Occurrence, composition, source, and regional distribution of halogenated flame retardants and polybrominated dibenzo-p-dioxin/dibenzofuran in the soils of Guiyu, China

Environmental Pollution
Pengjun XuYeru Huang

Abstract

Guiyu, China, is well-known for the crude disposal of electronic waste (EW) and severe persistent organic pollutants (POPs). Therefore, in this study, the occurrence, composition, and source of polybrominated diphenyl ethers (PBDEs), 2,2',4,4',5,5'-hexabromobiphenyl (BB153), some novel brominated flame retardants (NBFRs), Dechlorane Plus (DP) and polybrominated dibenzo-p-dioxins/dibenzofurans (PBDD/Fs) in farmland soils covering Guiyu were studied. In EW disposal area soils, PBDEs were the most abundant FRs, with concentrations of 13-1014 ng g(-1). The primary PBDE sources were technical Penta- and Deca-BDE mixtures in northern and southern Guiyu, respectively. The levels of BB153 were relatively low, possibly because it has been banned in the 1970s. The concentrations of hexabromobenzene (HBB) were 0.048-3.3 ng g(-1), while pentabromoethylbenzene (PBEB) was almost not detected in the soils. Two alternatives to commercial PBDEs, decabromodiphenyl ethane (DBDPE) and 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), were the primary NBFRs, with concentrations of 1.8-153 ng g(-1) and 0.43-15 ng g(-1), respectively. DP was another primary FR, with concentrations of 0.57-146 ng g(-1). Moreover, syn-DP and anti-DP isomers were not stere...Continue Reading

Citations

Nov 21, 2019·Environmental Science and Pollution Research International·Yi XingZhiliang Ma
Oct 1, 2018·Environmental Science and Pollution Research International·Yanxiao Zhou, Jinsong Liu
Nov 5, 2019·Environmental Science & Technology·Ping XiongGuibin Jiang
Dec 6, 2018·Environmental Science & Technology·Faqiang ZhanJiping Chen

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