Estimating Emissions and Environmental Fate of Di-(2-ethylhexyl) Phthalate in Yangtze River Delta, China: Application of Inverse Modeling
文献类型： 外文期刊
作者： Zhan, Yu 1 ; Sun, Jianteng 1 ; Luo, Yuzhou 3 ; Pan, Lili 1 ; Deng, Xunfei 4 ; Wei, Zi 5 ; Zhu, Lizhong 1 ;
作者机构： 1.Zhejiang Univ, Dept Environm Sci, Hangzhou 310058, Zhejiang, Peoples R China
2.Zhejiang Prov Key Lab Organ Pollut Proc & Control, Hangzhou 310058, Zhejiang, Peoples R China
3.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA
4.Zhejiang Acad Agr Sci, Inst Digital Agr, Hangzhou 310021, Zhejiang, Peoples R China
5.Zhejiang Univ, Anal & Measurement Ctr, Hangzhou 310058, Zhejiang, Peoples R China
期刊名称：ENVIRONMENTAL SCIENCE & TECHNOLOGY （ 影响因子：9.028； 五年影响因子：9.922 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： A georeferenced multimedia model was developed for evaluating the emissions and environmental fate of di-2-ethylhexyl phthalate (DEHP) in the Yangtze River Delta (YRD), China. Due to the lack of emission inventories, the emission rates were estimated using the observed concentrations in soil as inputs for the multimedia model solved analytically in an inverse manner. The estimated emission rates were then used to evaluate the environmental fate of DEHP with the regular multimedia modeling approach. The predicted concentrations in air, surface water, and sediment were all consistent with the ranges and spatial variations of observed data. The total emission rate of DEHP in YRD was 13.9 thousand t/year (95% confidence interval: 9.4-23.6), of which urban and rural sources accounted for 47% and 53%, respectively. Soil in rural areas and sediment stored 79% and 13% of the total mass, respectively. The the total emissions of DEHP but was only associated with 0.2% of the total mass due to fast degradation and intensive deposition. We suggest the use of an inverse modeling approach under a tiered risk assessment framework to assist future development and refinement of DEHP emission inventories.
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