Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8855184 | Environment International | 2018 | 8 Pages |
Abstract
The levels of polychlorinated biphenyls (PCBs) and short/median-chain chlorinated paraffins (S/MCCPs) in 68 home-produced eggs collected in 2013 and 2016 from an electronic-waste (e-waste) site in South China were measured and the human dietary exposure to these two classes of contaminants via egg consumption was calculated. The levels of PCBs, SCCPs, and MCCPs varied from 236 to 8870â¯ng/g lipid weight (lw), 477 to 111,000â¯ng/g lw, and 125 to 91,100â¯ng/g lw, respectively. There are no significant differences in the levels of PCBs, SCCPs, and MCCPs between 2013 and 2016 (pâ¯>â¯0.05). The congener profiles of PCBs and MCCPs were similar to each other between 2013 and 2016; however, the homologue profiles of SCCPs were different. The Toxic Equivalent Quantities (TEQs) of âDL-PCBs and the levels of âICES-6 PCBs strongly exceeded the limits set by EU Regulation 1259/2011 (2.5â¯pg World Health Organization-TEQ2005 gâ1 lw for DL-âPCBs and 40â¯ng/â¯g lw for âICES-6 PCBs). The estimated daily intakes (EDI) of PCBs, SCCPs, and MCCPs by adults and children ranged between 5.57 and 1100, 11.8 and 11,900, and 3.62 and 11,400â¯ng/kg bw/d, respectively. PCBs pose serious health risks for local residents, especially for children, due to the high ratios of EDI (68% in 2013 and 70% in 2016 for adults and 100% for children) in excess of the exposure limits.
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Authors
Yanhong Zeng, Chenchen Huang, Xiaojun Luo, Yine Liu, Zihe Ren, Bixian Mai,