Polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs) in environmental samples from Ny-Alesund and London Island, Svalbard, the Arctic
Polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs) in environmental samples from Ny-Alesund and London Island, Svalbard, the Arctic
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北极地区新奥勒松和伦敦岛、斯瓦尔巴群岛环境样本中的多氯联苯 (PCB) 和多溴联苯醚 (PBDE)
DOI：
10.1016/j.chemosphere.2015.01.043
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发表时间：
2015
期刊：
影响因子：
8.8
通讯作者：
Jiang Guibin
中科院分区：
文献类型：
--
作者：
Zhu Chaofei;Li Yingming;Wang Pu;Chen Zhaojing;Ren Daiwei;Ssebugere Patrick;Zhang Qinghua;Jiang Guibin
多氯联苯(PCbs)和多溴联苯醚(PBDEs)在从北冰洋的纽奥勒苏德和伦敦岛采集的环境样品中进行了检测。土壤中的多氯联苯总浓度(∑25−)为0.57至2.52 ng g−1干重(Dw)，植物中为0.3至1.16 ng g−1dw，驯鹿粪便中为0.56至0.98g g pdw。在大多数样品中，CB-11的非芳纶同系物比其他同系物占优势，占∑25PCB的16.0±59.8%。土壤、植物和驯鹿粪便中∑13PBDEs的浓度分别为1.7416、36.7495和28.1-104pg/g−1DW。在手性CB-95的所有样品中都观察到了对映体选择性生物转化的特征，而在其他手性多氯联苯的部分样品中观察到了这一特征。6种植物的生物积累系数因污染物同系物和植物种类的不同而不同，∑多氯联苯的生物积累系数小于1，∑多溴二苯醚的生物积累系数大于1。BAF值随着土壤浓度的增加而降低，表明土壤中较高的本底水平限制了植物对这些污染物的积累。
Polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs) were determined in environmental samples collected from Ny-Ålesund and London Island, Svalbard, the Arctic. Total PCB concentrations (∑25PCBs) varied from 0.57 to 2.52 ng g−1dry weight (dw) in soil, 0.30 to 1.16 ng g−1dw in plants and 0.56 to 0.98 ng g−1dw in reindeer dung. The non-Aroclor congener of CB-11 was predominant in most samples compared to other congeners, accounting for 16.0 ± 9.8% to the ∑25PCBs. The ∑13PBDEs concentrations were 1.7–416, 36.7–495 and 28.1–104 pg g−1dw in soil, plants and reindeer dung, respectively. The signature of enantioselective biotransformation was observed in all samples for chiral CB-95, whereas in parts of samples for other chiral PCBs. Bioaccumulation factors (BAFs) in six plant species varied within individual contaminant congeners and plant species, with BAFs less than 1 for ∑PCBs and higher than 1 for ∑PBDEs. BAF values decreased with increasing soil concentrations, suggesting that high background levels in soil restricted the accumulation of these contaminants by plants.