Organophosphate esters and synthetic musks in the sediments of the Yangtze River Estuary and adjacent East China Sea: Occurrence, distribution, and potential ecological risks

Bingjing Ji; Yi Liu; Yang Wu; Yi Liang; Shutao Gao; Xiangying Zeng; Peng Yao; Zhiqiang Yu

doi:10.1016/j.marpolbul.2022.113661

Organophosphate esters and synthetic musks in the sediments of the Yangtze River Estuary and adjacent East China Sea: Occurrence, distribution, and potential ecological risks

Mar Pollut Bull. 2022 Jun:179:113661. doi: 10.1016/j.marpolbul.2022.113661. Epub 2022 Apr 21.

Authors

Bingjing Ji¹, Yi Liu², Yang Wu³, Yi Liang³, Shutao Gao³, Xiangying Zeng⁴, Peng Yao⁵, Zhiqiang Yu³

Affiliations

¹ State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment and Resources, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China.
² Nanjing University & Yancheng Environmental Detecting Technology Co., Ltd, Yancheng, 224000, China.
³ State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment and Resources, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China.
⁴ State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment and Resources, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China. Electronic address: zengxy@gig.ac.cn.
⁵ Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and, Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.

PMID: 35462103
DOI: 10.1016/j.marpolbul.2022.113661

Abstract

Occurrence, distribution, and potential ecological risks of ten organophosphate esters (OPEs) and nine synthetic musks (SMs) were investigated in sediments from the Yangtze River Estuary (YRE) and adjacent East China Sea (ECS). The total concentrations of OPEs in the surface sediments ranged from 0.977 to 19.0 ng/g dry weight (dw) with tris(2-chloro-propyl) phosphate being the dominant component. Total concentrations of SMs ranged from 0.176 to 7.25 ng/g dw, with 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta(g)-2-benzopyran and 7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene as the dominant SMs. Higher sedimentary concentrations of ΣOPEs and ΣSMs were found in the river mouths of the YRE, inter face of Hangzhou Bay, and mud area of the ECS; the results suggested that terrestrial discharge might be the main source of OPEs and SMs in the studied region. Risk assessment revealed that low ecological risks were posed by OPEs, and limited to low ecological risks were posed by SMs.

Keywords: East China Sea; Organophosphorus flame retardant; Sediments; Synthetic musks; Yangtze River Estuary.

MeSH terms

China
Environmental Monitoring / methods
Esters / analysis
Estuaries
Flame Retardants* / analysis
Geologic Sediments
Organophosphates / analysis
Rivers
Water Pollutants, Chemical* / analysis

Substances

Esters
Flame Retardants
Organophosphates
Water Pollutants, Chemical