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Species-specific accumulation of polybrominated diphenyl ethers (PBDEs) and other emerging flame retardants in several species of birds from Korea

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Abstract

Few studies have been conducted on the alternatives to legacy flame retardants in avian species worldwide. In this study, polybrominated diphenyl ethers (PBDEs) and alternative flame retardants such as novel brominated flame retardants (NBFRs) and dechlorane plus (DP) were determined in livers of 10 species of birds from Korea to elucidate species-specific accumulation, biological factors that affect accumulation, and bioaccumulation potentials of these contaminants. Among the emerging alternative flame retardants, the highest occurrence was found for bis(2-ethylhexyl)-3,4,5,6-tetrabromo-phthalate (BEHTBP), syn-DP, anti-DP, and decabromodiphenyl ethane (DBDPE). PBDE concentrations (median: 17.1 ng/g lipid wt) measured in our study were within the ranges reported in previous studies, while the concentrations of BEHTBP, BTBPE and DP were greater than those reported earlier. Residential predatory birds showed significantly greater concentrations of PBDEs and NBFRs than migratory predators and passerine birds. The concentrations of PBDEs, BEHTBP, and DP in residential predatory birds were significantly correlated with increasing stable nitrogen isotope ratio (delta N-15), which indicated biomagnification potentials of these contaminants. Our results suggest that the concentrations and accumulation patterns of PBDEs, NBFRs, and DP depend on the feeding habits and migration patterns of avian species. This is the first report on the accumulation of emerging alternatives to PBDEs in birds from Korea. (C) 2016 Elsevier Ltd. All rights reserved.This study was supported by the 'Development of Techniques for Assessment and Management of Hazardous Chemicals in the Marine Environment' funded by the Ministry of Oceans and Fisheries and National Research Foundation (2013M3A9A5047052), Korea

Topics: Dechlorane, DBDPE, BEHTBP, Bioaccumulation, Flame retardant, LAURENTIAN GREAT-LAKES, PERSISTENT ORGANIC POLLUTANTS, KESTRELS FALCO-SPARVERIUS, DECHLORANE PLUS, SOUTH CHINA, AMERICAN KESTRELS, BIOACCUMULATION, CONTAMINANTS, EGGS, PROFILES
Publisher: ELSEVIER SCI LTD
Year: 2016
DOI identifier: 10.1016/j.envpol.2016.10.040
OAI identifier: oai:repository.hanyang.ac.kr:20.500.11754/71368
Provided by: HANYANG Repository
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