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首页> 外文期刊>Journal - American Water Works Association >Hexavalent chromium review, part 1: Health effects, regulations, and analysis
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Hexavalent chromium review, part 1: Health effects, regulations, and analysis

机译:六价铬审查,第1部分:健康影响,法规和分析

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First of a two-part review summarizing the current state of the science regarding hexavalent chromium, this article addresses health effects, regulations, and analysis; part 2 will cover occurrence, chemistry, and treatment. Although hexavalent chromium-Cr(VI)-is a known human carcinogen when inhaled, its effects when taken orally (e.g., consumed in drinking water) are still being evaluated. The outcome of the ongoing US Environmental Protection Agency (USEPA) toxicological review will determine whether a new federal maximum contaminant level will be set specifically for Cr(VI). In California, a public health goal of 0.02 ug/L has been established, and the state is proceeding to set a maximum contaminant level (MCL). Analytical methods can reliably quantify Cr(VI) at subparts-per-billion levels, whereas methods for measuring total chromium are much less sensitive. A new USEPA method is available for Cr(VI) analysis with updated requirements for chromium speciation preservation, holding time, and filtration.
机译:本文分为两部分,首先概述了有关六价铬的科学现状,本文讨论了对健康的影响,法规和分析。第2部分将介绍发生,化学和治疗。尽管六价铬-Cr(VI)-吸入时是已知的人类致癌物,但口服时(例如在饮用水中消耗)其效果仍在评估中。正在进行的美国环境保护局(USEPA)毒理学审查的结果将确定是否将专门针对Cr(VI)设定新的联邦最大污染物水平。在加利福尼亚州,已经建立了0.02 ug / L的公共卫生目标,并且该州正着手设定最大污染物水平(MCL)。分析方法可以可靠地定量十亿分之几水平的Cr(VI),而测量总铬的方法则灵敏度较低。一种新的USEPA方法可用于Cr(VI)分析,其中对铬的形态保存,保持时间和过滤提出了更新的要求。

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