Abstract：The bioaccumulation potentials of polychlorinated biphenyls (PCBs) in bottom fishes from an e-waste recycling site in South China were investigated, and the biota-sediment accumulation factors (BSAFs) and biomagnification factors (BMFs) were determined based on the concentrations of PCBs in surfacial sediment samples and in three bottom fishes (i.e., mud carp, crucian carp, and northern snakehead). Concentrations of total PCBs in the sediments ranged from 24.5 to 38.6μg/g dry wet (or 279.2-338.5μg/g OC), showing severe contamination of PCBs in the aquatic environment. The calculated BSAFs ranged from 0.05 to 2.52, 0.01 to 1.20, and 0.01 to 5.03 for mud carp, crucian carp, and northern snakehead, respectively. The BMFs ranged from 0.14 to 2.23 and 0.14 to 4.93 for the northern snakehead/mud carp and northern snakehead/crucian carp coupling. For most PCB congeners, the observed BMFs were less than unit, indicating the biomagnification of these congeners in the food-chain. Both BSAFs and log BMF correlated significantly with log KOW and the chlorine numbers of PCBs, which suggested that the physiochemical properties of PCBs played an important role in their bioaccumulation.
吴江平, 管运涛, 张荧, 罗孝俊, 张锡辉, 麦碧娴. 广东电子垃圾污染区水体底层鱼类对PCBs的富集效应[J]. 中国环境科学, 2011, 31(4): 637-641.
WU Jiang-Ping, GUAN Yun-Tao, ZHANG Ying, LUO Xiao-Jun, ZHANG Xi-Hui, MAI Bi-Xian. Bioaccumulation potentials of polychlorinated biphenyls in bottom fishes from an e-waste recycling site in South China. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(4): 637-641.
