Bioavailability and distribution of PAHs and PCBs in the sediment pore water of the German Bight and Wadden Sea.
Bioavailability and distribution of PAHs and PCBs in the sediment pore water of the German Bight and Wadden Sea.
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DOI：
10.1016/j.marpolbul.2018.11.052
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发表时间：
2019-01
影响因子：
5.8
通讯作者：
N. C. Niehus;B. Brockmeyer;G. Witt
中科院分区：
文献类型：
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作者：
N. C. Niehus;B. Brockmeyer;G. Witt
自由溶解的浓度（Cfree）测定多环芳烃和多氯联苯在德国湾和瓦登海沉积物。采用聚二甲基硅氧烷（PDMS）涂层玻璃纤维进行非原位固相微萃取（SPME），然后进行自动热解吸和GC-MS分析。这项研究提供了第一个数据集的空间分布ofCfreefor多环芳烃和多氯联苯在德国湾和瓦登海。我们发现在瓦登海，特别是在威悉河河口的PCB浓度升高。除了一些以前的倾倒地点之外，北海桑迪沉积物的污染程度要低得多。多环芳烃的吸附强度一般较强，而多氯联苯在瓦登海沉积物中只有弱结合。SPME方法是一种快速、灵敏的研究不含疏水性有机化合物的沉积物风险评价的工具。
The freely dissolved concentration (Cfree) was measured for PAHs and PCBs in sediments of the German Bight and Wadden Sea. Ex-situ Solid Phase Microextraction (SPME) was applied using Polydimethlysiloxane (PDMS) coated glass fibers followed by automated thermal desorption and GC–MS analysis. This study provides the first dataset on the spatial distribution ofCfreefor PAHs and PCBs in the German Bight and the Wadden Sea. We found elevated PCB concentrations in the Wadden Sea and especially in the Weser estuary. Sandy North Sea sediments were rather less contaminated, except for some former dumping sites. The sorption strength of PAHs was generally stronger, while PCBs in the Wadden Sea sediments were only weakly bound. This SPME method is a rapid and sensitive tool to studyCfreeof hydrophobic organic chemicals to improve todays sediment risk assessment.