期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

2007年 第1卷 第2期

摘要

关键词

相关研究

回顶部

《环境科学与工程前沿（英文）》 >> 2007年 第1卷 第2期 doi: 10.1007/s11783-007-0029-x

Dynamic fate modeling of γ-hexachlorocyclohexane in the lower reaches of the Liao River

1.Department of Environmental Science and Technology, School of Environmental and Biological Science & Technology, Dalian University of Technology, Dalian 116024, China; 2.Environmental Protection Company of Dalian, Dalian 116023, China;

发布日期： 2007-06-05
HTML17 PDF 2 收藏 0

下一篇 上一篇

摘要

A QWASI model dependent on temperature is parameterized to describe the long-term fate of persistent organic pollutants (POPs) in the Liao River. The model parameters, namely fugacity capacity, degradation rate, and transfer coefficient, are profoundly affected by temperature. This model is used to simulate the fate of γ-hexachlorocyclohexane (γ-HCH) in the lower reaches of the Liao River from 1998 to 2008. Modeling results show that γ-HCH fugacity capacities in air, water, and sediment increase as temperature decreases, and the transfer and transformation rate coefficients increase as temperature increases. The variations of transfer and transformation parameter values depend on fugacity capacities, and transfer and transformation coefficients simultaneously. The performance of the model is evaluated by comparing the predicted and observed concentrations in the water and sediment of the Liao River. The predicted values agree well with the observed value in the order of magnitude, in most cases within the factor of 3. It is believed that the model is appropriate for simulating the long term fate of POPs in the Liao River.

相关研究