期刊

ACS ES&T Water

标题

Temporal Trends of Short- and Medium-Chain Chlorinated Paraffins in Mollusks from the Chinese Bohai Sea during 2011–2018

作者

Yingjun Wang, Xindong Ma, Wei Gao, Chang Li, Lingyi Meng, Huifang Zhong, Yawei Wang, and Guibin Jiang

摘要

Short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) are among the most complex and commonly used chlorinated pollutants in the environment. Their temporal and spatial trends can be used to evaluate the effectiveness of regulations on their production and usage. In this study, mollusks (n = 308) were collected to study their temporal and spatial trends (as well as congener patterns) in different species collected from the Chinese Bohai Sea during 2011–2018. The total concentrations of SCCPs and MCCPs were 28.2–6026 ng/g of dry weight (dw) (mean of 578 ng/g of dw) and nd–4342 ng/g of dw (mean of 356 ng/g of dw), respectively. No obvious temporal or spatial trends of CPs in mollusks were found. However, the homologue profile variance and temporal trends of SCCPs and MCCPs across sampling years suggested changes in the composition of CP industrial products. Compared to the other species, oysters had the highest concentrations of CPs, implying that their bioaccumulation activity might be higher than those of other species. Upon combination of results of biological accumulative capacity and the correlation of CP concentrations among the different species, Neverita didyma, Meretrix meretrix, and Crassostrea talienwhanensis are more appropriate than other species for indicating the pollution of CPs in the Chinese Bohai Sea.

原文链接

https://pubs.acs.org/doi/10.1021/acsestwater.0c00086