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New Mobilization Pathway of Antimonite: Thiolation and Oxidation by Dissimilatory Metal-Reducing Bacteria via Elemental Sulfur Respiration
Ye, Li; Zhong, Wen; Zhang, Min; Jing, Chuanyong
2021-11-03
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0048-9697
Volume799Pages:-
AbstractTo date, dermal/hand-to-mouth exposure to chemicals in the e-waste recycling environment has not been sufficiently understood, and the importance of dermal absorption of chemicals in c-waste dismantling workers remains controversial. In this study, we utilized hand wipes and matched sera to characterize dennal/hand-to-mouth exposure to PCBs for e-waste dismantling workers, and potential effects on thyroid hormones were also assessed. PCB loadings in hand wipes varied from 0.829-265 ng wipe(-1) (11.3-2850 ng m(-2) wipe(-1)), with 37.2 ng wipe(-1) (432 ng m(-2) wipe(-1)) as the median value. Serum concentrations of PCBs ranged from 32.3-3410 ng g(-1) lipid weight (lw) with 364 ng g(-1) lw as the median value. Between wipes and sera, lower-chlorinated congeners (e.g. CB-28, -66, -74, -99,-105 and -118) showed significant associations (p <0.01), but higher-chlorinated congeners (e.g. CB-138, -153, -156, -170, and -180) did not. These lower-chlorinated CBs were the major contributors to estimated dermal/hand-to-mouth average daily doses (ADDS) and the hazard index (HI). Correspondingly, their estimated contributions to serum levels by dermal absorption were also significant, with the contribution of CB-28 being as high as 21.4%. As a consequence, dermal absorption of some low-chlorinated congeners was a non-negligible route for e-waste dismantling workers. Although insignificant association was shown between serum PCBs and thyroid hormones, the potential health risk should be of concern due to the high levels of PCBs observed in workers sera. (C) 2021 Published by Elsevier B.V.
Department环境化学与生态毒理学国家重点实验室
KeywordPCBs E-waste recycling workers Hand wipes Dermal absorption Hand-to-mouth uptake, thyroid hormones
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46815
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Ye, Li,Zhong, Wen,Zhang, Min,et al. New Mobilization Pathway of Antimonite: Thiolation and Oxidation by Dissimilatory Metal-Reducing Bacteria via Elemental Sulfur Respiration[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,799:-.
APA Ye, Li,Zhong, Wen,Zhang, Min,&Jing, Chuanyong.(2021).New Mobilization Pathway of Antimonite: Thiolation and Oxidation by Dissimilatory Metal-Reducing Bacteria via Elemental Sulfur Respiration.ENVIRONMENTAL SCIENCE & TECHNOLOGY,799,-.
MLA Ye, Li,et al."New Mobilization Pathway of Antimonite: Thiolation and Oxidation by Dissimilatory Metal-Reducing Bacteria via Elemental Sulfur Respiration".ENVIRONMENTAL SCIENCE & TECHNOLOGY 799(2021):-.
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