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首页> 外文期刊>Environmental Science & Technology >Typical dioxin concentrations in agriculture soils of Washington state and potential sources
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Typical dioxin concentrations in agriculture soils of Washington state and potential sources

机译：华盛顿州农业土壤中典型的二恶英浓度和潜在来源

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摘要

Background or typical levels of polychlorinated dibenzo-p-dioxins and of polychlorinated dibenzo-p-furans in soils have become increasingly important in the regulatory community, as dioxins have come under increased scrutiny due to their toxicity and persistence. Knowing the typical levels of dioxin in soils is important to set regulatory levels, to prevent further contamination, and for setting cleanup levels. A random sample (n = 54) of agricultural lands within Washington state revealed atypical concentration of "dioxin" of 0.14 ng/kg (toxicity equivalents, TEQ). For a comparison, residential urban areas, forested, and open areas were also investigated on a smaller scale (n = 14, 8, and 8, respectively) with typical dioxin values of 4.1, 2.3, and 1.0 ng/kg (TEQs), respectively. A discriminant function analysis was used to examine soil dioxin profiles and associations with potential known dioxin sources in Washington state. Soil sample dioxin profiles could not be discriminated from those of biosolids and pentachlorophenol products.
机译：在土壤中，多氯二苯并对二恶英和多氯二苯并呋喃的背景或典型水平在监管界变得越来越重要，因为二恶英由于其毒性和持久性而受到越来越严格的审查。了解土壤中二恶英的典型水平对于设定法规水平，防止进一步污染以及设定清除水平非常重要。华盛顿州内的一个农业土地的随机样本（n = 54）显示“二恶英”的非典型浓度为0.14 ng / kg（毒性当量，TEQ）。为了进行比较，还以较小的规模（分别为n = 14、8和8）对城市居民区，森林和空地进行了调查，典型的二恶英值分别为4.1、2.3和1.0 ng / kg（TEQ），分别。判别函数分析用于检查土壤二恶英概况以及与华盛顿州潜在的已知二恶英来源的关联。不能将土壤样品中的二恶英特性与生物固体和五氯苯酚产品的特性区分开。

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