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Occurrence and ecological risks of brominated flame retardants and dechlorane plus in sediments from the Pearl River Estuary and Daya Bay, South China
Hu, Yongxia1,2; Li, Zongrui3; Xiong, Jingjing3; Zhang, Zaiwang4; Yuan, Jiaxin5; Tang, Yi2; Jin, Tao2; Li, Huawei5; Wu, Shengjun1
2022-12-01
摘要Considering the phasing-out of polybrominated diphenyl ethers (PBDEs), environmental concerns of PBDE al-ternatives and dechlorane plus (DP) are rising. Accordingly, this study investigates occurrence and ecological risks of PBDEs, PBDE alternatives and DPs in sediments of two littoral regions, the Pearl River Estuary (PRE) and Daya Bay (DYB), in southern China. Total PBDEs concentrations in surface sediments of the PRE and DYB were in the range (mean) of 0.30-28.7 (8.71) and 0.29-43.4 (6.05) ng/g dw, respectively. DP levels in surface sediments of the PRE (0.004-0.27 ng/g dw) were significantly higher than those in the DYB (0.005-0.24 ng/g dw) (p < 0.05). BDE 209 was the predominant component, followed by DBDPE, exhibiting regional variations in BFRs usage. Vertical profiles of BFRs and DP in the PRE and DYB sediment cores exhibited clear anthropogenic in-fluences. Risk quotients suggest critical ecological risks of tetra-, penta-and deca-BDE congeners in all the surface sediments.
关键词Brominated flame retardants Dechlorane plus Sediment Spatio-temporal trend Ecological risks
DOI10.1016/j.marpolbul.2022.114182
发表期刊MARINE POLLUTION BULLETIN
ISSN0025-326X
卷号185页码:9
通讯作者Li, Huawei(lihuawei161@mails.ucas.ac.cn)
收录类别SCI
WOS记录号WOS:000913116400008
语种英语