Matrix-specific distribution and diastereomeric profiles of hexabromocyclododecane (HBCD) in a multimedia environment: Air, soil, sludge, sediment, and fish.
Matrix-specific distribution and diastereomeric profiles of hexabromocyclododecane (HBCD) in a multimedia environment: Air, soil, sludge, sediment, and fish.
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DOI：
10.1016/j.envpol.2017.04.093
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发表时间：
2017-07
影响因子：
8.9
通讯作者：
Hyeyeong Jo;Min-Hui Son;Sung-Hee Seo;Yoon-Seok Chang
中科院分区：
文献类型：
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作者：
Hyeyeong Jo;Min-Hui Son;Sung-Hee Seo;Yoon-Seok Chang
在多介质环境中，对沿着的空气、土壤、污泥、沉积物和鱼类样本中的六溴环十二烷（HBCD）污染及其非对映体分布进行了局部调查。六溴环十二烷在每种基质中的空间分布显示出不同的结果。空气和土壤中的六溴环十二烷浓度最高的地方是在一般工业综合体附近;在沉积物和污泥样本中，这些浓度是在下游区域（即，市区）。每种基质都显示出六溴环十二烷非对映异构体的特定分布模式，表明污染物的持续输入、不同的物理化学特性或异构化。由于六溴环十二烷在环境中的各种异构化过程和不同的降解速率以及鱼类的代谢能力，空气、污泥和鱼类基质中的颗粒相主要是α-六溴环十二烷;相比之下，沉积物和土壤基质主要是γ-六溴环十二烷，这是因为技术混合物的主要成分和对固体颗粒的强烈吸附。根据这些结果，六溴环十二烷非对映异构体的普遍分布和基质特异性分布表明，应更仔细地考虑基质的特性及其对六溴环十二烷在非对映异构体水平上的潜在影响的影响。
Hexabromocyclododecane (HBCD) contamination and its diastereomeric profile were investigated in a multi-media environment along a river at the local scale in air, soil, sludge, sediment, and fish samples. The spatial distribution of HBCD in each matrix showed a different result. The highest concentrations of HBCD in air and soil were detected near a general industrial complex; in the sediment and sludge samples, they were detected in the down-stream region (i.e., urban area). Each matrix showed the specific distribution patterns of HBCD diastereomers, suggesting continuous inputs of contaminants, different physicochemical properties, or isomerizations. The particle phases in air, sludge, and fish matrices were dominated by α-HBCD, owing to HBCD's various isomerization processes and different degradation rate in the environment, and metabolic capabilities of the fish; in contrast, the sediment and soil matrices were dominated by γ-HBCD because of the major composition of the technical mixtures and the strong adsorption onto solid particles. Based on these results, the prevalent and matrix-specific distribution of HBCD diastereomers suggested that more careful consideration should be given to the characteristics of the matrices and their effects on the potential influence of HBCD at the diastereomeric level.