CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China.
CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
Mar Pollut Bull. 2021 Mar;164:112099. doi: 10.1016/j.marpolbul.2021.112099. Epub 2021 Feb 1.
A total of seventy surface sediments were collected from fourteen estuaries of South China to investigate the distribution of polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE), 1,2-bis (2,4,6-tribromophenoxy) ethane (BTBPE) and dechlorane plus (DP). The concentrations of ΣPBDEs, DBDPE, BTBPE and DP in estuarine sediments ranged from 0.39 to 81.2, 0.18 to 49.9, not detected to 0.62, and 0.025 to 1.66 ng/g dry weight, respectively. Significant differences for levels of ΣPBDEs, DBDPE, BTBPE and DP were found among the sediments from fourteen estuaries. Sediments from the Pearl River Estuary had the highest concentrations of ΣPBDEs, DBDPE and DP. PBDEs and DBDPE were the main halogenated flame retardants in estuarine sediments. BDE 209 was predominant congener of PBDEs with an average contribution of 88.1% to the total PBDEs. 32.9% sediment samples from South China had f values lower than 0.65, suggesting that stereoselective enrichment of syn-DP occurred in estuarine sediments.
共采集了华南 14 个河口的 70 个表层沉积物，以研究多溴二苯醚（PBDEs）、十溴二苯乙烷（DBDPE）、1,2-双（2,4,6-三溴苯氧基）乙烷（BTBPE）和十氯酮（DP）的分布情况。河口沉积物中ΣPBDEs、DBDPE、BTBPE 和 DP 的浓度范围分别为 0.39 至 81.2、0.18 至 49.9、未检出至 0.62 和 0.025 至 1.66ng/g 干重。14 个河口沉积物中 ΣPBDEs、DBDPE、BTBPE 和 DP 的水平存在显著差异。珠江口沉积物中 ΣPBDEs、DBDPE 和 DP 的浓度最高。PBDEs 和 DBDPE 是河口沉积物中主要的卤代阻燃剂。BDE 209 是 PBDEs 的主要同系物，占总 PBDEs 的平均贡献率为 88.1%。华南 32.9%的沉积物样品的 f 值低于 0.65，表明顺式-DP 在河口沉积物中存在立体选择性富集。
