Combined effects of dust and dietary exposure of occupational workers and local residents to short- and medium-chain chlorinated paraffins in a mega e-waste recycling industrial park in South China

Hui CHEN, Chung Wah James LAM, Mingshan ZHU, Fei WANG, Wei ZHOU, Bibai DU, Lixi ZENG, Eddy Y. ZENG

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Abstract

Four types of dust samples and nine categories of locally produced staple foods were collected from a mega e-waste recycling industrial park and its surrounding regions, and simultaneously analyzed for short-chain and medium-chain chlorinated paraffins (CPs) to estimate dust and dietary exposure and their combined effects on occupational workers and local residents. All samples related to e-waste activities contained considerably high concentrations of CPs. The highest dust concentration was found in e-waste workshops. CPs were highly accumulated in local plant and animal origin foods, most markedly in fish, vegetables, and rice. The main contribution to CP intake under a median exposure scenario was from the diet, and vegetables, fish, and rice were the three largest dietary intake sources. Only the combined dust and food exposure from the present study has approached or even exceeded the highest tolerable daily intake (TDI) set up by the International Program on Chemical Safety (IPCS). However, due to lack of official threshold values for CP exposure on adverse human health, there are limitations on accurate risk assessment. Considering the presence of other exposure pathways, CPs' endocrine disrupter properties, as well as the multicomponent chemical "cocktails" effects, potential high risks from CP exposure may be posed to e-waste workers and local residents. Copyright © 2018 American Chemical Society.
Original languageEnglish
Pages (from-to)11510-11519
JournalEnvironmental Science & Technology
Volume52
Issue number20
Early online dateSep 2018
DOIs
Publication statusPublished - 2018

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Paraffin
Dust
Recycling
dust
Vegetables
vegetable
Fish
rice
Endocrine disrupters
endocrine disruptor
food
fish
Nutrition
Electronic Waste
exposure
electronic waste
effect
waste recycling
Risk assessment
risk assessment

Citation

Chen, H., Lam, J. C. W., Zhu, M., Wang, F., Zhou, W., Du, B., . . . Zeng, E. Y. (2018). Combined effects of dust and dietary exposure of occupational workers and local residents to short- and medium-chain chlorinated paraffins in a mega e-waste recycling industrial park in South China. Environmental Science & Technology, 52(20), 11510-11519. doi: 10.1021/acs.est.8b02625