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首页> 外文期刊>Journal of Environmental Management >Analysis of worldwide regulatory guidance values for the most commonly regulated elemental surface soil contamination
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Analysis of worldwide regulatory guidance values for the most commonly regulated elemental surface soil contamination

机译：分析最常见的元素表面土壤污染的全球法规指导值

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摘要

Guidance values are used worldwide to regulate exposure to surface soil contamination. This analysis examines values applied to element contamination. In the United States, element guidance values have been promulgated by at least 6 federal agencies, 46 states and several regional, city, county, territorial, and autonomous Native American jurisdictions. Guidance values have also been promulgated in at least 71 other United Nations member states. A total of 5949 guidance values for 57 elements have been identified. These values are characterized, and detailed analyses are provided for the eight most frequently regulated elements (Pb, Cd, As, Ni, Cr, Hg, Cu, and Zn). More than 300 guidance values available for each of these are tabulated. These values span from 3.6 orders of magnitude for lead to 6.9 orders of magnitude for arsenic and are distributed in patterns that resemble those of lognormal random variables. However, nonrandom value clusters are also identified in each distribution. On average, the values used in the U.S. are higher than those used elsewhere around the world for noncarcinogenic contaminants, but are lower for carcinogenic contaminants. Approximately 31.4% of all values fall within uncertainty bounds computed from the U.S. Environmental Protection Agency cancer or noncancer risk model, but only 12.9% of carcinogenic arsenic and 7.5% of carcinogenic chromium (Cr-Ⅵ) guidance values fall within cancer risk model uncertainty bounds.
机译：指导值在全世界范围内用于调节暴露于表层土壤污染的程度。该分析检查了应用于元素污染的值。在美国，至少有6个联邦机构，46个州和几个地区，城市，县，地区和美国原住民辖区颁布了要素指导值。至少在其他71个联合国会员国中也发布了指导值。总共为57个元素确定了5949个指导值。对这些值进行表征，并对八个最经常调节的元素（Pb，Cd，As，Ni，Cr，Hg，Cu和Zn）进行详细分析。表中列出了每种方法的300多个指导值。这些值的范围从铅的3.6个数量级到砷的6.9个数量级，并以类似于对数正态随机变量的模式分布。但是，在每个分布中也都可以识别出非随机价值簇。平均而言，在美国，用于非致癌污染物的值高于世界其他地方，但是对于致癌污染物则更低。所有值的约31.4％落在根据美国环境保护局的癌症或非癌风险模型计算的不确定性范围内，但仅12.9％的致癌砷和7.5％的致癌铬（Cr-Ⅵ）指导值落在癌症风险模型的不确定性范围内。

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