Spatial and temporal change of tetrabromobisphenol A and hexabromocyclododecane in mangrove sediments from the Pearl River Estuary, South China

Weiyan Yang; Chuyue Long; Chenmin Xie; Jiaxun Lu; Xiaodong Wang; Canchuan Zhang; Li Zhang; Shejun Chen; Yuxin Sun

doi:10.1016/j.marpolbul.2023.115399

Spatial and temporal change of tetrabromobisphenol A and hexabromocyclododecane in mangrove sediments from the Pearl River Estuary, South China

Mar Pollut Bull. 2023 Sep;194(Pt A):115399. doi: 10.1016/j.marpolbul.2023.115399. Epub 2023 Aug 11.

Authors

Weiyan Yang¹, Chuyue Long², Chenmin Xie², Jiaxun Lu², Xiaodong Wang¹, Canchuan Zhang³, Li Zhang³, Shejun Chen⁴, Yuxin Sun⁵

Affiliations

¹ Research Center of Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China.
² Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, School of Environment, South China Normal University, Guangzhou 510006, China; South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
³ South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
⁴ Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, School of Environment, South China Normal University, Guangzhou 510006, China.
⁵ Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, School of Environment, South China Normal University, Guangzhou 510006, China. Electronic address: sunyuxin@m.scnu.edu.cn.

PMID: 37573817
DOI: 10.1016/j.marpolbul.2023.115399

Abstract

Spatial and temporal trends of tetrabromobisphenol (TBBPA) and hexabromocyclododecane (HBCD) in mangrove sediments from the Pearl River Estuary (PRE) in South China were evaluated. Concentrations of TBBPA and HBCD in mangrove sediments ranged from 0.23 to 13.3 and 0.36 to 54.7 ng g^-1 dry weight. The highest TBBPA concentration was seen in Guangzhou mangrove wetland near a dockyard and a ferry terminal where TBBPA is utilized in the coatings for the shipbuilding industry. The rapid development of building might elucidate the higher concentrations of HBCD in Shenzhen mangrove sediments. γ-HBCD and α-HBCD was the two main diastereoisomer of HBCD in mangrove sediments with contributions of 56.1 % and 34.0 %. Sediments from the three PRE mangrove ecosystems were selectively enriched for (-)-γ-HBCD. TBBPA concentrations in mangrove sediments from Guangzhou rose during 2012-2015 and declined from 2015 to 2021. HBCD concentrations in the PRE mangrove sediments exhibited an increasing trend from 2012 to 2021.

Keywords: Hexabromocyclododecane; Mangrove sediment; Spatial distribution; Temporal trend; Tetrabromobisphenol A; The Pearl River Estuary.

MeSH terms

China
Ecosystem
Environmental Monitoring
Estuaries
Flame Retardants* / analysis
Geologic Sediments
Hydrocarbons, Brominated* / analysis
Polybrominated Biphenyls* / analysis
Rivers

Substances

hexabromocyclododecane
tetrabromobisphenol A
Hydrocarbons, Brominated
Polybrominated Biphenyls
Flame Retardants