| 词汇 | sulfide |
| 释义 | sulfide noun[ C or U ] uk /ˈsʌl.faɪd/ us /ˈsʌl.faɪd/ US spelling ofsulphide（sulphide的美式拼写） Chemicals, chemical compounds & gases acetic acid acetone acrolein acrylamide activated charcoal adenine agglomerate benzene fluorocarbon H2O HCFC HFC hyaluronic acid hydrochloric acid hydrochlorofluorocarbon limescale metho meths tartaric acid tear gas sulfide | American Dictionarysulfide noun[ C ] us/ˈsʌl·fɑɪd/ chemistry a chemical formed from sulfur and another element Examples of sulfidesulfide The easily worked oxidised ore was largely depleted and the underlying sulfide deposits were proving difficult and costly to treat. In this process, the silver is reduced and lead sulfide is formed. The black color which then results from the addition of sulfur is likely to be due to the formation of lead sulfide. Further, paleomagnetic measurements are going to reveal the relationship between the deposition of the black shale and formation of the iron sulfide. We are studying microbes in hydrothermal environments that obtain metabolic energy from mineral substrates, particularly metal sulfides. When acetic acid was poured over the produce ("liver of sulfur," which contains mostly potassium sulfide), sulfur precipitated due to an oxidation of the sulfide. The main argument for this is that in a chemical reaction, the sulfide ion should be a good nucleophile for the reaction. Second, elemental arsenic does not combust with copper in alloying as in the case of arsenic sulfide. None of the sulfide ions make any favorable hydrogen bond to the protein. The extreme chemistry of the environment is produced by a microbial ecosystem that metabolizes sulfide minerals and produces sulfuric acid as a byproduct. We studied catalytic abilities of natural sulfide and oxide minerals in reducing aqueous nitrate and nitrite solutions. If the sulfide production exceeds its potential sinks, sulfide will enter the flowing waste water. A lot is known on the molecular mechanisms of amino acids on oxides and silicate minerals (and very little on sulfide minerals). This was probably due to increased precipitation of the sulfide with iron. The two irons are tetrahedrally coordinated by inorganic sulfide ions and cysteine residues. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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