Concentrations and bioaccessibility of polychlorinated biphenyls in animal-based food collected from markets in Shanghai and assessment of associated human daily intake
Abstract:The concentrations and bioaccessibility of PCBs in animal-based food collected from markets in Shanghai were determined. The associated human daily intake of PCBs was estimated. The concentrations of PCBs ranged from lower than limit of detection to 3734.3 pg/g (wet weight). Tri- to hexa-CBs were the predominant congeners. The PCB concentrations in fish were higher than those in livestock, poultry or shellfish. The following sequences of PCB concentrations in fish were observed: seawater fish > freshwater fish; carnivorous fish > omnivorous fish > herbivorous fish. The bioaccessibility of PCBs were determined via simulating the digestion process in human gastrointestinal tract. The fat contents in animal-based food had a significantly linear correlation with the bioaccessibility of PCBs. Thus the bioaccessibility of PCBs was able to be calculated from the fat contents. The human daily intake via ingestion of animal-based food was 24439.3 pg/d, however, it was reduced to 5034.5 pg/d when the bioaccessibility of PCBs was added to the calculation. Fish was the major contributor to human exposure to PCBs, accounting for 60% of the total PCBs intake coming from food, dust and particulates in the air.
李俊岭, 张东平, 余应新, 韩姝媛, 吴明红, 盛国英, 傅家谟. 动物性食品中PCBs的生物有效性及人体日暴露评估[J]. 中国环境科学, 2011, 31(6): 1019-1028.
LI Jun-Ling, ZHANG Dong-Ping, YU Ying-Xin, HAN Shu-Yuan, WU Ming-Hong, SHENG Guo-Ying, FU Jia-Mo. Concentrations and bioaccessibility of polychlorinated biphenyls in animal-based food collected from markets in Shanghai and assessment of associated human daily intake. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(6): 1019-1028.