Ma Zhao-Hui, Jin Jun, Qi Xue-Kui, Wang Ying, Jiang Xia, He Song-Jie, Li Ming-Yuan
College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
Huan Jing Ke Xue. 2013 Mar;34(3):1136-41.
Sediment core samples collected from the Zhushan Bay, Meiliang Bay, South Taihu of Taihu Lake were analyzed for 8 polybrominated diphenylethers (PBDEs) and 12 dioxin-like PCBs (DL-PCBs). The results revealed that the PBDEs levels were highest in the Zhushan Bay, followed by Meiliang Bay and South Taihu; and the DL-PCB levels were highest in the Meiliang Bay, followed Zhushan Bay and South Taihu. The vertical distribution of PBDEs level showed an exponential growth trend in Taihu Lake sediments, BDE-209 was the most abundant PBDEs congeners; and the vertical distribution of the DL-PCBs level in the sediments revealed that the contamination caused by DL-PCBs continued to increase in recent years, indicating that there were PCBs sources in the Taihu Lake region. There was significant difference in the composition of PBDEs congeners at different depths in the sediments of Meiliang Bay, however, the detailed causes remain to be investigated in further studies. The vertical distribution pattern of PCBs congeners revealed that PCB-77, -118, -105 levels significantly decreased with increasing depth in 0-15 cm upper sediments and there chang in the lower sediments.
对从太湖竺山湾、梅梁湾、南部湖区采集的沉积物岩芯样本进行了8种多溴二苯醚（PBDEs）和12种二噁英类多氯联苯（DL-PCBs）的分析。结果显示，竺山湾的PBDEs含量最高，其次是梅梁湾和南部湖区；梅梁湾的DL-PCBs含量最高，其次是竺山湾和南部湖区。太湖沉积物中PBDEs含量的垂直分布呈指数增长趋势，BDE-209是最主要的PBDEs同系物；沉积物中DL-PCBs含量的垂直分布显示近年来DL-PCBs造成的污染持续增加，表明太湖地区存在多氯联苯的来源。梅梁湾沉积物不同深度的PBDEs同系物组成存在显著差异，但其详细原因仍有待进一步研究。多氯联苯同系物的垂直分布模式显示，在0-15厘米上部沉积物中，PCB-77、-118、-IO5的含量随深度增加而显著降低，下部沉积物中有变化。
