Sediment contamination with polybrominated diphenyl ethers and alternative brominated flame retardants: case study in urban lakes of Hanoi, Vietnam

Anh Quoc Hoang; Hanh Thi Duong; Ha Thu Trinh; Kiwao Kadokami; Shin Takahashi

doi:10.1007/s11356-022-24393-8

Sediment contamination with polybrominated diphenyl ethers and alternative brominated flame retardants: case study in urban lakes of Hanoi, Vietnam

Environ Sci Pollut Res Int. 2023 Mar;30(11):31436-31445. doi: 10.1007/s11356-022-24393-8. Epub 2022 Nov 30.

Authors

Anh Quoc Hoang¹, Hanh Thi Duong², Ha Thu Trinh³, Kiwao Kadokami⁴, Shin Takahashi⁵

Affiliations

¹ Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hanoi, 11000, Vietnam.
² Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 11300, Vietnam. dthanh.iet@gmail.com.
³ Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 11300, Vietnam.
⁴ Institute of Environmental Science and Technology, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu, Fukuoka, 808-0135, Japan.
⁵ Center of Advanced Technology for the Environment (CATE), Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, 790-8566, Japan.

PMID: 36449233
DOI: 10.1007/s11356-022-24393-8

Abstract

Information regarding the contamination of brominated flame retardants (BFRs) in lake sediments from Vietnam and Southeast Asia is still very limited. To fill such knowledge gaps, surface sediment samples from five urban lakes in Hanoi, Vietnam, were analyzed for polybrominated diphenyl ethers (PBDEs) and some other BFRs. Concentrations of total PBDEs ranged from 1.1 to 26 (median 6.6) ng/g dry weight with the most predominant congeners as BDE-209 (62 ± 17%), BDE-99 (10 ± 8%), and BDE-47 (6 ± 5%). Concentrations of other BFRs decreased in the order: decabromodiphenyl ethane (DBDPE) > 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) > hexabromobiphenyl (BB-153) > pentabromoethylbenzene (PBEB), which were about one to two orders of magnitude lower than PBDEs. BDE-209 and DBDPE were highly correlated (Pearson's r = 0.879; p < 0.01), suggesting their similar applications and/or environmental fate. Potential sources of BFRs in lake sediments are estimated to be wastewater discharge, riverine inflow, and atmospheric deposition.

Keywords: BFRs; PBDEs; Sediment; Urban lake; Vietnam.

MeSH terms

Environmental Monitoring
Flame Retardants* / analysis
Halogenated Diphenyl Ethers* / analysis
Lakes
Vietnam

Substances

decabromobiphenyl ether
Halogenated Diphenyl Ethers
Flame Retardants

Grants and funding

ĐLTE00.05/22-23/Vietnam Academy of Science and Technology