Key Laboratory for Integrated Regulation and Resources Exploitation on Shallow Lakes, Ministry of Education, Nanjing, 210098, People's Republic of China,
Environ Sci Pollut Res Int. 2014 Feb;21(4):3091-103. doi: 10.1007/s11356-013-2265-x. Epub 2013 Nov 7.
The distribution and interactions of phytoplankton and 14 polychlorinated biphenyls (PCBs) were investigated using canonical correspondence analysis in autumn in the Qinhuai River, Nanjing, China. Concentrations of PCBs in water and algal samples ranged from 33.78 to 144.84 ng/L and from 0.21 to 19.66 ng/L (0.06 to 3.04 ng/mg biomass), respectively. The predominant residual species of PCBs in water samples were tri- through hexachlorobiphenyls, and the predominant residuals in algae were tri-, tetra-, and heptachlorobiphenyls. The degree of eutrophication affected phytoplankton composition and PCB bioaccumulation, and led to sample site- and algal species specificity of PCB residues in the study area. Chlorophyta, Bacillariophyta, and Euglenophyta had strong capacities to take up PCBs, whereas Cyanophyta was less involved in the transfer of these compounds. Bioaccumulation of PCBs by algae may be affected by water quality, chlorination, phytoplankton composition, and the structure of the PCBs and the algal cell walls.
在中国南京秦淮河秋季，采用典范对应分析研究了浮游植物和 14 种多氯联苯（PCBs）的分布和相互作用。水中和藻类样本中 PCBs 的浓度范围分别为 33.78-144.84ng/L 和 0.21-19.66ng/L（0.06-3.04ng/mg 生物量）。水中 PCBs 的主要残留物种为三氯至六氯联苯，藻类中的主要残留物种为三氯、四氯和七氯联苯。富营养化程度影响浮游植物组成和 PCB 的生物累积，导致研究区域中 PCB 残留的采样点和藻类物种特异性。绿藻、硅藻和裸藻具有很强的吸收 PCB 的能力，而蓝藻则较少参与这些化合物的转移。藻类对 PCBs 的生物累积可能受到水质、氯化、浮游植物组成以及 PCBs 和藻类细胞壁结构的影响。
