کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6314132 1619062 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes of accumulation profiles from PBDEs to brominated and chlorinated alternatives in marine mammals from the South China Sea
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Changes of accumulation profiles from PBDEs to brominated and chlorinated alternatives in marine mammals from the South China Sea
چکیده انگلیسی


- Brominated and chlorinated HFRs were detected in marine mammals.
- Temporal shifting trends of PBDEs to its alternatives are a novel finding.
- BTBPE, DBDPE and DP were first detected in cetaceans from the Asia-Pacific region.
- PBDEs, DP and DBDPE were the three predominant HFRs in the blubber.

The present study investigated the composition profiles and levels of polybrominated diphenyl ethers (PBDEs) and five PBDE alternatives in the blubber of two species of marine mammals, Indo-Pacific humpback dolphins (Sousa chinensis) and finless porpoises (Neophocaena phocaenoides) from the South China Sea. Despite the fact that PBDEs were the most predominant brominated flame retardants in the samples analyzed, decabromodiphenyl ethane (DBDPE), 1,2-bis (2,4,6-tribromophenoxy) ethane (BTBPE), bis- (2-ethylhexyl) -tetrabromophthalate (TBPH), 2-ethylhexyl 2,3,4,5-tetrabromobenzoate (TBB) and Dechlorane Plus (DP) were all detected in both cetacean species. In addition, significantly increasing temporal shifting trends of Deca-BDE to DBDPE, Octa-BDE to BTBPE, and Deca-BDE to DP were observed in porpoise samples between 2003 and 2012 and dolphin samples between 2003 and 2011. These patterns may be attributed to the replacement of PBDEs by alternative halogenated flame retardants (HFRs) and the increasing usage of these alternatives following the restriction/voluntary withdrawal of the production and use of PBDE commercial mixtures. Our findings suggest that the study region may be a source of contamination by PBDE alternative flame retardants due to the high detection frequencies and levels of these compounds in marine mammals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environment International - Volume 66, May 2014, Pages 65-70
نویسندگان
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