| 岩溶地下水有机污染特征分析——以贵阳市某加油站为例 |
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| 关键词:karst groundwater organic pollutants diffusion |
| 基金项目:贵州省地勘基金项目(编号: [2007]172号; [2009]94号)和贵州省地矿局科研项目(编号: [2009]20号) |
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| Analysis of Organic Pollution Characteristics of Karst Groundwater: A Case Study of a Gas Station in Guiyang |
| Many organic compounds are toxic to humans and living things, and some of them have a “three-induction effects”. Groundwater organic pollution studies began in the 1960s and 1970s. After half a century’s development, the international groundwater contamination study has turned its focus from inorganic contaminants to organic contaminants. The geological environment is fragile and the antifouling capability is poor in karst regions, where the organic pollutant distribution and migration are different from things of other regions. Exemplified by the case of the leakage of the tank at a gas station in Guiyang 15 years ago, the authors investigated the migration regularity of the underground organic pollutants, the pollution distribution and the characteristics of the organic pollutants by means of field survey, GPR, drilling and sample analysis. Through a comparative study of the results obtained in 1999, 2007 and 2012, the authors have reached some conclusions: (1) The organic pollutants have dual characteristics of enrichment and dilution in the underground affected by the karst morphology; (2) In the area where karst channel is developed and the groundwater level is lower than the bedrock surface, the underground organic pollutants content tends to decrease generally; (3) In the area where the fissures are dominant and the groundwater level is above the bedrock surface, the organic pollutants are accumulated and diffused downward slowly, and the diffusion rate can reach 12 m per year. |
| LUO Bing-jia,YANG Sheng-yuan,LUO Wei,YANG Xiu-li.2014.Analysis of Organic Pollution Characteristics of Karst Groundwater: A Case Study of a Gas Station in Guiyang[J].Acta Geoscientica Sinica,35(2):255-261. |
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