated: Feb 25, 2022 * Author: David Vearrier, MD, MPH; Chief Editor: ... Occupationally related hydrogen sulfide deaths in the United States from 1984 to 1994. J Occup Environ Med. 2000 Sep. 42(9):939 ...
1981)‎. Hydrogen sulfide. World Health Organization. ...
... Bioassay of Selenium Sulfide (Dermal Study) for Possible ... Selenium sulfide. 7446-34-6. 05/01/1979. Topical Application. 0,0.5,1.0 MG/DAY/50 PER GROUP. Hazleton, Vienna. ...
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
Reference mass spectra and analytical correlations for 20 alkylcycloalkyl sulfides and two dicycloalkyl sulfides are presented ... Reference mass spectra and analytical correlations for 20 alkylcycloalkyl sulfides and two dicycloalkyl sulfides are presented ...
What is the chemical formula of chromium ( vi) sulfide?. CrS3 is the formula of chromium(VI) sulfide ... What is the formula for chromium(III) sulfide?. The formula for chromium(III) sulfide is Cr2S3. ... What is the formula for chromium(III) sulfide?. The formula for chromium(III) sulfide is Cr2S3. ... What is the chemical formula for chromium sulfide?. Cr2S3 is Chromium Sulfide. ...
Hydrogen sulfide (H2S) is a gaseous signalling molecule with important roles in cardiovascular health and disease. In this ... Hydrogen sulfide (H2S) has emerged as a gaseous signalling molecule with crucial implications for cardiovascular health. H2S is ... 1: Sulfide metabolite formation and fate.. a , Various chemical metabolite fate pathways for sulfide and its related species ... Olson, K. R. & Straub, K. D. The role of hydrogen sulfide in evolution and the evolution of hydrogen sulfide in metabolism and ...
Air Monitoring for Hydrogen Sulfide. While there are no regulatory exposure limits outside of the workplace for hydrogen ... Hydrogen Sulfide2. Classification. 10 min. 30 min. 1 hour. 4 hour. 8 hour. ... New Indy Odor Investigation Air Monitoring for Hydrogen Sulfide New Indy Reports & Documents Frequently Asked Questions ... The odor threshold range for hydrogen sulfide is 0.0005 to 0.3 ppm (0.5 to 300 ppb). ...
Interactive 3D chemistry animations of reaction mechanisms and 3D models of chemical structures for students studying University courses and advanced school chemistry hosted by University of Liverpool
Testing Laboratory providing Environmental testing services. Analysis of air, water, dust, soil, hazardous waste and consumer products.
... sulphide can be precipitated by hydrogen sulphide from bismuth solutions , Buy chemicals and reagents online from Sigma Aldrich ... Bismuth(III) sulphide can be precipitated by hydrogen sulphide from bismuth solutions. 1 ...
US-2514186-A chemical patent summary.
Phoenix AreaOne of Americas Top 20 Thriving Cities. Make your way to Gilbert, Arizona. Our welcoming town is just southeast of Phoenix and only a short drive away from the Phoenix-Mesa Gateway Airport. One of the best places to live in America, Gilbert boasts sunny weather, safe neighborhoods and an exceptional school system, as well as a wide array of outdoor and cultural attractions ...
PPS-I-GF30 Polyphenylene Sulfide, Xytron™ offers extremely good chemical resistance, dimensional stability, intrinsic flame ... DSM Xytron™ G3080E PPS-I-GF30 Polyphenylene Sulfide Categories: Polymer; Thermoplastic; Polyphenylene Sulfide (PPS); ... Polyphenylene Sulfide (PPS) with 30% Glass Fiber Filler. Material Notes: Xytron™ offers extremely good chemical resistance, ...
Project employees will take readings to detect any presence of H2S gases around the outlet works and surrounding areas.
Glacier Climb - Mount Shuksan/Sulphide Glacier. Single day outing with a hardy crew - 14.5 hrs car to car. ...
Nomination Summary for Nomination Summary for Lead sulfide (N86322). Nomination Summary for Lead sulfide (N86322). Nominated ...
... hydrogen sulfide (H,sub,2,/sub,S) and nitric oxide (NO) are now recognized as the predominant members of a new family of ... Interaction of Hydrogen Sulfide with Nitric Oxide in the Cardiovascular System. B. V. Nagpure1and Jin-Song Bian. 1 ... L. Li, P. Rose, and P. K. Moore, "Hydrogen sulfide and cell signaling," Annual Review of Pharmacology and Toxicology, vol. 51, ... C. Szabõ, "Hydrogen sulphide and its therapeutic potential," Nature Reviews Drug Discovery, vol. 6, no. 11, pp. 917-935, 2007. ...
... ... Under the combined action of corrosion fatigue in the presence of a hydrogen sulfide saline solution these values were reduced ... The most damaging corrosive medium consisted of a salt water solution through which hydrogen sulfide gas was bubbled. Lower ...
2022 Ashtead Technology. Designed & developed by mtc. ...
Chemistry: NiS, Nickel Sulfide *Class: Sulfides and Sulfosalts *Uses: Mineral specimens and as a very minor ore of nickel. * ... Boulangerite and jamesonite are two other sulfides that form similar acicular crystals. However, jamesonite is gray and brittle ... Millerite is one of a few sulfide minerals that form fine acicular crystals that appear as hair-like fibers aggregated into ...
Most Australian sulphide projects are in the ballpark of 1.2-1.8% nickel in resources, but the occurrences are much smaller. ... Economics of lower grade sulphide projects. Given that production focus in the world of nickel has always been on higher grade ... We believe that its time for lower grade nickel sulphide projects, historically shunned by the market, to start to shine. ... So, for battery raw materials, I would suggest that investors look much more closely at lower grade nickel sulphide projects ...
Sulfides in the upper mantle. Sulfides are ubiquitous accessory phases in all types of mantle xenoliths. The major sulfide ... Sulfides are minerals that contain the sulfide anion, S2-, as the major structural component. Sulfides are common accessory ... MOx/2 (silicate) + (x/2)FeS (sulfide) = MSx/2 (sulfide) + (x/2)FeO (silicate) (3) ... PbO (silicate) + FeS (sulfide) = PbS (sulfide) + FeO (silicate) (4). As for Equation (1), Equation (4) can be rearranged so ...
  • Reference mass spectra and analytical correlations for 20 alkylcycloalkyl sulfides and two dicycloalkyl sulfides are presented to provide information that will facilitate the identification of sulfur compounds occurring in natural or synthetic mixtures. (
  • Palme and O'Neill 2013) - sulfides are, nonetheless, very important phases because many elements have a strong affinity for sulfur. (
  • These sulfur-loving elements are termed 'chalcophiles' (Fig. 1), and they are concentrated in sulfide minerals. (
  • Hydrogen sulfide is used in preparation of other sulfur chemical compounds and can be a byproduct of industrial activities such as pulp and paper mills, manufacturing rayon, food processing, tanneries and fur processing, and oil and natural gas refineries. (
  • Moreover, addition of organic matter reduced seagrass rhizome biomass and increased pore water sulfide levels, lucinid tissue sulfur content, lucinid condition (expressed as flesh/shell dry weight ratio), and total lucinid biomass, while enhancement of lucinid densities reduced lucinid condition. (
  • Large sulfur isotope fractionation by bacterial sulfide oxidation. (
  • A sulfide-oxidizing microorganism, Desulfurivibrio alkaliphilus (DA), generates a consistent enrichment of sulfur-34 (34 S) in the produced sulfate of +12.5 per mil or greater. (
  • Since the DA-type sulfide oxidation pathway is ubiquitous in sediments, in the modern environment, and throughout Earth history, the enrichments and depletions in 34 S in sediments may be the combined result of three microbial metabolisms: microbial sulfate reduction, the disproportionation of external sulfur intermediates, and microbial sulfide oxidation. (
  • Effectively, this means that industries that use hydrogen sulfide, such as sulfur-producing metallurgy or certain types of oil refineries that use hydrogen sulfide as an additive, will need a risk management plan in place, but that industries where hydrogen sulfide is a byproduct, such as pulping or concentrated agricultural feeding operations (CAFOs) often will not need to make a hydrogen sulfide risk management plan. (
  • Since hydrogen sulfide can oxidize in the atmosphere to sulfur dioxide, which is a criteria pollutant included in the NAAQS, industrial operations who emit hydrogen sulfide above a certain threshold, called a Significant Emissions Rate (SER), will have to obtain a PSD permit. (
  • It is made by melting metallic bismuth with sulfur or passing hydrogen sulfide into bismuth salt solution. (
  • As is well known, sulfur tends to form sulfides, in particular, chromium sulfides when the steel contains chromium. (
  • One is in atomic sulfur state as a solid solution, and the other is in sulfide state as a precipitate. (
  • From a series of experiments, it was found that the sulfide state played a more important role in improving the steam oxidation resistance than the atomic sulfur state. (
  • Furthermore, this sulfur effect worked significantly in the steam oxidation test performed at the temperatures above 873K which corresponded to the temperature for the chromium sulfide to dissolve and instead for the chromium oxide to form in the steels. (
  • This result indicates that the beneficial effect of sulfur in improving the steam oxidation resistance is related closely to the sulfide stability against the oxide in the steels. (
  • A new polyphenylene sulfide (PPS) film from Toray Industries offers low dielectric losses as well as thermal and flame resistance. (
  • Toray Industries has announced Torelina , a new type of polyphenylene sulfide (PPS) film highlighted for its dielectric characteristics, flame retardancy, and chemical robustness. (
  • Polyphenylene sulfide (PPS) is a polymer made up of aromatic rings linked by sulfides with a melting point of 280°C. The polymer is mechanically and chemically strong and flame resistant. (
  • Polyphenylene sulfide. (
  • This observation challenges the general consensus that the microbial oxidation of sulfide does not result in large 34 S enrichments and suggests that sedimentary sulfides and sulfates may be influenced by metabolic activity associated with sulfide oxidation. (
  • This product is used for the collection of copper sulfide ore, copper (gold) ore, copper-zinc ore, and is also suitable for sulfide ore with a slightly higher oxidation rate. (
  • Nakai, M, Murata, Y, Morinaga, M & Hashizume, R 2005, Dependence of high-temperature steam oxidation resistance on the stability of the chromium sulfide in high-chromium heat-resistant steels . (
  • In some scenarios, the sulfide minerals may be nonreactive or there may be sufficient buffering capacity available in the material to neutralize any acid released from sulfide oxidation. (
  • We think the appearance (formation) of this platinum group mineral in the fusion crust may be linked to compositional changes in metal-sulfide liquid during remelting and oxidation processes as the meteorite came into contact with atmospheric oxygen," Sharygin stated. (
  • Immediately Dangerous to Life or Health (IDLH) Value Profile: Hydrogen sulfide -The IDLH documents the criteria and information sources used by NIOSH to determine immediately dangerous to life or health concentrations. (
  • At concentrations of 135 micrograms per cubic meter (µg/m 3 ) (0.055 ppm), people may be able to smell carbonyl sulfide in air. (
  • In addition to their economic importance, residual sulfides exert a strong control on the budget of chalcophile elements during partial melting and crustal differentiation and, hence, have a profound effect on the trace-element concentrations found in erupted magmas. (
  • Eclogitic sulfides are generally similar with respect to their Cu content compared to peridotite-hosted sulfides, but are consistently lower in Ni, with average concentrations ~3 wt% Ni. (
  • The Ni and Cu concentrations in sulfide inclusions in both peridotite- and eclogite-type diamonds are broadly similar compared to intergranular sulfides in peridotite and eclogite xenoliths, respectively. (
  • The marked difference in Ni concentrations between peridotite- and eclogite-hosted sulfides has been used as a paragenetic discriminator (Bulanova et al. (
  • Brief exposures to high concentrations of hydrogen sulfide can cause loss of consciousness, coma, and possible death. (
  • The field survey revealed a strong positive correlation between seagrass above-ground biomass and lucinid densities, and pore water sulfide concentrations close to zero at all sites. (
  • You can smell the "rotten egg" odor of hydrogen sulfide at low concentrations in air. (
  • People can sometimes smell the "rotten egg" odor of hydrogen sulfide when lower concentrations of the gas exist. (
  • However, after continuous low-level exposure, or with higher concentrations, a person loses his/her ability to smell the gas which means you can NOT rely on your sense of smell to indicate the presence of hydrogen sulfide. (
  • Questions [questions:hydrogen-sulfide-regulations] ## Environmental regulations Hydrogen sulfide is flammable gas that is both a nuisance at low concentrations and a toxin at higher concentrations or long exposures. (
  • When you have concentrations of greater than 80 ppm of hydrogen sulfide, or you get up to 200 ppm, which is easily done, you'll kill every animal [in the ocean]. (
  • Sulfide minerals such as pyrite, pyrrhotite, and chalcopyrite in mine waste material can react with water and oxygen to produce sulfuric acid, which may in turn leach metals from the same material and introduce them into the environment at potentially high concentrations. (
  • or =1.0 mmol/L). Diallyl sulfide, dipropyl sulfide, and methyl allyl sulfide slightly inhibited [2-14C]acetate incorporation into cholesterol only at high concentrations. (
  • Global Zinc Sulfide ZnS Powder,Overview of Zinc Sulfide ZnS Powder,Application of Zinc Sulfide ZnS Powder,Zinc sulfide ZnS product price,Supplier of Zinc Sulfide ZnS Products market trend 2025-2026 What is Zinc Sulfide ZnS Product? (
  • After receiving my first zinc sulfide (ZnS) product I was keen to know if this was an ion that has crystals or not. (
  • What is Zinc Sulfide ZnS Product? (
  • People living near a wastewater treatment plant, gas and oil drilling operation, farm with manure storage or livestock confinement facilities, or a landfill may be exposed to higher levels of hydrogen sulfide. (
  • Workers involved in petroleum and natural gas drilling and refining, wastewater treatment, rayon textiles, tanneries, landfills, and farms with manure storage pits my be exposed to higher levels of hydrogen sulfide. (
  • Mudflats, with oxygen-starved organic material in the sediment, can produce generally low levels of hydrogen sulfide. (
  • WARNING: First responders must be trained and properly protected before entering areas with elevated levels of hydrogen sulfide. (
  • This condition, known as olfactory fatigue, can also occur when people have been exposed to hydrogen sulfide for a longer period of time. (
  • How can I be exposed to hydrogen sulfide? (
  • In most cases, a person who is exposed to hydrogen sulfide will make a full recovery within hours to a few weeks - it depends upon the individual and the level of exposure. (
  • Bismuth(III) sulphide can be precipitated by hydrogen sulphide from bismuth solutions. (
  • Exposure to hydrogen sulfide may cause irritation to the eyes and respiratory system. (
  • Workers may be harmed from exposure to hydrogen sulfide. (
  • The following resources provide information about occupational exposure to hydrogen sulfide. (
  • Contains a standard for mitigation of exposure to hydrogen sulfide to prevent adverse effects over a working lifetime. (
  • NIOSH Criteria Documents: Criteria for a Recommended Standard: Occupational Exposure to Hydrogen Sulfide -DHHS (NIOSH) Publication No. 77-158. (
  • It is believed that exposure to hydrogen sulphide prevents the brain from using oxygen by inhibiting the enzyme cytochrome oxidase. (
  • DO NOT rely on your sense of smell to indicate the continuing presence of hydrogen sulfide or to warn of harmful levels. (
  • A research team, including marine ecologist, Carlos Duarte of King Abdullah University of Science and Technology (KAUST) in Saudi Arabia, derived a mathematical model to simulate the growth patterns of the seagrass Posidonia oceanica in the presence of hydrogen sulphide. (
  • Global Silicon Sulfide, SiS2 Overview, Silicon Sulfide Applications, Silicon Sulfide Suppliers, Silicon Sulfide Price market trend 2025-2026 What is silicon sulfide? (
  • Global Zinc Sulfide ZnS market trend 2025-2026 Is zinc sulfide fluorescent or phosphorescent? (
  • Two Individuals Overcome By Hydrogen Sulfide Gas While Cleaning a Farm Facility Water Well With 28% Liquid Muriatic Acid. (
  • The most damaging corrosive medium consisted of a salt water solution through which hydrogen sulfide gas was bubbled. (
  • Use the right test equipment, such as an electronic meter that detects hydrogen sulfide gas. (
  • Beaches with large amounts of decaying seaweed and mudflats with trapped organic material below the sediment can produce hydrogen sulfide. (
  • Identify processes that could release or produce hydrogen sulfide. (
  • What is the formula for chromium III sulfide? (
  • Ascertain whether lead oxide and lead sulfide have comparable toxicities. (
  • PbS (lead sulfide) also exhibits better dielectric properties than LCP film does, and it is also less vulnerable to extreme temperature and humidity. (
  • Investigations indicate that the Mt. Henry Clay area massive sulfide occurrences are stratiform, have a similar mineralogy, and are in a geologic setting similar to that of the windy craggy deposit. (
  • Investigations indicate that the Mt. Henry Clay area is highly mineralized and a target for the discovery of stratiform massive sulfide deposits. (
  • Selenium sulfide, an anti-infective agent, relieves itching and flaking of the scalp and removes the dry, scaly particles that are commonly referred to as dandruff or seborrhea. (
  • Selenium sulfide comes in a lotion and is usually applied as a shampoo. (
  • As a shampoo, selenium sulfide usually is used twice a week for the first 2 weeks and then once a week for 2, 3, or 4 weeks, depending on your response. (
  • For skin infections, selenium sulfide usually is applied once a day for 7 days. (
  • Use selenium sulfide exactly as directed. (
  • Avoid getting selenium sulfide in your eyes. (
  • Do not leave selenium sulfide on your hair, scalp, or skin for long periods (e.g., overnight) because it is irritating. (
  • selenium sulfide may damage it. (
  • If you are using selenium sulfide before or after bleaching, tinting, or permanent waving your hair, rinse your hair with cool water for at least 5 minutes after applying selenium sulfide to prevent discolored hair. (
  • tell your doctor and pharmacist if you are allergic to selenium sulfide or any other drugs. (
  • If you become pregnant while using selenium sulfide, call your doctor. (
  • Selenium sulfide may cause side effects. (
  • Useful search terms for hydrogen sulfide include "hydrosulfuric acid," "sewer gas," and "sulfuretted hydrogen. (
  • Hydrogen sulfide (H₂S) is a colorless gas with a strong odor of rotten eggs. (
  • The odor threshold range for hydrogen sulfide is 0.0005 to 0.3 ppm (0.5 to 300 ppb). (
  • Fuse, H 1995, ' Transformation of Dimethyl Sulfide and Related Compounds by Cultures and Cell Extracts of Marine Phyto plankton ', Bioscience,Biotechnology, and Biochemistry , vol. 59, pp. 1773-1775. (
  • This flotation process is to float dissociated copper concentrate first after grinding and classifying, then strengthen flotation reagent to float copper-sulfide mixed concentrate from tailings, finally dissociate copper and sulphur. (
  • Potential sulfide-bearing materials include waste rock overburden, processed ore (tailings) as well as exposed rock from either an open pit or underground mine. (
  • 5 types of tailings contain very few sulfide except Matagami tailings that contain 25% of pyrite. (
  • Bismuth sulfide, Chemical formula Bi2S3. (
  • Bismuth sulfide is an important semiconductor material, and its application in optoelectronic components and thermoelectric devices has brought great convenience to mankind. (
  • Nano-bismuth sulfide makes its various properties more optimized. (
  • Because the properties of nano-materials depend to a large extent on the morphology of nanomaterials, it is of substantial significance to synthesize more bismuth-sulfide nanostructures with special morphologies. (
  • Bismuth sulfide (Bi2S3), as an important semiconductor material, has potential application value in thermoelectric, electronic and optoelectronic devices and infrared spectroscopy. (
  • The bandgap energy of bismuth sulfide at room temperature is 1.33eV, which can be used to make photoelectric converters and is widely used in thermoelectric cooling processes. (
  • Nano-scale bismuth sulfide can not only blue-shift the ultraviolet-visible absorption wavelength and fluorescence emission wavelength, but also generate a nonlinear optical response, enhance the redox ability of nanoparticles, and has the excellent photoelectric catalytic performance. (
  • If you want to buy bismuth sulfide powder in bulk, please feel free to send an inquiry to get the latest price. (
  • Bismuth sulfide powder can be used for the preparation of bismuth sulfide nanoplates nano-platelets and ultrathinthin films. (
  • Bismuth sulfide powder is suitable for liquid chemical peeling to prepare Bi2S3 nanosheets and nanoparticles, up to several layers of thin films. (
  • Bismuth sulfide (Bi2S3) has a favorable bandgap of 1.3 eV (close to infrared light) and a relatively large absorption coefficient. (
  • Bismuth sulfide has the advantages of environmental friendliness, photoconductivity, and nonlinear optical response. (
  • Damp reunion will affect Bi2S3 powder dispersion performance and using effects, therefore, Bismuth Sulfide Bi2S3 Powder should be sealed in vacuum packing and stored in the cool and dry room, the Bismuth Sulfide Bi2S3 Powder can not be exposure to air. (
  • In addition, the Bismuth Sulfide Bi2S3 Powder should be avoided under stress. (
  • We have many different kinds of packing which depends on the Bismuth Sulfide Bi2S3 Powder quantity. (
  • Bismuth Sulfide Bi2S3 Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request. (
  • Bismuth Sulfide Bi2S3 Powder shipping:could be shipped out by sea , by air, by express?as soon as possible once payment receipt. (
  • Magnetite and bismuth sulfide Janus hete. (
  • This allows a type of bacteria to take over that creates hydrogen sulfide (H₂S). (
  • To investigate the protective effect of diallyl sulfide (DAS) , against benzene-induced genetic damage in rat.In September 2018, Sixty adult male adaptive feeding 5 days, were randomly divided into six groups according to their weight. (
  • Millerite is one of a few sulfide minerals that form fine acicular crystals that appear as hair-like fibers aggregated into sprays. (
  • Sulfides are minerals that contain the sulfide anion, S 2- , as the major structural component. (
  • Sulfides are common accessory minerals in the Earth's interior. (
  • Thus, sulfides control the behaviour of the chalcophile elements during magmatic processes. (
  • At present, the flotation processes used in the extraction of copper from sulphide ore mainly include instant flotation process, copper staged preferential flotation process and electrochemical flotation process. (
  • In summary, this work provides valuable information for effective applications of these earth-abundant metal sulfides for energy and environmental photocatalytic processes. (
  • Silicon sulfide, the molecular formula is SiS2. (
  • The design was defined by the variation of three mixture components (Al₂O₃, Graphite and Sulfides) of the Brake Pad Formula according to a Response Surface Method (RSM). (
  • Zinc sulfide is an inorganic compound with the chemical formula ZnS, which is a white or slightly yellow powder, which becomes darker when exposed to light. (
  • Global ZnS powder market trend 2022-2026 What is Zinc Sulfide ZnS Used For? (
  • In this communication, we report a simplistic non-aqueous fabrication route for oleic-acid capped luminescent cadmium sulphide quantum dots at low temperature. (
  • J. Patel, F. Mighri and A. Ajji, "Simple Non-aqueous Fabrication Route for Oleic Acid Capped Luminescent Cadmium Sulphide Quantum Dots at Relatively Low Temperature," Soft Nanoscience Letters , Vol. 1 No. 3, 2011, pp. 61-65. (
  • B. Ludolph, M. A. Malik, P. O'Brien and N. Revaprasadu, "Novel Single Molecule Precursor Routes for the Direct Synthesis of Highlymonodispersed Quantum Dots of Cadmium or Zinc Sulfide or Selenide," Chemical Communication, No. 17, No. 30, 1998, pp. 1849-1850. (
  • Carbonyl sulfide can also be called carbon oxide sulfide and carbon oxysulfide. (
  • Historically acknowledged as toxic gases, hydrogen sulfide (H 2 S) and nitric oxide (NO) are now recognized as the predominant members of a new family of signaling molecules, "gasotransmitters" in mammals. (
  • A small amount of hydrogen sulfide is produced by bacteria in your mouth and gastrointestinal tract. (
  • Recently, a facultative mutualism between seagrasses and lucinid bivalves with endosymbiotic sulfide-consuming gill bacteria was discovered that may prevent toxic sulfide accumulation in seagrass sediments. (
  • These bacteria are able to oxidize gold-bearing sulphide ores and concentrates under controlled conditions. (
  • An Overview of Zinc Sulfide Zinc sulfide is an inorganic compound employed as a pigment in optical coatings. (
  • The most common use of zinc sulfide is as a pigment in paints, plastics and rubber. (
  • Hydrogen sulfide (H 2 S) is a naturally occurring, colourless gas that is toxic, corrosive and flammable. (
  • Large-scale seagrass diebacks have been related to accumulation of toxic sulfide in the sediment, a phenomenon predicted to occur more frequently in the near future due to ongoing global warming and increasing organic loading of coastal systems worldwide. (
  • Hydrogen sulphide is extremely toxic," the document says. (
  • Workers are exposed when they inhale hydrogen sulphide in air, and this toxic gas is quickly absorbed by the lungs. (
  • A mathematical model shows that special vegetation patterns in seagrass meadows - featuring rings, arches and spirals - are mediated by hydrogen sulphide, which is toxic to the plants. (
  • Two kinds of collectors, sodium butyl xanthate and kerosene, and a depressor, sodium sulfide, were used in this research. (
  • Although approved for use in cyanide poisoning, sodium nitrite is the initial drug of choice for hydrogen sulfide poisoning. (
  • Sodium thiosulfate should not be used in the treatment of hydrogen sulfide poisoning. (
  • This does not share the crossover treatment that sodium nitrites do with hydrogen sulfide (ie, it is useless in hydrogen sulfide poisoning). (
  • Hydrogen sulfide is a colorless, flammable gas that smells like rotten eggs at low concentration levels in the air. (
  • A Work Safe Alberta document from the provincial government describes hydrogen sulphide as a "colourless and poisonous flammable gas with a strong smell of rotten eggs. (
  • Furthermore, the field experiment revealed that addition of organic matter (starch mixed with sucrose) increased sedimentary sulfide intrusion into seagrass ( Zostera noltei ) leaves (a proxy for sulfide stress), while experimentally enhanced lucinid densities reduced sulfide intrusion, regardless of addition of organic matter. (
  • How to Extract Copper Sulphide Ore? (
  • In this post we're going to see how to extract copper sulphide ore. (
  • Copper sulphide ore has good inherent floatability, so flotation process is a mature method used in the extraction of copper from sulphide ore. (
  • This flotation process has been applied in many copper sulphide ore and got good economic indicators. (
  • And it is widely applied in many large and medium-sized copper sulphide ore processing plants. (
  • Instant flotaion process, copper staged preferential flotation process and electrochemial flotation process are three widely used ways to extract copper sulphide ore. (
  • The model takes into consideration seagrass branching rate, its mortality, which increases with sulphide concentration, and the plant sensitivity to sulphides. (
  • Bare soil with a high concentration of sulphide is left in the ring's centre. (
  • Mercury sulfide (HgS) nanoparticles (NPs) were prepared in the presence of water-soluble thiols as capping ligands in aqueous solutions. (
  • Global ZnS powder market trend 2024-2029 What is Zinc Sulfide ZnS? (
  • Is it time for lower grade nickel sulphide projects to shine? (
  • We believe that it's time for lower grade nickel sulphide projects, historically shunned by the market, to start to shine. (
  • The overall resource grade of the project (open pit and underground) amounts to 0.54% nickel, but the takeout multiple is much higher than the previous multiple for a major low grade sulphide project - the Dumont project, which was acquired in 2020. (
  • NIOSHTIC-2 search results for hydrogen sulfide -NIOSHTIC-2 is a searchable database of worker safety and health publications, documents, grant reports, and journal articles supported in whole or in part by NIOSH. (
  • The major sulfide phases present in mantle rocks are pentlandite, pyrrhotite and chalcopyrite (Vaughan and Corkhill 2017 this issue). (
  • According to the Bureau of Labor Statistics (BLS), hydrogen sulfide caused 46 worker deaths between 2011 and 2017. (
  • Hydrogen sulfide (H 2 S) has emerged as a gaseous signalling molecule with crucial implications for cardiovascular health. (
  • Yet, direct field-based evidence for the importance of this mutualism in alleviating sulfide stress in seagrasses is currently lacking, as well as how its role may change when sediment sulfide levels increase due to environmental change. (
  • These results provide the first field-based evidence that lucinid bivalves and their sulfide-oxidizing gill symbionts mitigate sulfide stress in seagrasses, and suggests that the dependence of seagrass on this seagrass-lucinid mutualism will increase under conditions of enhanced sediment sulfide production, as predicted for the near future. (
  • Chenuel B, Sonobe T, Haouzi P. Effects of infusion of human methemoglobin solution following hydrogen sulfide poisoning. (
  • The Department of Health and Human Services (DHHS), the International Agency for Research on Cancer (IARC) and the EPA have not classified carbonyl sulfide as to its carcinogenicity. (
  • Cobalt(II) sulfide was not classifiable as to its carcinogenicity to humans (Group 3). (
  • Families can be exposed to more carbonyl sulfide than the general population if they live near natural or industrial sources of carbonyl sulfide, such as wetlands, volcanos, or coal combustion. (
  • In Earth's crust, these elements are typically found associated with base-metal sulfides, and sulfide deposits are mined extensively as a result. (
  • This will include comments on the possible exhalative origin of the tin bearing sulphide deposits of Tasmania. (
  • This includes identifying known sources of hydrogen sulfide and evaluating possible fire and explosion hazards. (
  • The goal of H2S Alive is to prepare workers to recognize H2S (hydrogen sulfide) hazards and protect themselves, as well as perform a basic rescue during an H2S incident. (
  • The compositions of sulfides from mantle xenoliths and diamond inclusions are shown in Figure 2. (
  • All the elegance and majesty of crystal enhanced by subtle inclusions of coloured enamels, give this Sulfide Press Paper , entirely handmade, a unique refinement. (
  • The accumulation of hydrogen sulphide influences the dynamics and growth of seagrass meadows. (
  • Two Maintenance Workers Die After Inhaling Hydrogen Sulfide in Manhole. (
  • Are your workers and business protected against the potential dangers of hydrogen sulfide (H 2 S) exposure? (
  • The work presented in this thesis involves the use of room temperature ionic liquids (RTILs) as solvents in electrochemical experiments for the detection of hydrogen sulfide. (
  • The reduction of hydrogen sulfide in various room temperature ionic liquids at a platinum electrode, measured using cyclic voltammetry. (
  • With the 1990 amendments to the Clean Air Act, [section 112(n)(5)]( requested a study of hydrogen sulfide emissions associated with oil and gas extraction. (
  • Laboratory and field testing results are presented for reducing dust and/or gas ignitions associated with blasting operations in oil shale and sulfide ore mining applications. (
  • However, not all mining operations that have sulfide-bearing material result in ARD. (
  • Hydrogen sulfide is slightly soluble (it can dissolve) in water and can be found in geothermal springs and some swamps. (