海湾
有机磷
环境化学
沉积物
环境科学
陆源沉积物
磷酸盐
TCEP
污染物
生物累积
化学
杀虫剂
生态学
海洋学
地质学
生物
古生物学
生物化学
有机化学
磷化氢
催化作用
作者
Minmin Hou,Bona Zhang,Longfei Zhou,H. L. Ding,X.L. Zhang,Yunfeng Shi,Guangshui Na,Yaqi Cai
标识
DOI:10.1016/j.jhazmat.2023.133264
摘要
This study monitored 20 organophosphate esters (OPEs) in water and sediment from three typical mariculture bases (Yunxi Marine Ranching (YX), Hangzhou Bay (HZB), and Zhelin Bay (ZLB)) and Meiliang Bay (MLB) of Taihu Lake in China, focusing on the spatial distribution and sources of OPEs. Moreover, the occurrence and risk of OPEs in fishes from ZLB were evaluated. The ∑OPE concentrations in waters followed the order MLB (591 ng/L) > YX (102 ng/L) > HZB (70.0 ng/L) > ZLB (37.4 ng/L), with tri(1-chloro-2-propyl) phosphate (TCIPP), triethyl phosphate (TEP), and tri(2-chloroethyl) phosphate (TCEP) being the dominant OPEs. Significantly higher ∑OPE concentrations were found in sediment in MLB compared to the other three areas with similar levels. The decreasing concentrations of OPEs from nearshore to offshore areas in HZB and MLB indicated that terrigenous input is the main source of OPEs. The even distribution of OPEs in YX and ZLB combined with PCA analysis suggested ship traffic or aquaculture activities are also potential sources. The ∑OPE concentrations in fishes ranged from 0.551-2.45 ng/g wet weight, with TCIPP, tri-phenyl phosphate (TPHP), and TCEP being the main OPEs. Hydrophobicity was a key factor affecting the sediment-water distribution coefficients and the bioaccumulation factors of OPEs. The human exposure to OPEs through consumption of fishes from ZLB had a low health risk. Organophosphate esters (OPEs) have been highly concerned due to their wide applications, ubiquitous environmental occurrence, and various toxic effects. However, studies on OPEs in coastal aquaculture waters, especially those with high seafood productions, were currently limited, which was closely related to seafood quality and human health. In this study, the characteristic, distribution, and sources of OPEs in three typical mariculture areas and one freshwater aquaculture area in China were investigated. Additionally, OPEs in fishes from Zhelin Bay and relevant health risk were evaluated. The results were imperative for assessing the environmental risks and providing proper pollution control strategies of OPEs.
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