Residual Distribution and Risk Assessment of Polychlorinated Biphenyls in Surface Sediments of the Pearl River Delta, South China
文献类型: 外文期刊
第一作者: Lai, Zini
作者: Lai, Zini;Li, Xiuli;Li, Haiyan;Zhao, Lina;Zeng, Yanyi;Wang, Chao;Gao, Yuan;Liu, Qianfu;Lai, Zini;Li, Xiuli;Li, Haiyan;Zhao, Lina;Zeng, Yanyi;Wang, Chao;Gao, Yuan;Liu, Qianfu;Li, Xiuli;Zhao, Lina
作者机构:
关键词: Pearl River Delta;PCBs;Surface sediments;Risk assessment
期刊名称:BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY ( 影响因子:2.151; 五年影响因子:2.129 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: We analyzed residual PCBs in surface sediments at 19 sites in the Pearl River Delta in the wet and dry seasons. Seven indicative PCB congeners (PCB28, PCB52, PCB101, PCB118, PCB153, PCB138 and PCB180) were detected in the surface sediments, among which the detection rate and mass concentrations of PCB52 were the highest. Total concentrations of the seven PCBs ranged from 19.8 to 111 mu g/kg, with an average of 48.2 mu g/kg. For the spatial distribution, the sum of the seven PCB (aPCB) concentrations for the stations that were located in the city region of the Pearl River Delta were significantly higher than the aPCB concentrations for the eight outlets of the Pearl River Delta (p < 0.05). According to the US National Oceanic and Atmospheric Administration ERL and ERM guideline concentrations, the PCB concentrations may occasionally lead to adverse effects, especially in the dry season.
分类号: R99
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