石油
汽油
环境科学
甲烷
包气带
烃源岩
污染
碳氢化合物
生物降解
环境化学
天然气
土壤污染
化石燃料
石油工程
废物管理
环境工程
地质学
土壤水分
化学
土壤科学
生态学
工程类
古生物学
有机化学
构造盆地
生物
作者
Paul D. Lundegard,Robert E. Sweeney,G. Todd Ririe
标识
DOI:10.1006/enfo.1998.0002
摘要
Abstract Hydrocarbon vapors associated with spilled petroleum products arouse regulatory concern and can pose a significant health and safety risk. While petroleum products do not contain a significant amount of methane (CH 4 ), high CH 4 contents in soil gas near petroleum spills have been reported. While CH 4 is nontoxic, its accumulation in shallow soil gas represents a potential explosion and asphyxiation hazard, especially in confined spaces. Identifying the source and origin of shallow CH 4 accumulations is an important part of evaluating potential exposure pathways, selecting appropriate remedial measures, and determining environmental liability. This paper discusses the potential nature and anthropogenic sources for shallow CH 4 and how integration of geological, geochemical, and land use data can be used to determine its origin and identify its source. Two case studies are presented, one where CH 4 associated with a gasoline spill is shown to be derived from a natural source rather than the gasoline, and a second where CH 4 associated with spilled crude oil is shown to be produced in the vadose zone by biodegradation of the oil.
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