Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China.
Ecotoxicol Environ Saf. 2012 Aug;82:63-70. doi: 10.1016/j.ecoenv.2012.05.010. Epub 2012 Jun 5.
The investigation of biomagnification of polycyclic aromatic hydrocarbons (PAHs) and endosulfan, an organochlorine pesticide (OCP) and a new persistent organic pollutant, has been limited in freshwater food chains. The objective of the present study was to investigate the levels with focus on the sources and biomagnification of PAHs and OCPs in fish from Taihu Lake, China. In 193 samples of 24 species investigated, the concentrations ranged from 289 to 9 500 ng/g lipid weight (lw) for PAHs, and from 121 to 904 ng/g lw for OCPs, indicating that the fish in the lake was moderately contaminated. The PAHs mainly originated from both unburned petroleum and combustion of fossil fuels, and the OCPs from aged residues. It was unlikely that most of the PAHs and OCPs were biodiluted through the food chain because their trophic magnification factors were higher than one nevertheless the P-values >0.05. Aldrin, dieldrin, p,p'-DDE, p,p'-DDD, and endosulfan sulfate were significantly biomagnified through the food chain.
多环芳烃（PAHs）和有机氯农药（OCP）及新的持久性有机污染物硫丹的生物放大作用在淡水食物链中的研究受到限制。本研究的目的是调查中国太湖鱼类中 PAHs 和 OCPs 的水平、来源和生物放大作用。在所调查的 24 种 193 个样本中，PAHs 的浓度范围为 289 至 9500ng/g 脂重（lw），OCPs 的浓度范围为 121 至 904ng/g lw，表明该湖中的鱼类受到中度污染。PAHs 主要来自未燃烧的石油和化石燃料的燃烧，而 OCPs 则来自老化的残留物。由于食物链中的生物浓缩系数高于 1，大多数 PAHs 和 OCPs 不太可能通过食物链进行生物稀释，但 P 值>0.05。艾氏剂、狄氏剂、p,p'-DDE、p,p'-DDD 和硫丹硫酸盐通过食物链显著得到生物放大。
