Oxidation‐reduction chemistry of chromium: Relevance to the regulation and remediation of chromate‐contaminated soils

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 1997-11-01 DOI:10.1080/15320389709383590

B. James, J. C. Petura, R. Vitale, G. R. Mussoline

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引用次数: 93

Abstract

Developing health‐protective clean‐up standards and remediation strategies for chromium‐contaminated soils based on the hexavalent forms of this heavy metal is a complex and controversial issue, because certain forms of Cr(III) can oxidize to Cr(VI) and Cr(VI) can be reduced to Cr(III) under diverse soil conditions. The extent of oxidation of Cr(III) in soils amended with wastes is based on four interacting parameters: (1) solubility and form of Cr(III) related to oxidation (waste oxidation potential, or WOP), (2) reactive soil Mn(III,IV) (hydr)oxide levels (soil oxidation potential for Cr(III), or SOP), (3) soil potential for Cr(VI) reduction (soil reduction potential, or SRP), and (4) soil‐waste pH as a modifier of the first three parameters (pH modification value, or PMV). Each of these four parameters can be quantified with laboratory tests and ranked numerically; the sum of which is the Potential Chromium Oxidation Score (PCOS) for assessing the relative hazard of a waste‐soil combination. The PCOS v...

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铬的氧化还原化学:与铬酸盐污染土壤的调节和修复相关

基于六价形式的铬污染土壤的健康保护清理标准和修复策略是一个复杂而有争议的问题，因为某些形式的Cr(III)可以氧化为Cr(VI)，而Cr(VI)可以在不同的土壤条件下还原为Cr(III)。用废物修饰的土壤中Cr(III)的氧化程度基于四个相互作用的参数:(1)与氧化相关的Cr(III)的溶解度和形态(废物氧化电位，或WOP)，(2)活性土壤Mn(III,IV)(水合)氧化物水平(土壤Cr(III)的氧化电位，或SOP)，(3)土壤Cr(VI)还原电位(土壤还原电位，或SRP)，以及(4)土壤-废物pH值作为前三个参数的修饰剂(pH修饰值，或PMV)。这四个参数都可以通过实验室试验进行量化，并进行数值排序;其总和是用于评估废物-土壤组合的相对危害的潜在铬氧化评分(PCOS)。多囊卵巢综合征…

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.