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Potential of microplastics participate in selective bioaccumulation of low-ring polycyclic aromatic hydrocarbons depending on the biological habits of fishes

文献类型： 外文期刊

作者： Li, Haiyan 1 ; Wang, Xuesong 3 ; Mai, Yongzhan 1 ; Lai, Zini 1 ; Zeng, Yanyi 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Key Lab Prevent & Control Aquat Invas Alien Specie, Minist Agr & Rural Affairs, Guangzhou 510380, Peoples R China

2.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Guangdong Prov Key Lab Aquat Anim Immunol & Sustai, Guangzhou 510380, Peoples R China

3.Guangdong Acad Sci, Guangdong Prov Engn Res Ctr Ambient Mass Spectrome, Inst Anal, Guangdong Prov Key Lab Chem Measurement & Emergenc, Guangzhou 510070, Peoples R China

4.100 Xianlie Middle Rd, Guangzhou 510070, Peoples R China

关键词： Microplastics; Polycyclic aromatic hydrocarbons; Bioaccumulation; Habits; Fishes

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2023 年 858 卷

页码：

收录情况： SCI

摘要： Currently, although the cumulative effects of microplastics (MPs) and organic pollutants (OPs) in the environment and within organisms are being investigated, whether and how MPs participate in bioaccumulation of OPs based on a car-rier effect is still unclear. In the present study, water and aquatic organisms were collected from the Pearl River. Poly -cyclic aromatic hydrocarbons (PAHs) and MPs were separated by solid phase extraction and were measured by gas chromatography mass spectrometry and Fourier transform infrared spectroscopy, respectively. Higher PAH concentra-tions at the river outlet and higher MPs abundance in the inner river were observed, indicating a mismatched distribu-tion between PAHs and MPs. No correlation between MP abundance and PAH concentration in fishes was detected, implying that MPs exerted limited influence on PAH concentrations. Interestingly, bioconcentration factors of one major low-ring PAH (phenanthrene) in fishes showed a significant correlation with MPs abundance, implying that al-though MPs did not affect the variation in PAH concentrations, they potentially participated in selective bioaccumula-tion of PAHs. Moreover, significant correlations between MPs abundance and PAHs in fishes with different feeding and living habits were found, indicating that MPs' participation in PAH bioaccumulation was dependent on fish biology and life history. Furthermore, the health risk posed by PAHs in fishes at the river outlet surpassed the line of potential high risk, while the ecological risk posed by MPs at the inner river was in the danger category, indicating the ecological risks posed by PAHs and MPs are uneven along the Pearl River. These findings deepen our understanding of the under-lying mechanism of MPs participating in selective bioaccumulation of low-ring PAHs in fishes based on fish biology and point out the present risks posed by these two pollutants in the Pearl River and its estuary, which contribute to aquatic environmental protection and fishery production in this region.

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