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

作者：Zhenfei Yan, Chenglian Feng, Yiping Xu, Jindong Wang, Nannan Huang, Xiaowei Jin, Fengchang Wu, Yingchen Bai · 发表于：Environmental Science and Ecotechnology · 年份：2024 · DOI：10.1016/j.ese.2024.100401 · 被引用次数：26 · 研究领域：Toxic Organic Pollutants Impact、Environmental Toxicology and Ecotoxicology、Pharmaceutical and Antibiotic Environmental Impacts

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 concentrations 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, highlighting 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 accumulation was markedly higher in benthic invertebrates than wild fish, indicating a differential vulnerability within aquatic biota. This study lays a foundational basis for the risk assessment...