Metals: Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)Zinc: A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.Metals, Alkali: Metals that constitute group 1(formerly group Ia) of the periodic table. They are the most strongly electropositive of the metals. Note that HYDROGEN is not considered an alkali metal even though it falls under the group 1 heading in the periodic table.Cobalt: A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.Copper: A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.Metals, Alkaline Earth: Metals that constitute the group 2 (formerly group IIa) of the periodic table.Manganese: A trace element with atomic symbol Mn, atomic number 25, and atomic weight 54.94. It is concentrated in cell mitochondria, mostly in the pituitary gland, liver, pancreas, kidney, and bone, influences the synthesis of mucopolysaccharides, stimulates hepatic synthesis of cholesterol and fatty acids, and is a cofactor in many enzymes, including arginase and alkaline phosphatase in the liver. (From AMA Drug Evaluations Annual 1992, p2035)Cations, Divalent: Positively charged atoms, radicals or groups of atoms with a valence of plus 2, which travel to the cathode or negative pole during electrolysis.Chromium: A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.Iron: 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.Lead: A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.19, symbol Pb. (Dorland, 28th)Chelating Agents: Chemicals that bind to and remove ions from solutions. Many chelating agents function through the formation of COORDINATION COMPLEXES with METALS.Mercury: A silver metallic element that exists as a liquid at room temperature. It has the atomic symbol Hg (from hydrargyrum, liquid silver), atomic number 80, and atomic weight 200.59. Mercury is used in many industrial applications and its salts have been employed therapeutically as purgatives, antisyphilitics, disinfectants, and astringents. It can be absorbed through the skin and mucous membranes which leads to MERCURY POISONING. Because of its toxicity, the clinical use of mercury and mercurials is diminishing.Soil Pollutants: Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.Metals, Rare Earth: A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.Ions: An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.Coordination Complexes: Neutral or negatively charged ligands bonded to metal cations or neutral atoms. The number of ligand atoms to which the metal center is directly bonded is the metal cation's coordination number, and this number is always greater than the regular valence or oxidation number of the metal. A coordination complex can be negative, neutral, or positively charged.Metal Ceramic Alloys: The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.Magnesium: A metallic element that has the atomic symbol Mg, atomic number 12, and atomic weight 24.31. It is important for the activity of many enzymes, especially those involved in OXIDATIVE PHOSPHORYLATION.Binding Sites: The parts of a macromolecule that directly participate in its specific combination with another molecule.Metalloproteins: Proteins that have one or more tightly bound metal ions forming part of their structure. (Dorland, 28th ed)Spectrophotometry, Atomic: Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.Metals, Light: Metals with low specific gravity, typically smaller than 5, characterized by a single valence (1, 2, or 3), a simple spectrum, strong electromotive force (positive), and colorless compounds. (From Grant & Hackh's Chemical Dictionary, 5th ed)Kinetics: The rate dynamics in chemical or physical systems.Dental Alloys: A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.Water Pollutants, Chemical: Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.Chromium Alloys: Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.Models, Molecular: Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.WeldingCations: Positively charged atoms, radicals or groups of atoms which travel to the cathode or negative pole during electrolysis.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Metallurgy: The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)Trace Elements: A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Catalysis: The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.Hydrogen-Ion Concentration: The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Edetic Acid: A chelating agent that sequesters a variety of polyvalent cations such as CALCIUM. It is used in pharmaceutical manufacturing and as a food additive.Aluminum: A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98.Stainless Steel: Stainless steel. A steel containing Ni, Cr, or both. It does not tarnish on exposure and is used in corrosive environments. (Grant & Hack's Chemical Dictionary, 5th ed)Arsenic: A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)Environmental Monitoring: The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.Titanium: A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)Alloys: A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.Amino Acid Sequence: The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.Oxidation-Reduction: 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).Organometallic Compounds: A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)Spectrometry, X-Ray Emission: The spectrometric analysis of fluorescent X-RAYS, i.e. X-rays emitted after bombarding matter with high energy particles such as PROTONS; ELECTRONS; or higher energy X-rays. Identification of ELEMENTS by this technique is based on the specific type of X-rays that are emitted which are characteristic of the specific elements in the material being analyzed. The characteristic X-rays are distinguished and/or quantified by either wavelength dispersive or energy dispersive methods.Gallium: A rare, metallic element designated by the symbol, Ga, atomic number 31, and atomic weight 69.72.Crystallography, X-Ray: The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Gold Alloys: Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.PhenanthrolinesProtein Binding: The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.Environmental Pollution: Contamination of the air, bodies of water, or land with substances that are harmful to human health and the environment.Escherichia coli: A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.Palladium: A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.Industrial Waste: Worthless, damaged, defective, superfluous or effluent material from industrial operations.Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Tungsten: Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.Protein Conformation: The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).Electron Spin Resonance Spectroscopy: A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.Histidine: An essential amino acid that is required for the production of HISTAMINE.Heavy Metal Poisoning, Nervous System: Conditions associated with damage or dysfunction of the nervous system caused by exposure to heavy metals, which may cause a variety of central, peripheral, or autonomic nervous system injuries.Environmental Pollutants: Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.Substrate Specificity: A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.Vanadium: A metallic element with the atomic symbol V, atomic number 23, and atomic weight 50.94. It is used in the manufacture of vanadium steel. Prolonged exposure can lead to chronic intoxication caused by absorption usually via the lungs.Zinc Compounds: Inorganic compounds that contain zinc as an integral part of the molecule.Manganese Compounds: Inorganic chemicals that contain manganese as an integral part of the molecule.Bacterial Proteins: Proteins found in any species of bacterium.Uranium: Uranium. A radioactive element of the actinide series of metals. It has an atomic symbol U, atomic number 92, and atomic weight 238.03. U-235 is used as the fissionable fuel in nuclear weapons and as fuel in nuclear power reactors.Tin: A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71.Magnetic Resonance Spectroscopy: Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).Molecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Corrosion: The gradual destruction of a metal or alloy due to oxidation or action of a chemical agent. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Gold: A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.Oxides: Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.Steel: A tough, malleable, iron-based alloy containing up to, but no more than, two percent carbon and often other metals. It is used in medicine and dentistry in implants and instrumentation.Models, Chemical: Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.Ferrous Compounds: Inorganic or organic compounds that contain divalent iron.Lanthanoid Series Elements: Elements of the lanthanoid series including atomic number 57 (LANTHANUM) through atomic number 71 (LUTETIUM).Thlaspi: A plant genus of the family BRASSICACEAE that is grown in rock gardens. T. arvense is grown for its large, round ornamental seed pods. The common name of pennycress usually refers to this genus but may also refer to the genus Microthlaspi.Temperature: The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.RNA, Catalytic: RNA that has catalytic activity. The catalytic RNA sequence folds to form a complex surface that can function as an enzyme in reactions with itself and other molecules. It may function even in the absence of protein. There are numerous examples of RNA species that are acted upon by catalytic RNA, however the scope of this enzyme class is not limited to a particular type of substrate.Water Pollution, Chemical: Adverse effect upon bodies of water (LAKES; RIVERS; seas; groundwater etc.) caused by CHEMICAL WATER POLLUTANTS.Catalytic Domain: The region of an enzyme that interacts with its substrate to cause the enzymatic reaction.Mercury PoisoningMolybdenum: A metallic element with the atomic symbol Mo, atomic number 42, and atomic weight 95.94. It is an essential trace element, being a component of the enzymes xanthine oxidase, aldehyde oxidase, and nitrate reductase. (From Dorland, 27th ed)Metalloids: A class of nonmetals such as arsenic that have some of the chemical properties of a metal.Platinum: Platinum. A heavy, soft, whitish metal, resembling tin, atomic number 78, atomic weight 195.09, symbol Pt. (From Dorland, 28th ed) It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae".Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Ferric Compounds: Inorganic or organic compounds containing trivalent iron.Beryllium: Beryllium. An element with the atomic symbol Be, atomic number 4, and atomic weight 9.01218. Short exposure to this element can lead to a type of poisoning known as BERYLLIOSIS.Apoenzymes: The protein components of enzyme complexes (HOLOENZYMES). An apoenzyme is the holoenzyme minus any cofactors (ENZYME COFACTORS) or prosthetic groups required for the enzymatic function.Terbium: Terbium. An element of the rare earth family of metals. It has the atomic symbol Tb, atomic number 65, and atomic weight 158.92.Ytterbium: Ytterbium. An element of the rare earth family of metals. It has the atomic symbol Yb, atomic number 70, and atomic weight 173. Ytterbium has been used in lasers and as a portable x-ray source.Spectrophotometry, Ultraviolet: Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Iron-Binding Proteins: Proteins that specifically bind to IRON.MiningSemiconductors: Materials that have a limited and usually variable electrical conductivity. They are particularly useful for the production of solid-state electronic devices.Rhodium: Rhodium. A hard and rare metal of the platinum group, atomic number 45, atomic weight 102.905, symbol Rh. (Dorland, 28th ed)EthylenediaminesSulfhydryl Compounds: Compounds containing the -SH radical.Clioquinol: A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide.
Metal-acid. In the laboratory, H. 2 is usually prepared by the reaction of dilute non-oxidizing acids on some reactive metals ... Alkali metal Alkaline earth metal Lan-thanide Actinide Transition metal Post-​transition metal Metalloid Reactive nonmetal ... This species is central to discussion of acids. Under the Brønsted-Lowry acid-base theory, acids are proton donors, while bases ... Hydrogen gas was first artificially produced in the early 16th century by the reaction of acids on metals. In 1766-81, Henry ...
Interplay between Metal Ions and Nucleic Acids. Metal Ions in Life Sciences. 10. Springer. pp. 249-268. doi:10.1007/978-94-007- ... and metal-ion coordination. This is due to the limited number of functional groups of the nucleic acid monomers: while proteins ... Among this group are the metal selective deoxyribozymes such as Pb2+-specific 17E,[14] UO22+-specific 39E,[15] and Na+-specific ... "Nucleic Acids Research. 33 (19): 6151-63. doi:10.1093/nar/gki930. PMC 1283523. PMID 16286368.. ...
Sulfurous acid. *Sulfur dioxide. MetalsEdit. Main article: Oligodynamic effect. TerpenesEdit. *Thymol ... Peroxy and peroxo acidsEdit. Peroxycarboxylic acids and inorganic peroxo acids are strong oxidants and extremely effective ... Peroxymonosulfuric acid. PhenolicsEdit. Phenolics are active ingredients in some household disinfectants. They are also found ... Lactic acid is a registered disinfectant. Due to its natural and environmental profile, it has gained importance in the market ...
3- Metal Leaching and Acid Rock Drainage - Modern industrial scale mining of copper based ore bodies can release heavy metals ( ... Lastly, the presence of sulphuric acid accelerates the leaching of toxic metals. The entire process is called ML/ARD, and is ... variable levels of trace metals, including boron, arsenic and strontium • elevated ammonia • naphthenic acids, phenols, ... Any heavy metals stored in dissolved or solid form in the tailings will pose a risk to Taseko River water quality. All of these ...
treating metal, metal hydroxide or metal oxide with sulfuric acid. Zn + H2SO4 → ZnSO4 + H2. Cu(OH)2 + H2SO4 → CuSO4 + 2 H2O. ... 4), also called the bisulfate ion.[b] Sulfuric acid is classified as a strong acid; in aqueous solutions it ionizes completely ... 4). In other words, the sulfuric acid behaves as a Brønsted-Lowry acid and is deprotonated. Bisulfate has a molar mass of ... 4, sulfuric acid. Organic sulfate esters, such as dimethyl sulfate, are covalent compounds and esters of sulfuric acid. The ...
Structure of the metal chelator phytic acid.. Relatively strong reducing acids can have antinutrient effects by binding to ... Uric acid[edit]. Uric acid is by far the highest concentration antioxidant in human blood. Uric acid (UA) is an antioxidant ... Besides ascorbate, medically important conditional pro-oxidants include uric acid and sulfhydryl amino acids such as ... Notable examples are oxalic acid, tannins and phytic acid, which are high in plant-based diets.[32] Calcium and iron ...
For example, it oxidizes aldehydes to carboxylic acids. Such reactions often work best when the silver oxide is prepared in ... Biedermann, George; Sillén, Lars Gunnar (1960). "Studies on the Hydrolysis of Metal Ions. Part 30. A Critical Survey of the ... A slurry of Ag2O is readily attacked by acids: Ag2O + 2 HX → 2 AgX + H2O. where HX = HF, HCl, HBr, or HI, HO2CCF3. It will also ...
Dithianes - Removed by metal salts or oxidizing agents.. Carboxylic acid protecting groups[edit]. Protection of carboxylic ... Acetyl (Ac) - Removed by acid or base (see Acetoxy group).. *Benzoyl (Bz) - Removed by acid or base, more stable than Ac group. ... Silyl esters - Removed by acid, base and organometallic reagents.. *Orthoesters - Removed by mild aqueous acid to form ester, ... Methylthiomethyl ether - Removed by acid.. *Pivaloyl (Piv) - Removed by acid, base or reductant agents. It is substantially ...
Claussen, C.A.; Long, E.C. (1999). "Nucleic Acid Recognition by Metal Complexes of Bleomycin". Chem. Rev. 99 (9): 2797-2816. ... Nonribosomal peptides and polyketides are synthesized from amino acids and short carboxylic acids by NRPSs and PKSs, ... DNA cleavage by bleomycin depends on oxygen and metal ions, at least in vitro. The exact mechanism of DNA strand scission is ... unresolved, but it has been suggested that bleomycin chelates metal ions (primarily iron), producing a pseudoenzyme that reacts ...
Electron-dense compounds of heavy metals are typically used.. Phosphotungstic acid[edit]. Phosphotungstic acid is a common ... Acid fuchsine[edit]. Acid fuchsine may be used to stain collagen, smooth muscle, or mitochondria. Acid fuchsine is used as the ... Acid fuchsine stains cytoplasm in some variants of Masson's trichrome. In Van Gieson's picro-fuchsine, acid fuchsine imparts ... periodic acid, phosphomolybdic acid, potassium ferricyanide, potassium ferrocyanide, ruthenium red, silver nitrate, silver ...
The alloy is treated with hydrochloric acid. The metal is extracted from the solution as oxalate and converted to oxide by ... Alkali metal Alkaline earth metal Lan-thanide Actinide Transition metal Post-​transition metal Metalloid Reactive nonmetal ... Ytterbium metal behaves similarly to europium metal and the alkaline earth metals, dissolving in ammonia to form blue electride ... The oxide is reduced to metal by heating with lanthanum, aluminium, cerium or zirconium in high vacuum. The metal is purified ...
... is an excellent chelating agent, binding metals by making them soluble. It is used to remove and discourage the ... The closely related acids isocitric acid, aconitic acid, and propane-1,2,3-tricarboxylic acid (tricarballylic acid, carballylic ... Citric acid cycle[edit]. Main article: Citric acid cycle. Citrate is an intermediate in the TCA cycle (aka TriCarboxylic Acid ... Citric acid is a weak organic acid that has the chemical formula C. 6H. 8O. 7. It occurs naturally in citrus fruits. In ...
Alkali metal Alkaline earth metal Lan-thanide Actinide Transition metal Post-​transition metal Metalloid Reactive nonmetal ... It does not react with a 1:1 mixture of nitric acid (HNO3) and 48% hydrofluoric acid (HF), possibly due to the formation of an ... Corbett, J. D. (1981). "Extended metal-metal bonding in halides of the early transition metals". Acc. Chem. Res. 14 (8): 239- ... The radioactive isotope 46Sc is used in oil refineries as a tracing agent.[48] Scandium triflate is a catalytic Lewis acid used ...
3.1 Acid cracking. *3.2 Alkaline cracking. *3.3 Extraction of rare-earth metals from monazite ore ... Extraction of rare-earth metals from monazite ore[edit]. Process flow diagram for extraction of rare-earth metals from monazite ... The acid methods led to the generation of considerable acid waste, and loss of the phosphate content of the ore. ... Digestion: Crushed monazite is mixed with highly concentrated sulfuric acid (93% acid) at feed temperatures of 150 to 180 °C. ...
Above about 900 °C, the oxide reverts to palladium metal and oxygen gas. It is not attacked by acids.[1] ... The Pd atoms are square planar as expected for a d8 metal ion and the oxygen atoms are approximately tetrahedral.[2] The ... Its susceptibility to attack by acids decreases at lower water content. The hydrated oxide (hydroxide), PdO.nH2O can be ... It is the only well characterised oxide of palladium.[1] It is prepared by treating the metal with oxygen. ...
or by heating aluminum metal in a sulfuric acid solution: 2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2↑. From alum schists[edit]. The alum ... Aluminium sulphate may be made by adding aluminium hydroxide, Al(OH)3, to sulfuric acid, H2SO4: 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 ... The precipitate is then dissolved in sulfuric acid.[6] Uses[edit]. Aluminium sulfate is used in water purification and as a ... In the roasting process, sulfuric acid is formed and acts on the clay to form aluminium sulfate, a similar condition of affairs ...
With acid chlorides, one obtains the amidocarboxylic acid, such as hippuric acid[23] and acetylglycine.[24] With nitrous acid, ... It also has preservative properties, perhaps owing to its complexation to metal ions. Metal glycinate complexes, e.g. copper(II ... It is the simplest amino acid (since carbamic acid is unstable), with the chemical formula NH2‐CH2‐COOH. Glycine is one of the ... Amino acid neurotransmitter. References[edit]. *^ The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (11th ...
... is a weak acid, forming hydroperoxide or peroxide salts with many metals. ... 4) in sulfuric acid: (. NH. 4. ). 2. S. 2. O. 8. +. 2. H. 2. O. ⟶. H. 2. O. 2. +. 2. (. NH. 4. ). HSO. 4. {\displaystyle {\ce ... Peroxy acids, such as peracetic acid and meta-chloroperoxybenzoic acid are also produced using hydrogen peroxide. Hydrogen ... They are involved in the catabolism of very long chain fatty acids, branched chain fatty acids, D-amino acids, polyamines, and ...
The prototype of a protein disulfide bond is the two-amino-acid peptide cystine, which is composed of two cysteine amino acids ... Several metals, such as copper(II) and iron(III) complexes affect this reaction.[citation needed] Alternatively, disulfide ... More aggressive, alkali metals will effect this reaction: RS−SR + 2 Na → 2 NaSR. These reactions are often followed by ... Over 90% of the dry weight of hair comprises proteins called keratins, which have a high disulfide content, from the amino acid ...
Acids and bases. Silicon compounds and calcium compounds. Reactions of metals with non-metals. Pollution and steps to combat ...
"Uncle Acid & the Deadbeats "Blood Lust"". Metal Blade. Retrieved 11 August 2015. Rivadavia, Eduardo. "Blood Lust - Uncle Acid ... "Uncle Acid and the Deadbeats Blood Lust". Rise Above Records. Retrieved 11 August 2015. Bennet, J. (18 July 2014). "Uncle Acid ... Uncle Acid and the Deadbeats member Kevin Starrs initially placed the songs on MySpace and YouTube where they developed a ... Blood Lust is a studio album by British band Uncle Acid and the Deadbeats. It was released in 2011 through Rise Above Records. ...
"Acid Drinkers: Fishdick". metal-archives.com. Retrieved 2017-08-30. ... "Elektrokuted: 17 Metal and Rock classics revisited". discogs.com. Retrieved 2007-09-27. "The Black Album/Come On Feel The Dandy ... such as bluegrass music and death metal. AC/DC's influence has also meant that their individual songs have also been frequently ...
L-Glutamic acid N,N-diacetic acid, tetrasodium salt (GLDA)[edit]. Aminopolycarboxylate-based chelates control metal ions in ... Polyaspartic acid[edit]. Polyaspartic acid, like IDS, binds to calcium and other heavy metal ions. It has a higher value of 7.2 ... its ability to sequester metal ions such as Ca2+ and Fe3+. After being bound by EDTA into a metal complex, metal ions remain in ... Ethylenediamine-N,N′-disuccinic acid (EDDS)[edit]. As a structural isomer of EDTA, ethylenediamine-N,N′-disuccinic acid (EDDS) ...
For example, if NTA, nitrilotriacetic acid, N(CH2CO2H)3 is designated as H3L and forms complexes ML and MHL with a metal ion M ... The product species H3O+ (or D3O+) is a stronger acid than the solute acid, so that it dissociates more easily and its H-O (or ... from a weak aqueous acid to a solvent molecule: HA + H2O = H3O+ + A− or DA + D2O ⇌ D3O+ + A−. The deuterated acid is studied in ... For any given acid or base the two constants are related by pKa + pKb = pKw, so pKa can always be used in calculations. ...
Main article: Acid mine drainage. Another application of geomicrobiology is bioleaching, the use of microbes to extract metals ... produce H2S which precipitates metals as a metal sulfide. This process removed heavy metals from mine waste which is one of the ... Heavy metals are added into soils through many anthropogenic sources such industry and/or fertilizers. Heavy metal interaction ... Some bacteria use metal ions as their energy source. They convert (or chemically reduce) the dissolved metal ions from one ...
... and glutamic acid. While glutamic acid is usually sufficient because amino acid nitrogen is recycled through glutamate as an ... Metal ion binding[edit]. Beyond the iron-sulfur proteins, many other metal cofactors in enzymes are bound to the thiolate ... Cysteine (symbol Cys or C;[3] /ˈsɪstiiːn/)[4] is a semiessential[5] proteinogenic amino acid with the formula HO2CCH(NH2)CH2SH ... More aggressive oxidants convert cysteine to the corresponding sulfinic acid and sulfonic acid. Cysteine residues play a ...
With a metal hydride gives a metal alkoxide salt, hydrolysis of which gives the alcohol, an example of ketone reduction ... fatty acids, and amino acids in most vertebrates, including humans. Ketone bodies are elevated in the blood (ketosis) after ... For example, it also refers to an oxygen atom bonded to a transition metal (a metal oxo). ... Acid/base properties of ketonesEdit. Ketones are far more acidic (pKa ≈ 20) than a regular alkane (pKa ≈ 50). This difference ...
... so it must be biosynthesized from its constituent amino acids, cysteine, glycine and glutamic acid. Glutamic acid and glycine ... Metal ion binding[edit]. Beyond the iron-sulfur proteins, many other metal cofactors in enzymes are bound to the thiolate ... Cysteine (symbol Cys or C;[3] /ˈsɪstiiːn/)[4] is a semi-essential[5] proteinogenic amino acid with the formula HO2CCH(NH2)CH2SH ... More aggressive oxidants convert cysteine to the corresponding sulfinic acid and sulfonic acid. Cysteine residues play a ...
Metal Gear Acid 2 - komputerowa gra karciana wydana przez Konami na konsolę PlayStation Portable w 2005 roku. Jest to taktyczna ... Źródło: „https://pl.wikipedia.org/w/index.php?title=Metal_Gear_Acid_2&oldid=38203605" ...
A list of US medications equivalent to Boric Acid Metal is available on the Drugs.com website. ... Boric Acid Metal is a medicine available in a number of countries worldwide. ... Ingredient matches for Boric Acid Metal. Boric Acid. Boric Acid is reported as an ingredient of Boric Acid Metal in the ... Boric Acid Metal. Boric Acid Metal may be available in the countries listed below. ...
But strong acids can really put on a show. For example, aqua regia, or royal water, is a mixture of two strong acids -- ... a noble metal. This reaction can be put to use. Watch as Reactions employs some acid know-how to explain a chemistry detective ... with even weak acids like vinegar interacting with other materials to wow students. ... hydrochloric and nitric acids -- that can dissolve gold, ... How to spot fake metals with acids (video) American Chemical ...
The legendary Metal Gear series returns with a whole new storyline and card-based gameplay system that focuses on deep tactical ... The legendary Metal Gear series returns with a whole new storyline and card-based gameplay system that focuses on deep tactical ... The legendary Metal Gear series returns with a whole new storyline and card-based gameplay system that focuses on deep tactical ... Mixes the Metal Gear series astounding aesthetics with a unique card-based battle system ...
... hydrochloric acid, makes the stomach capable of dissolving metal. The body produces hydrochloric acid in the beginning stages ... Hydrochloric acids low pH of about two means that it can dissolve metal, so the stomach needs protection from the harsh acid. ... The primary digestive agent in the human stomach, hydrochloric acid, makes the stomach capable of dissolving metal. The body ... The stomach is coated with mucus, enabling food to be broken down by the acid without damaging the stomach lining. When the ...
Hydrogen and table salt, or sodium chloride, is produced when hydrochloric acid reacts with... ... Hydrogen gas is given off when acids react with metals. The other product is a salt, an ionic compound. ... while others only react with strong acids. Certain metals, such as gold, do not react at all unless exposed to a blend of acids ... Hydrogen gas is given off when acids react with metals. The other product is a salt, an ionic compound. Hydrogen and table salt ...
... trace metals basis; CAS No.: 60-00-4; Synonyms: (Ethylenedinitrilo)tetraacetic acid; EDTA; Edathamil; ... Ethylenedinitrilotetraacetic acid; Linear Formula: (HO2CCH2)2NCH2CH2N(CH2CO2H)2; Empirical Formula: C10H16N2O8; available at ... Ethylenediaminetetraacetic acid 99.995% trace metals basis Synonym: (Ethylenedinitrilo). tetraacetic acid, EDTA, Edathamil, ... c acid is a water-soluble chelating agent that can form complexes with metal ions. ...
Aluminum metal dissolves in hydrochloric acid. What volume, in mL, of 1.58 M HCl is needed to completely dissolve 3.200 g of ...
Acids are reactive, and even weak acids like vinegar can wow students with their reactivity. But strong acids can really put on ... And aqua regia, or royal water, is a mixture of hydrochloric and nitric acids that can dissolve gold, a noble metal. Watch as ... Reactions uses some acid know-how to tell a chemistry detective story and sort real gold from the imposters. ... a show, dissolving otherwise relatively inert metals. ... How to Spot Fake Metals with Acids. Thu, 12/21/2017 - 2:25pm ...
Eco-friendly tree-like porous carboxyl modified cellulose nanofiber membranes as highly efficient adsorbents for heavy metal ... Abdel-Halim ES, Al-Hoqbani AA (2015) Utilization of poly(acrylic acid)/cellulose graft copolymer for dye and heavy metal ... Labet M, Thielemans W (2012) Citric acid as a benign alternative to metal catalysts for the production of cellulose-grafted- ... Tree-like cellulose nanofiber membranes modified by citric acid for heavy metal ion (Cu2+) removal. ...
... metals in biology and medicine, metals toxicology and metals in the environment, metal interactions with biomolecules and ... The journal welcomes papers relating to metalloenzymes and model compounds, metal-based drugs, biomaterials, biocatalysis and ... Coordination Behavior of 3-Ethoxycarbonyltetronic Acid towards Cu(II) and Co(II) Metal Ions. Giorgos Athanasellis,1 Georgia ... Tetronic acids, 4-hydroxy-5H-furan-2-ones, constitute a class of heterocyclic compounds with potent biological and ...
... Copyright: Attribution Non-Commercial (BY-NC) ... Metal Dissolution Process ( Stopping Nitric acid fumes with hydrogen peroxide ). Uploaded by AFLAC ............ ...
Acids Hydrochloric acid Sulphuric acid Nitric acid Ethanoic acid. METALS AND ACIDS. Metals Magnesium Iron Sodium Calcium. Acids ... METALS AND ACIDS. Metals Magnesium Iron Sodium Calcium. METALS AND ACIDS. Metals Magnesium Iron Sodium Calcium. ... Acids Hydrochloric acid Sulphuric acid Nitric acid Ethanoic acid. METALS AND ACIDS. Metals Magnesium Iron Sodium Calcium. Acids ... METALS AND ACIDS. METALS AND ACIDS. Metals Magnesium Iron Sodium Calcium. METALS AND ACIDS. Metals Magnesium Iron Sodium ...
Survival of the fittest: overcoming oxidative stress at the extremes of Acid, heat and metal.. Maezato Y1, Blum P2. ... Geothermal heat, sulfuric acid and transition metals contribute both individually and synergistically under aerobic conditions ... Sulfuric acid and metals originating from sulfidic ores catalyze oxidative reactions attacking microbial cell surfaces ... Survival of the Fittest: Overcoming Oxidative Stress at the Extremes of Acid, Heat and Metal ...
"Interweaving of triple-helical and extended metal-O-metal single-helical chains with the same helix axis in a 3D metal-organic ... Studies on Oligomer Metal Complexes Derived from Bisamic Acid of Pyromellitic Dianhydride and 4-Bromoaniline. Yogesh S. Patel ... B. G. Tweedy, "Plant extracts with metal ions as potential antimicrobial agents," Phytopathology, vol. 55, pp. 910-914, 1964. ... tetracarboxylic acid, bpy = 4,4′-bipyridine)," Spectrochimica Acta-Part A: Molecular and Biomolecular Spectroscopy, vol. 81, no ...
Metal Gear Acid 2 received generally positive reviews from critics and the public. "Metal Gear Acid 2 Mobile - Konami Europe". ... It was released along with the Metal Gear Acid soundtrack on December 21, 2005, in the two-disc compilation Metal Gear Acid 1 ... Acid 2 is the sequel to the original Metal Gear Acid, with the story set sometime after the events of the previous game. Like ... Metal Gear Acid 2 (Japanese: メタルギア アシッド2, Hepburn: Metaru Gia Ashiddo Tsū), stylized as METAL GEAR AC!D², is a turn-based ...
174as) Theoretical Investigations of Lewis Acid-Catalyzed Alkane C-H Activation in Metal-Modified Zeolites. ... C-H Activation over metal-modified zeolites such as Ga/H-MFI yields higher selectivities to alkenes and aromatics than those ... in Zn/H-MFI and that the mechanistic insights obtained here are of broader relevance to the rational design of other metal- ...
... or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with ... A method of dissolving metal oxides using a mixture of a di- ... Metal oxides and metal salts are dissolved by treatment with ... disulfurous acid, dithionous acid, hydroxymethylsulfinic acid (acid of SFS), hydroxymethyl sulfonic acid, and their salts; ... The preferred acid is 1-hydroxyethylidene-1,1-diphosphonic acid, which can also be used with other scale removing acids and ...
Amino acid metal chelates have been developed to be used as food fortificants and therapeutic agents in animal feeds and ... Amino Acid Metal Chelates Chelated Amino Acids. Spectrum carries a large selection of chelated amino acids used as a supplement ... Spectrum specializes in providing the top chelated amino acids but if you do not see the product, grade or form of the ...
... toxic metals; heavy metals; water pollution; metals precipitation; mine water remediation; metals removal; AMD neutralization; ... Toxic Metals Removal in Acid Mine Drainage Treatment Wetlands. Smith, Ronald T.; Comer, John B.; Ennis, Margaret V.; Branam, ... The removal of trace metals from acid mine drainage was studied in four constructed wetlands on abandoned mine lands in ... Title: Harnessing the Metal-Ligand Multiple Bond: Paths towards New Utilizable Metal Complexes and their Applications  Author: ...
... ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy sulfonic acid electroplating ... acids. The metals and metal alloys include but are not limited to tin, lead, copper, nickel, zinc, tin/lead, tin/lead/copper, ... The use of alkali metal, alkaline earth metal, ammonium and substituted ... ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy sulfonic acid electroplating ...
Comparison of arsenic acid with phosphoric acid in the interaction with a water molecule and an alkali/alkaline-earth metal ... In the metal complexes, the arsenic acid has a slightly larger binding distance (by 0.07-1.0 Å) and weaker binding energy ... complexes of the arsenic acid/anions with those of the phosphoric acid/anions [i.e., H(m)PO(4)(-(3-m)) vs H(m)AsO(4)(-(3-m)) (m ... We compared the monohydrated structures and the alkali/alkaline-earth metal (Na(+), K(+), Mg(2+) and Ca(2+)) ...
Cooperative Transition-Metal and Chiral Brønsted Acid Catalysis: Enantioselective Hydrogenation of Imines To Form Amines†. ... Addition and Correction to Complete Field Guide to Asymmetric BINOL-Phosphate Derived Brønsted Acid and Metal Catalysis: ... Thierry Ollevier, Chiral Lewis Acids in Organic Synthesis, 2017, 59. CrossRef. *5. Jing Meng, Xing-Han Li, Zhi-Yong Han, ... Enantioselective Hydroaminomethylation of Olefins Enabled by Rh/Brønsted Acid Relay Catalysis, Organic Letters, 2017, 19, 5, ...
Metals extracted from sediment by digestion, or with a different acid than HCl are not simultaneously extracted metals. By ... As noted above, treating metals-containing sediments with HCl liberates metal ions into the acid solution that were previously ... Predicting the toxicity of metal-contaminated field sediments using interstitial concentration of metals and acid-volatile ... all the metal ions). The concentrations of metals in the acid solution can be measured by a number of analytical chemistry ...
The Metal Ions in Life Sciences series links coordination chemistry and biochemistry in their widest sense and thus increases ... our understanding of the relationship between the chemistry of metals and ... Biosensors DNA Peptide nucleic acids (PNA RNA metal ion-nucleic acid interactions ... MILS-10: Interplay between Metal Ions and Nucleic Acids provides in an authoritative and timely manner in 12 stimulating ...
  • The rare earth metals have remarkable chemical properties but are so evenly dispersed throughout the earth's crust that economically attractive concentrations are extremely rare. (usea.org)
  • Comparison of arsenic acid with phosphoric acid in the interaction with a water molecule and an alkali/alkaline-earth metal cation. (nih.gov)
  • Despite the increased van der Waals radius of As, the hydrated structures of both P and As systems show very close similarity (within 0.25 Å in the P/As···O(water) distance and within a few kJ/mol in binding energy) because of the increased induction energies by more polar arsenic acid/anons and slightly increased dispersion energy by a larger size of the As atom. (nih.gov)
  • A batch experiment was conducted to examine the effects of six low-molecular-weight organic acids on the mobilization of arsenic and trace metals from a range of contaminated soils. (salford.ac.uk)
  • Alozie, N , Heaney, N and Lin, C 2018, 'Biochar immobilizes soil-borne arsenic but not cationic metals in the presence of low-molecular-weight organic acids' , Science of the Total Environment, 630 , pp. 1188-1194. (salford.ac.uk)
  • A batch experiment was conducted to examine the effects of biochar on the behaviour of soil-borne arsenic and metals that were mobilized by three low-molecular-weight organic acids. (salford.ac.uk)
  • Arsenic, for example, has the shininess of a metal but does not conduct heat or electricity very well. (factmonster.com)
  • Eco-friendly tree-like porous carboxyl modified cellulose nanofiber membranes as highly efficient adsorbents for heavy metal ions were fabricated by the electrospinning of cellulose acetate (CA)/tetrabutylammonium chloride (TBAC)/manganese dioxide (MnO 2 ) solution, and subsequent deacetylation treatment to turn CA into cellulose and citric acid modification to graft carboxyl group on the surface of cellulose nanofibers. (springer.com)
  • The effects of pH, initial ion concentrations and contact time on the removal capacity of heavy metal ions were investigated. (springer.com)
  • Božić D, Gorgievski M, Stanković V, Štrbac N, Šerbula S, Petrović N (2013) Adsorption of heavy metal ions by beech sawdust: kinetics, mechanism and equilibrium of the process. (springer.com)
  • As a result, when water bearing heavy metal ions is in contact with sediment, the ions tend to accumulate in the sediment at elevated concentrations. (wikipedia.org)
  • When dissolved in water, sulfide has a high affinity for numerous heavy metal ions. (wikipedia.org)
  • An excess amount of heavy metal ions in aquatic environments is known to cause severe damage to human health and aquatic life. (scielo.org.za)
  • The complete removal of toxic heavy metal ions that are incompatible with biological systems requires expensive treatment in order to produce water that is again useful for domestic use (Monteagudo and Ortiz, 2000). (scielo.org.za)
  • In recent years, the adsorption process has also received much attention and has become one of the more popular methods for the removal of heavy metal ions from wastewater, because of its competitive and effective process. (scielo.org.za)
  • For heavy metal ions, this building complex helps the absorption and filtration of blood plasma. (eurekaselect.com)
  • M96 may be involved in the activation of MT (metallothionein) genes in response to heavy-metal ions. (antibody-antibodies.com)
  • Applying pH 6, and an acetic acid based carrier electrolyte, the electropherograms of the metal/humic acid systems appear to be well developed. (openrepository.com)
  • The experiments of me-thanol carbonylation to acetic acid and acetic anhydride have rerealed the sequence of catalytic reactivity RhNiRuCo. (cnki.com.cn)
  • Oxalic acid and acetic acid had the strongest and weakest capacity to mobilize the investigated elements, respectively. (salford.ac.uk)
  • Hydrolysis of the ester gave acetic acid pyridine resorcinarene (APRes) in good yield. (byu.edu)
  • Vernetti, Samantha Sizemore, "Two New Resorcinarenes: A Pyridine & Acetic Acid Ligand for Metal Coordination and a Deep-Cavity Nitroquinoxaline Resorcinarene" (2006). (byu.edu)
  • Asia-Pacific is the worlds largest market of acetic acid, which consumed more than half of the total global demand in 2012, and also for most of its applications that include vinyl acetate monomer, purified terephthalic acid,acetic anhydride, and ester solvents - ethyl acetate & butyl acetate. (marketsandmarkets.com)
  • The demand for acetic acid in the region is anticipated to grow at a CAGR of about 5.01% from 2013 to 2018. (marketsandmarkets.com)
  • It is estimated that China and Taiwan are the biggest consumers of acetic acid in the region, followed by Japan in 2012. (marketsandmarkets.com)
  • India is expected to be the fastest growing market of acetic acid. (marketsandmarkets.com)
  • Acetic acid is the main feedstock to manufacture vinyl acetate monomer, which was at the forefront in terms of volumetric consumption in 2012. (marketsandmarkets.com)
  • It is mainly driven by the growing demand of polyvinyl acetates and vinyl alcohols, which in turn are accelerating the demand for acetic acid. (marketsandmarkets.com)
  • The demand from the PTA manufacturing segment is estimated to grow at a very high pace, next only to ester solvents, which is the strongest growth segment of acetic acid. (marketsandmarkets.com)
  • During the removal process, the abundant carboxyl groups (-COOH) transferred to carboxylate ions (-COO − ) which had stronger ion exchange ability to the metal ion adsorption. (springer.com)
  • Choi M, Jang J (2008) Heavy metal ion adsorption onto polypyrrole-impregnated porous carbon. (springer.com)
  • Chu B, Hsiao BS, Ma H (2013) Electrospun nanofibrous membrane for heavy metal ion adsorption. (springer.com)
  • Ferrari E, Ranucci E, Edlund U, Albertsson A (2015) Design of renewable poly(amidoamine)/hemicellulose hydrogels for heavy metal adsorption. (springer.com)
  • Gurgel LVA, Gil LF (2009) Adsorption of Cu(II), Cd(II) and Pb(II) from aqueous single metal solutions by succinylated twice-mercerized sugarcane bagasse functionalized with triethylenetetramine. (springer.com)
  • Studying sterically stabilized HfO2 and ZrO2 NCs using H-1 solution NMR and IR spectroscopy as well as elemental analysis, this paper demonstrates the reversible exchange of initial oleic acid ligands for octylamine and self-adsorption of oleic acid at NC surfaces. (ugent.be)
  • We argue that this behavior stems from the dissociative adsorption of carboxylic acids at the oxide surface. (ugent.be)
  • The adsorption of heavy metal cations, Pb(II), Cd(II), Cu(II), Zn(II) and Fe(II) from aqueous solution by newly-synthesized tamarind 4-hydroxybenzoic acid (THBA) resin was investigated. (scielo.org.za)
  • The distribution coefficients (K d ) and percentage adsorption of metal ions on resin were determined by batch methods using atomic absorption spectrophotometry (AAS). (scielo.org.za)
  • 1997). Adsorption using commercial activated carbon (CAC) can remove metal ions from waste-water, such as Cd(II), Ni(II), Cr(III) and Cu(II) (Ramos et al. (scielo.org.za)
  • Improving the enzymatic hydrolysis of dilute acid pretreated wheat straw by metal ion blocking of non-productive cellulase adsorption on lignin. (semanticscholar.org)
  • Adsorption of cationic heavy metals on biochar in the presence of LMWOAs is unlikely to be a mechanism responsible for the impeded uptake of heavy metals by plants growing in heavy metal-contaminated soils. (salford.ac.uk)
  • Although the highly porous Zr(BTC) had good adsorptive sites, its adsorption capacity was enhanced by incorporation of HPW, this was attributed to availability of added acid sites for adherence of basic BT. (diva-portal.org)
  • In this report, we present the complexation reactions of 3-ethoxycarbonyl tetronic acids with acetates and chlorides of Cu(II) and Co(II). (hindawi.com)
  • Sulfuric acid and metals originating from sulfidic ores catalyze oxidative reactions attacking microbial cell surfaces including lipids, proteins and glycosyl groups. (nih.gov)
  • This procedure constitutes an attractive and environmentally favorable alternative to well-established asymmetric hydrogenation reactions with precious-metal catalysts. (wiley.com)
  • We report on the functionalization of the C(alpha)-tetrasubstituted THF amino acid rac-5 by copper(I) catalyzed N-arylation reactions. (uni-regensburg.de)
  • The spontaneous hydrolyses of lactic acid O-phenyl phosphate (I) and, to a lesser extent, 3-hydroxybutyric acid O-phenyl phosphate (II) have been investigated and compared with similar intramolecular and bimolecular reactions. (elsevier.com)
  • Cai J, Lei M, He JRZ, Chen T, Liu S, Fu SH et al (2016) Electrospun composite nanofiber mats of [email protected] modified montmorillonite for heavy metal ion removal: design, characterization, evaluation of absorption performance. (springer.com)
  • The results demonstrate the potential of CE for the characterization of humics in aquatic systems in relation to the binding of metal ions. (openrepository.com)
  • The Mn 2+ -catalyzed hydrolysis of I exhibits saturation kinetics, consistent with the enhanced reactivity of the metal ion-substrate complex. (elsevier.com)
  • The hydrolysis of I as catalyzed by a variety of divalent metal ions suggests an optimal metal ion size. (elsevier.com)
  • The dependence of the second-order rate constant for the metal-catalyzed hydrolysis on leaving group pK a ,β 1g , decreases significantly relative to β 1g for the spontaneous hydrolysis. (elsevier.com)
  • C.-Z. Mei, J.-X. Wang, and W.-W. Shan, "Synthesis and crystal structure of an infinite sandwich-type Cu(I) coordination polymer: {[Cu(abpy)H3bptc) · (H2O)}n constructed by a tetracarboxylic acid," Chinese Journal of Structural Chemistry , vol. 30, no. 8, pp. 1194-1198, 2011. (hindawi.com)
  • In this context, we demonstrate a green and single step synthesis method to obtain monometallic gold and silver, and bimetallic gold-silver alloy nanoparticles with precise composition and surface functionality control by employing L-tryptophan and L-tyrosine amino acids as reducing and stabilizing agent. (nsti.org)
  • Nevertheless, so far, the reported MOFs with high proton conduction are hardly environment-friendly to fulfill the sustainable development criteria, due to the involvement of either toxic metal ions or time and effort-consuming organic linker synthesis. (ens.fr)
  • iron metal is added to a solution of copper (II) nitrate 2. (jiskha.com)
  • The polymeric ligand on treatment with a solution of Copper chloride gave the corresponding metal complex. (scirp.org)
  • Copper, silver and gold are not active enough to react with these acids. (chemicalformula.org)
  • This catalytic performance has been compared with that of the copper trimesate Basolite C-300 or HKUST-1 of formula Cu-3(BTC)(2) and the aluminium terephthalate Basolite A-100 or MIL-53(Al) of formula Al(OH)(BDC) as well as with some homogeneous (ZnCl2, Cu(NO3)(2), Al(NO3)(3)) and heterogeneous (Fe3+-exchanged Y-zeolite) Lewis acids. (upv.es)
  • like burning computer wire to expose copper, melting circuit boards in pots to extract lead and other metals, or dousing the boards in powerful acid to remove gold. (nativeartscircle.org)
  • 2. The method of claim 1, wherein the sulfonic acid is an alkyl sulfonic acid. (patentgenius.com)
  • 4. The method of claim 1, wherein the salt is a salt of 2-hydroxy ethyl sulfonic acid. (patentgenius.com)
  • 10. The method of claim 9, wherein up to 50% of the methane sulfonic acid is replaced by sodium isethionate. (patentgenius.com)
  • 15. The electroplating bath of claim 14, wherein the sulfonic acid salt is a salt of 2-hydroxy ethyl sulfonic acid. (patentgenius.com)
  • 16. The electroplating bath of claim 15, wherein the sulfonic acid salt is sodium isethionate. (patentgenius.com)
  • In this frame, for the first time a synthetic strategy has been established for amine derivatization in amino acids into 1,2,4-triazoles. (mdpi.com)
  • The removal of trace metals from acid mine drainage was studied in four constructed wetlands on abandoned mine lands in southwestern Indiana. (iu.edu)
  • Approaches currently used for remediating acid mine drainage (chiefly active chemical treatment and passive bioremediation systems) have a number of major detractions, including their failure to recover potentially valuable metals from these waters. (geoscienceworld.org)
  • The presence of amino acid shell on the surface of metal nanoparticles is observed to provide biological identity to these inorganic nanoparticles, which allows these nanoparticles' surface to behave like natural enzymes. (nsti.org)
  • Except for sulfuric acid, only trace amounts of inorganic acids were detected on these samples. (cdc.gov)
  • Oh, let us not forget that, like other strong inorganic acids, muriatic acid is a poison. (wordpress.com)
  • Chelation, which has been reported to reduce the polarity of the metal ion by partial sharing of its positive charge with the donor group of ligands, also supports this theory [8, (scirp.org)
  • Home Key Engineering Materials Electroceramics in Japan II Lithium Metal Secondary Cell Electrolyte with a. (scientific.net)
  • Mixed potential sensors were fabriated using yttria-stabilized zirconia (YSZ) as a solid electrolyte and a mixture of Au and various metal oxides as a sensing electrode. (sigmaaldrich.com)
  • Appropriate experimental conditions with respect to carrier electrolyte, pH range, salt concentration, humic acid concentration and the applied potential, have been optimised. (openrepository.com)
  • It has a wide range of end applications including in domestic acidic drain cleaners , as an electrolyte in lead-acid batteries and in various cleaning agents . (wikipedia.org)
  • Complexation of the stabilizing metals by fungal-released LMMOA gives fungal-root consortia direct access to organic substrates of good quality. (diva-portal.org)
  • First, adenine, one of four nucleic acids, was immobilized to the polymer chains grafted onto porous polyethylene hollow-fiber membrane or 6-nylon fiber to specifically bind palladium or ruthenium ionic species. (go.jp)
  • The perceptible appearance of biomolecules as prospective building blocks in the architecture of coordination polymers (CPs) and metal-organic frameworks (MOFs) are redolent of their inclusion in the synthon/tecton library of reticular chemistry. (mdpi.com)
  • A set of novel 1,2,4-triazole derivatized amino acids were introduced as superlative precursors in the design of 1D coordination polymers, 2D chiral helicates and 3D metal-organic frameworks. (mdpi.com)
  • Among those, metal-organic frameworks (MOFs) have been reported as a promising class of solids for such application. (ens.fr)
  • Discovery of practical metal-organic frameworks (MOFs) with high proton conduction remains a challenge due to the use of toxic chemicals, inconvenient ligand preparation and complication of production at scale for the state-of-the-art candidates. (ens.fr)
  • These results suggest that the cation exchange resin THBA holds great potential to remove cationic heavy metal species from industrial wastewater. (scielo.org.za)
  • The addition of biochar increased the level of metals in the solution due to the release of the biochar-borne metals under attack by LMWOAs via cation exchange. (salford.ac.uk)
  • Data representing late winter and late summer conditions were compared to identify seasonal differences in metals concentrations in the various wetland cells. (iu.edu)
  • Based on the chemical interactions between heavy metals (SEM) and acid-volatile sulfide (AVS), the concentrations of these two components can be used to assess the potential for toxicity to sediment-dwelling organisms. (wikipedia.org)
  • The concentrations and movement of Ag and other metals (Cd, Cu, Pb and Zn) before and after treatment are reported. (lancs.ac.uk)
  • That is, the solubility-product constants (Ksp) for the sulfides of these metals are very small, meaning they will precipitate as solids when a heavy metal ion and sulfide ion come into contact, as in Equation 2, where M2+ is a generic metal in the +2 oxidation state. (wikipedia.org)
  • Investigations were made on living strains offungi in a bioremediation process of three metal (lead)contaminated soils. (diva-portal.org)
  • vi ) Cd and Zn are rapidly adsorbed on soils under native vegetation or highly fertilized agricultural soils, and agricultural soils adsorb more these metals than soil under native vegetation. (usp.br)
  • The advent of expanded genetic code methods for the in vivo incorporation of non-canonical metal-binding amino acids into proteins allow to address an important aspect of this challenge: the creation of a stable, well-defined metal-binding site. (rsc.org)
  • Hydrochloric Acid Found In Your Stomach Digestive juices include hydrochloric acid, which kills microorganisms and activates an enzyme called pepsin that helps break down proteins, and intrinsic factor, which is a substance that helps the small intestine absorb vitamin B12. (nativeartscircle.org)
  • Probably acts redundantly with the other metal transport proteins cnnm-2, cnnm-3, cnnm-4 and cnnm-5 to regulate Mg 2+ homeostasis. (uniprot.org)
  • Update to parity with United States EPA Health Investigation Levels, Environmental Investigation levels, trigger and remediation levels for metals and chemicals. (sourcewatch.org)
  • This function has been disabled for Rishabh Metals and Chemicals . (rmc.in)
  • Return to 8 hour shifts for mine workers and mandatory routine blood and urinary testing for multiple metals and chemicals. (sourcewatch.org)
  • Spectrum specializes in providing the top chelated amino acids but if you do not see the product, grade or form of the ingredient you require, just contact our chemical specialist at 800-772-8786. (spectrumchemical.com)
  • Ethylenediaminetetraacetic acid were received from Merck and is used for chemical functionalization. (scirp.org)
  • Metals have different chemical reactivities. (chemicalformula.org)
  • The activity series of metals is the arrangement of metals in order of chemical reactivity from most to least active. (chemicalformula.org)
  • Chemical interaction mechanisms of metals, inorganics anions, organic acids and protein. (usp.br)