Spatial distribution, partitioning, and ecological risk of short chain chlorinated paraffins in seawater and sediment from East China Sea

Hongmei Hu; Hangbiao Jin; Tiejun Li; Yuanming Guo; Pengfei Wu; Kaida Xu; Wenbin Zhu; Yanqiu Zhou; Meirong Zhao

doi:10.1016/j.scitotenv.2021.151932

Spatial distribution, partitioning, and ecological risk of short chain chlorinated paraffins in seawater and sediment from East China Sea

Sci Total Environ. 2022 Mar 10:811:151932. doi: 10.1016/j.scitotenv.2021.151932. Epub 2021 Nov 26.

Authors

Hongmei Hu¹, Hangbiao Jin², Tiejun Li³, Yuanming Guo³, Pengfei Wu⁴, Kaida Xu³, Wenbin Zhu³, Yanqiu Zhou⁵, Meirong Zhao⁶

Affiliations

¹ Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, PR China; Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China.
² Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China.
³ Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, PR China.
⁴ State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR 999007, PR China.
⁵ Department of Epidemiology and Biostatistics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China.
⁶ Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China. Electronic address: zhaomr@zjut.edu.cn.

PMID: 34838909
DOI: 10.1016/j.scitotenv.2021.151932

Abstract

Short chain chlorinated paraffins (SCCPs) have attracted increasing attention due to their potential risks to the ecosystem and human health. However, there is still a lack of systematic research on their environmental fate in the coastal marine environment. In this study, we collected paired seawater (n = 40) and surface sediment samples (n = 40) from East China Sea, and investigated their spatial distribution, partitioning behaviors and ecological risks. The total SCCP concentrations (∑SCCPs) in seawater and sediment samples were in the range of 12.2-430 ng/L and 89.6-351 ng/g (dry weight), respectively. C_10-11 SCCPs and Cl_5-7 SCCPs were the predominant homologues in all of the samples. This study first calculated the field-based logK_OC values for ∑SCCPs in the marine environment, which ranged from 5.0 to 6.5 (mean 5.5). The logK_OC values of SCCP homologues (range 3.6-8.0, mean 5.6) showed a weak correlation with their logK_OW (R = 0.214, p < 0.05). A preliminary risk assessment indicated that SCCPs at current levels posed no significant ecological risk. Overall, this study contributes to the further understanding of environmental behaviors of SCCPs in the marine environment.

Keywords: Ecological risk; Partitioning; Seawater; Sediment; Short chain chlorinated paraffins.

MeSH terms

China
Ecosystem
Environmental Monitoring
Humans
Hydrocarbons, Chlorinated* / analysis
Paraffin* / analysis
Seawater

Substances

Hydrocarbons, Chlorinated
Paraffin