Accumulation characteristics and fate modeling of phthalic acid esters in surface water from the Three Gorges Reservoir area,China  

作　　者：Shuai Sun Bing Zhang Junjie Hu Wen Gu Zhen Wang Deling Fan Feng Ge Lili Shi Lei Wang 

机构地区：[1]Nanjing Institute of Environmental Science,Ministry of Ecology and Environment of the People’s Republic of China,Nanjing 210042,China [2]Key Laboratory of Pesticide Environmental Assessment and Pollution Control,Ministry of Ecology and Environment of the People’s Republic of China,Nanjing 210042,China [3]Solid Waste and Chemicals Management Center,Ministry of Ecology and Environment of the People’s Republic of China,Beijing 100029,China

出　　处：《Journal of Environmental Sciences》2025年第3期46-56,共11页环境科学学报(英文版)

基　　金：supported by the Innovation Fund of Nanjing Institute of Environmental Science,Ministry of Ecology and Environment,China(No.ZX2023QT003);the National Natural Science Foundation of China(No.22306130);Jiangsu Funding Program for Excellent Postdoctoral Talent(No.2022ZB789);the Ecological Environment Research Project of Jiangsu Province,China(No.2022014).

摘　　要：Phthalic acid esters(PAEs)are a group of compounds widespread in the environment.To investigate the occurrence and accumulation characteristics of PAEs,surface water samples were collected from the Three Gorges Reservoir area,China.The total concentrations of∑_(11)analyzed PAEs(11PAEs)in the collected water samples ranging from 197.7 to 1,409.3 ng/L(mean±IQR:583.1±308.4 ng/L).While DEHP was the most frequently detected PAE,DnBP and DnNP were the most predominant PAEs in the analyzed water samples with a mean contribution of 63.3%of the∑_(11)PAEs.The concentrations of the∑_(11)PAEs in the water samples from the upper reaches of the Yangtze River were significantly higher than those from themiddle reaches.To better understand the transport and fate of the PAEs,seven detected PAEs were modeled by Quantitative Water Air Sediment Interaction(QWASI).The simulated and measured values were close for most PAEs,and differences are within one order of magnitude even for the worst one.For all simulated PAEs,water and particle inflow were main sources in the reservoir,whereas water outflow and degradation in water were important removal pathways.The contribution ratios of different sources/losses varied fromPAEs,depending on their properties.The calculated risk quotients of DnNP in the Three Gorges Reservoir area whether based onmonitoring or simulating results were all far exceeded the safety threshold value,implying the occurrence of this PAE compound may cause potential adverse effects for the aquatic ecology of the Three Gorges Reservoir area.

关 键 词：Phthalic esters Surface water Transport and fate Three Gorges Reservoir area Risk assessment 

分 类 号：X143[环境科学与工程—环境科学]