Abiotic behavior of entrapped petroleum products in the subsurface during leaching
- 作者：Dror ; Ishai ; Gerstl ; Zev ; Prost ; Rene ; Yaron ; Bruno
- 关键词：VPHM ; Field experiment ; Leaching ; Redistribution ; Dissolution ; Natural attenuation
- 刊名：Chemosphere
- 出版年：2002
- 期刊代码：15_00456535
- 类别：env
- 出版时间：December, 2002
- 卷：49
- 期：10
- 页码：1375-1388
- 文件大小：481 K
摘要
Petroleum products are generally volatile hydrocarbon mixtures. These mixtures may contaminate land surfaces, the unsaturated zone and ground waters at numerous sites and thus represent a long-term source of environmental subsurface pollution. Based on laboratory and field evidence obtained by our research groups and others we emphasize in the present review paper the effect of leaching on the abiotic processes controlling the fate of volatile petroleum hydrocarbon mixtures (VPHMs) in the soil environment. The modification of petroleum hydrocarbon mixtures due to changes in the soil water content is considered the result of a “leaching phenomenon”. The experimental evidence of VPHM behavior in the porous media is linked to four major processes: retention, redistribution and attenuation in the subsurface, and dissolution in the soil water.