Water temperature governs organophosphate ester dynamics in the aquatic food chain of Poyang Lake

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外文摘要：Organophosphate esters(OPEs)are increasingly recognized as pervasive environmental contaminants,primarily from their extensive application in flame retardants and plasticizers.Despite their widespread presence,the intricacies of OPE bioaccumulation within aquatic ecosystems remain poorly understood,particularly the environmental determinants influencing their distribution and the bioaccumulation dynamics across aquatic food chains.Here we show that water temperature plays a crucial role in modulating the dispersion of OPE in the aquatic environment of Poyang Lake.We quantified OPE con-centrations across various matrices,uncovering levels ranging from 0.198 to 912.622 ng L-1 in water,0.013-493.36 ng per g dry weight(dw)in sediment,0.026-41.92 ng per g wet weight(ww)in plankton,0.13-2100.72 ng per g dw in benthic invertebrates,and 0.31-3956.49 ng per g dw in wild fish,high-lighting a pronounced bioaccumulation gradient.Notably,the intestines emerged as the principal site for OPE absorption,displaying the highest concentrations among the seven tissues examined.Among the various OPEs,tris(chloroethyl)phosphate was distinguished by its significant bioaccumulation potential within the aquatic food web,suggesting a need for heightened scrutiny.The propensity for OPE accu-mulation was markedly higher in benthic invertebrates than wild fish,indicating a differential vulner-ability within aquatic biota.This study lays a foundational basis for the risk assessment of OPEs as emerging contaminants and underscores the imperative to prioritize the examination of bio-accumulation effects,particularly in benthic invertebrates,to inform future environmental safeguarding strategies.

外文关键词：

Organophosphate estersDriving factorBioaccumulation and biomagnificationEcological risk

作者：

Zhenfei Yan、Chenglian Feng、Yiping Xu、Jindong Wang、Nannan Huang、Xiaowei Jin、Fengchang Wu、Yingchen Bai

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作者单位：

State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing,100012,China

College of Environment,Hohai University,Nanjing,210098,China

Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China

State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China

China National Environmental Monitoring Centre,Beijing 100012,China

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出版年：

2024

DOI：

10.1016/j.ese.2024.100401

环境科学与生态技术(英文)

ISSN：

年,卷(期)：2024.21(5)