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Environmental geochemistry and health

Pollution profiles and risk assessment of PBDEs and phenolic brominated flame retardants in water environments within a typical electronic waste dismantling region.


PMID 25503846

Abstract

The aim of this study was to assess the pollution profiles of various typical brominated flame retardants in water and surface sediment near a typical electronic waste dismantling region in southern China. We found that polybrominated diphenyl ethers (PBDEs), 2,4,6-tribromophenol (TBP), pentabromophenol (PeBP), tetrabromobisphenol A (TBBPA), and bisphenol A (BPA) were ubiquitous in the water and sediment samples collected in the study region. In water, Σ19PBDEs (sum of all 20 PBDE congeners studied except BDE-209, which was below the detection limit) levels ranged from 0.31 to 8.9xa0×xa010(2)xa0ngxa0L(-1). TBP, PeBP, TBBPA, and BPA concentrations in the water samples ranged from not being detectable (nd-under the detection limit) to 3.2xa0×xa010(2) (TBP), from nd to 37 (PeBP), from nd to 9.2xa0×xa010(2) (TBBPA) and from nd-8.6xa0×xa010(2) ng L(-1) (BPA). In sediment, Σ19PBDEs ranged from nd to 5.6xa0×xa010(3) ngxa0g(-1), while BDE-209 was the predominant congener, with a range of nd to 3.5xa0×xa010(3) ngxa0g(-1). Tri- to hepta-BDE concentrations were significantly (pxa0