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- Title
Distribution, accumulation profile, and risk assessment of polybrominated diphenyl ethers in sediment from lake and river systems in Hanoi Metropolitan Area, Vietnam.
- Authors
Mai, Pham Thi Ngoc; Van Thuong, Nguyen; Tham, Trinh Thi; Hoang, Nguyen Khanh; Anh, Hoang Quoc; Tri, Tran Manh; Hung, Le Si; Nhung, Dao Thi; Nam, Vu Duc; Hue, Nguyen Thi Minh; Huong, Nguyen Thi Anh; Anh, Duong Hong; Minh, Nguyen Hung; Minh, Tu Binh
- Abstract
Concentrations of seven polybrominated diphenyl ethers (PBDEs) congeners were determined in surface sediments collected from several rivers and lakes in Hanoi, the capital city of Vietnam, to understand the status of background contamination, accumulation pattern, sources, and toxic implications for benthic organisms. Total PBDE concentrations in all sediment samples ranged from 0.03 to 17.5 ng/g dry weight (mean 1.33 ng/g dry wt). The most predominant congeners were BDE-47 and BDE-99, which comprised 30 and 25 % of total PBDE concentrations, respectively. Results from statistical analysis indicated that the potential sources of PBDEs of sediments in Hanoi may come from penta-BDE and octa-BDE mixtures. Risk quotients of PBDEs in sediments were also calculated for a benthic species, ranged from 2.12 × 10−6 − 1.60 × 10−2, and were markedly lower than threshold value for occurrence of any ecotoxicological risk. This study provides some of the most comprehensive data on the occurrence of PBDEs in sediments from lake and river systems in Vietnam.
- Subjects
HANOI (Vietnam); POLYBROMINATED diphenyl ethers; EMISSIONS trading; RISK assessment; LAKE sediments; RIVER sediments
- Publication
Environmental Science & Pollution Research, 2018, Vol 25, Issue 8, p7170
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-015-5235-7