Polychlorinated biphenyls (PCBs) and halogenated flame retardants (HFRs) in multi-matrices from an electronic waste (e-waste) recycling site in Northern China |
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| Authors: | Wen-Jun Hong Hongliang Jia Yongsheng Ding Wen-Long Li Yi-Fan Li |
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| Institution: | 1.International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering,Dalian Maritime University,Dalian,China;2.Zhejiang Scientific Research Institute of Transport,Hangzhou,China;3.IJRC-PTS, College of Ocean and Environmental Engineering, Shanghai Maritime University,Shanghai,China;4.IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology,Harbin,China |
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| Abstract: | The present study investigated the occurrence of polychlorinated biphenyls (PCBs) and halogenated flame retardants (HFRs) in soil, water, reed, air and dust samples collected from the e-waste recycling region in Ziya Town, Northern China. The results showed that the concentrations of PCBs reached relative high level in environmental matrices in the study area. HFRs including polybrominated diphenyl ethers (PBDEs), dechlorane plus (DP), allyl 2,4,6-tribromophenyl ether (ATE), tetrabromoethylcyclohexane (TBECH), pentabromotoluene (PBT), pentabromoethylbenzene (PBEB), 2,3-dibromopropyl 2,4,6-tribromophenyl ether (DPTE), 1,2-bis-(2,4,6-tribromophenoxy) ethane (BTBPE) and so on were also widely detected in multi-matrices. Long-range atmospheric transport (LRAT) potentials of non-BDE HFRs were assessed to address the LRAR abilities of these compounds. Analysis of soil–air exchange of PCBs and HFRs showed that soil acted as a secondary source to the atmosphere only for a few low molecular weight compounds, while the direction of the flux of most detected chemicals was from air to soil. |
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