Occurrence of polychlorinated biphenyls (PCBs) together with sediment properties in the surface sediments of the Bering Sea, Chukchi Sea and Canada Basin
Occurrence of polychlorinated biphenyls (PCBs) together with sediment properties in the surface sediments of the Bering Sea, Chukchi Sea and Canada Basin
复制标题
白令海、楚科奇海和加拿大盆地表层沉积物中多氯联苯 (PCB) 的存在及其沉积物特性
DOI：
10.1016/j.chemosphere.2012.05.033
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发表时间：
2012-09-01
期刊：
影响因子：
8.8
通讯作者：
Mai, Bixian
中科院分区：
文献类型：
--
作者：
Hong, Qingquan;Wang, Yun;Mai, Bixian
探讨了白令海、楚科奇海和加拿大盆地表层沉积物中多氯联苯（PCBs）的空间分布和潜在来源，以及PCBs与沉积物性质（包括粒度、含水量、烧失量、总有机碳和黑碳）的关系。白令海、楚科奇海和加拿大盆地的西格玛 PCB（检测到的 PCB 同系物的总和）浓度在研究区域波动，范围为 22-150,60-640 和 24-600 pg g(-1) 干重。在不同地点观察到类似的同系物模式，其中三氯化PCBs是主要的同系物，这表明PCBs主要来自大气输送和沉积以及洋流输送。 PCB浓度与沉积物性质之间没有明显的相关性，表明PCBs的分布不仅受其来源控制，还受到大气迁移以及在水体和沉积物中沉积、混合、分配和吸附等多种因素的影响。 Crown 版权所有 (C) 2012 由 Elsevier Ltd 出版。保留所有权利。
The spatial distribution and potential source of polychlorinated biphenyls (PCBs) in surface sediments from Bering Sea, Chukchi Sea, and Canada Basin and the relationship between PCBs and sedimentary properties including grain size, water content, loss on ignition, total organic carbon, and black carbon were explored. Sigma PCBs (the sum of the detected PCB congeners) concentrations fluctuated in the study area, ranging from 22-150,60-640 and 24-600 pg g(-1) dry weight for the Bering Sea, Chukchi Sea, and Canada Basin. A similar homologue pattern was observed at different locations, with tri-chlorinated PCBs being the dominant homologue, implying that the PCBs came mainly from the atmospheric transportation and deposition and ocean current transportation. No apparent co-relationships between PCB concentrations and sediment properties were obtained, indicating that the distribution of PCBs was not only controlled by their source, but also by the multi-factors such as atmospheric transport and depositing, mixing, partitioning and sorption in the water column and sediments. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.