Bioaccumulation and translocation of organophosphate esters in a Mangrove Nature Reserve from the Pearl River Estuary, South China

Jinli Xie; Nancai Pei; Yuxin Sun; Zhongyang Chen; Yuanyue Cheng; Laiguo Chen; Chenmin Xie; Shouhui Dai; Chunyou Zhu; Xiaojun Luo; Li Zhang; Bixian Mai

doi:10.1016/j.jhazmat.2021.127909

Bioaccumulation and translocation of organophosphate esters in a Mangrove Nature Reserve from the Pearl River Estuary, South China

J Hazard Mater. 2022 Apr 5:427:127909. doi: 10.1016/j.jhazmat.2021.127909. Epub 2021 Nov 27.

Authors

Jinli Xie¹, Nancai Pei², Yuxin Sun³, Zhongyang Chen², Yuanyue Cheng⁴, Laiguo Chen⁵, Chenmin Xie¹, Shouhui Dai⁴, Chunyou Zhu⁶, Xiaojun Luo⁶, Li Zhang⁷, Bixian Mai⁶

Affiliations

¹ 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.
² Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China.
³ 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. Electronic address: sunyx@scsio.ac.cn.
⁴ 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.
⁵ State Environmental Protection Key Laboratory of Urban Ecological Environment Simulation and Protection, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou 510655, China.
⁶ State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
⁷ 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; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China. Electronic address: zhangli@scsio.ac.cn.

PMID: 34863572
DOI: 10.1016/j.jhazmat.2021.127909

Abstract

Little is known about the distribution and bioaccumulation of organophosphate esters (OPEs) in mangrove ecosystems. In this study, water, sediments, plants and animals were collected from Qi'ao Island Mangrove Nature Reserve to investigate the levels, bioaccumulation and biomagnification of OPEs. Concentrations of ΣOPEs in the mangrove plant Sonneratia apetala (an exotic species) were greater than those in Kandelia obovata (a native species). Translocation factors of OPEs in the two mangrove tree species were greater than 1, indicating that OPEs were mainly absorbed in aboveground tissues. Concentrations of OPEs in mangrove trees and animals were negatively correlated with their log K_ow, suggesting that accumulation of OPEs in mangrove biota was influenced by hydrophobicity. A significant difference for concentrations of ΣOPEs was found among the eight mangrove animal species. Concentrations of ΣOPEs in mangrove animals were related with lipid contents, feeding habits and K_ow of OPEs. Biota-sediment accumulation factor of OPEs was larger than 1, suggesting that bioaccumulation of OPEs occurred in mangrove animals. The targeted OPEs except isodecyl diphenyl phosphate were not biomagnified in mangrove animals. This study highlights bioaccumulation of OPEs in mangrove biota and suggests further concern about the ecological risk of OPEs to mangrove biota.

Keywords: Bioaccumulation; Organophosphate esters; The Pearl River Estuary; Translocation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Animals
Bioaccumulation
China
Ecosystem
Environmental Monitoring
Esters
Estuaries*
Organophosphates
Rivers
Water Pollutants, Chemical* / analysis

Substances

Esters
Organophosphates
Water Pollutants, Chemical