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Chuyue Long, Weiyan Yang, Jiaxun Lu, Yuanyue Cheng, Ning Qiu, Sen Du, Li Zhang, Shejun Chen, Yuxin Sun. Tetrabromobisphenol A and hexabromocyclododecane in sediments from the Pearl River Estuary and South China Sea[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-023-2267-6
Citation: Chuyue Long, Weiyan Yang, Jiaxun Lu, Yuanyue Cheng, Ning Qiu, Sen Du, Li Zhang, Shejun Chen, Yuxin Sun. Tetrabromobisphenol A and hexabromocyclododecane in sediments from the Pearl River Estuary and South China Sea[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-023-2267-6

Tetrabromobisphenol A and hexabromocyclododecane in sediments from the Pearl River Estuary and South China Sea

doi: 10.1007/s13131-023-2267-6
Funds:  The Guangdong Basic and Applied Basic Research Foundation under contract Nos 2021B1515020040 and 2021A1515011526; the National Natural Science Foundation of China under contract Nos 42277246 and U224422; and Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) under contract No 2019BT02H594.
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  • Corresponding author: E-mail: sunyuxin@m.scnu.edu.cn
  • Received Date: 2023-04-18
  • Accepted Date: 2023-09-11
  • Available Online: 2023-10-19
  • Marine sediments were collected from the Pearl River Estuary (PRE) and South China Sea (SCS) to study the occurrence and spatial distribution of tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCDD). The levels of TBBPA and HBCDD in sediments ranged from not detected (nd) to 6.14 ng/g dry weight (dw) and nd to 0.42 ng/g dw. TBBPA concentrations in marine sediments were substantially higher than HBCDD. The concentrations of TBBPA and HBCDD in the PRE sediments were significantly greater than those in the SCS. α-HBCDD (48.7%) and γ-HBCDD (46.2%) were the two main diastereoisomers of HBCDD in sediments from the PRE, with minor contribution of β-HBCDD (5.1%). HBCDD were only found in one sample from the northern SCS. The enantiomeric fraction of α-HBCDD in sediments from the PRE was obviously greater than 0.5, indicating an accumulation of (+)-α-HBCDD. The enantiomers of HBCDD were not measured in sediments from the SCS. This work highlighted the environmental behaviors of TBBPA and HBCDD in marine sediments.
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