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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Concentrations Distributions and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China
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Concentrations Distributions and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China

机译：西北渭河流域沉积物中六溴环十二烷的浓度分布和风险评估

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摘要

As one of the most widely used brominated flame retardants, hexabromocyclododecane (HBCD) is found widely in the environmental media. In this study, the content and spatial distribution of HBCD and risk posed by HBCD in surface sediment in the Weihe River Basin in Northwest China were investigated. The HBCD concentration ranged nd–4.04 ng/g dw with the mean was 0.45 ng/g dw. The major source of HBCD in surface sediment was local point discharge. The distribution profiles of α-, β-, γ-HBCD were 24.7–87.9%, 0–42.0%, and 0–67.1%, respectively. Specially, α-HBCD was the dominating isomer in most sample sites. This differed significantly from that in HBCD technical product, which might be attributed to the different degradation rates and inter-transformation of the three HBCD isomers. Risk quotient method was used to assess the potential risk posed by HBCD in sediment. HBCD do not pose strong risks to aquatic algae organisms in the Weihe River Basin.
机译：作为最广泛使用的溴化阻燃剂之一，六溴环十二烷（HBCD）在环境介质中被广泛发现。本研究调查了西北渭河流域表层沉积物中六溴环十二烷的含量和空间分布以及六溴环十二烷的风险。六溴环十二烷的浓度范围为nd–4.04 ng / g dw，平均值为0.45 ng / g dw。表面沉积物中六溴环十二烷的主要来源是局部排放。 α-，β-，γ-HBCD的分布曲线分别为24.7-87.9％，0-42.0％和0-67.1％。特别地，在大多数样品位点中，α-六溴环十二烷是主要的异构体。这与六溴环十二烷技术产品的差异很大，这可能归因于三种六溴环十二烷异构体的降解率不同和相互转化。风险商方法用于评估六溴环十二烷在沉积物中构成的潜在风险。六溴环十二烷不会对渭河流域的水生藻类生物造成严重威胁。

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