期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 53, 期 5, 页码 2820-2829出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.8b05503
关键词
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资金
- Natural Science Foundation of Guangdong Province [2017A030313082]
- Technology Program of Guangzhou City [201707010374]
- Basic Research Foundation of the National Commonwealth Research Institute [PM-zx703-201701-040]
yLegacy organic contaminants, such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), and several currently used organic contaminants, such as novel brominated retardants (NBFRs), organophosphate flame retardants (OPFRs), and Dechlorane Plus (DPs), were measured in the segmented hair and hand wipes of e-waste dismantling workers and in the dust from their workplace in an e-waste recycling site in South China to assess the accumulation and sources of organic contaminants in the hair shaft. The median concentrations of DPs, PBDEs, NBFRs, PCBs and OPFRs in hair samples were 23.5, 154, 156, 349, and 371 ng/g, respectively. A linear increase in organic contaminant concentrations was found along the hair shaft, with significant differences among each segment, while the age-related patterns were similar among the 7 hair segments. A linear relationship was found between the accumulation rates and the log K-OW, indicating that the accumulation rates of organic contaminants along the hair shaft decreased with increasing log K-OW values. Enantiomer fraction (EF) values of PCB-132 in distal segments were close to those in dust and air, while EFs in proximal segments were close to those in serum. The contributions of PCBs from external sources to hair increased with the distance from the scalp of hair segments, from 67.8% in 0-3 cm segments to 95.9% in 18-21 cm segments.
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