| 地下水有机污染的水文地球化学标志物探讨——以河南油田为例 |
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| 引用本文： | 郭华明,陈艳玲,等.地下水有机污染的水文地球化学标志物探讨——以河南油田为例[J].地球科学,2001,26(3):304-308. |
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| 作者姓名： | 郭华明 陈艳玲 |
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| 作者单位： | [1]中国地质大学工程学院，湖北武汉430074 [2]中国地质大学材料科学与化学工程学院，湖北武汉430074 |
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| 基金项目： | 国家自然科学基金重点项目!(No .49832 0 0 5 )，国家攀登计划预选项目!(95 -预 -39) |
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| 摘 要： | 经过野外现场调查和取样分析及室内研究得知南阳油田地下水已遭受不同程度的有机物污染，且污染范围可能进一步向油田南部扩散。根据近似地下水流线方向上地下水中总油质量浓度和Fe,Mn等无机组分的变化势态，结合含水介质化学分析结果，发现硫酸盐、Fe和Mn可作为地下水有机污染和地球化学标志物。在含水介质中Fe和Mn质量浓度较高的地方，地下水有机污染物降解速度快，含水介质中Fe和Mn的氧化物和氢氧化物的还原作用导致了含水层介质中Fe和Mn的缺乏和地下水中溶解Fe和Mn的积聚；在含水介质中Fe和Mn质量浓度低的地方，地下水中的有机物质量浓度并没有降低，相应地地下水中溶解Fe和Mn的质量浓度也很低。同时，由于有机污染物的存在使地下水中硫酸盐被还原，导致城下水中硫酸盐质量浓度偏低，且地下水中Fe对有机物污染的敏感性比Mn强。
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| 关 键 词： | 吸附 降解 标志物 氧化还原 敏感性 地下水 有机污染 水文地球化学 |
| 文章编号： | 1000-2383(2001)03-0304-05 |
GEOCHEMICAL INDICATORS OF ORGANIC CONTAMINATION IN GROUNDWATER: A CASE STUDY IN HENAN OILFIELD |
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| Guo Huaming ,Wang Yanxin ,Chen Yanling ,Wang Yumei.GEOCHEMICAL INDICATORS OF ORGANIC CONTAMINATION IN GROUNDWATER: A CASE STUDY IN HENAN OILFIELD[J].Earth Science-Journal of China University of Geosciences,2001,26(3):304-308. |
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| Authors: | Guo Huaming Wang Yanxin Chen Yanling Wang Yumei |
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| Institution: | Guo Huaming 1,Wang Yanxin 1,Chen Yanling 2,Wang Yumei 3 |
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| Abstract: | Field and laboratory investigations indicate that organic contaminants have polluted the groundwater and the contaminated area is extending further to the southern part of the Henan Oilfield. Based on the relationship among total oil, inorganic components (such as sulphate, dissolved iron and manganese), and chemical composition of aquifer matrix along the groundwater flow path, sulphate, dissolved iron and manganese are inferred as geochemical indicators of organic contamination of groundwater. The organic contaminants are degraded rapidly in the aquifer where the content of iron and manganese of aquifer matrix is high. The reduction of ferric and manganese oxyhydroxides has resulted in the lack of the iron and manganese in the aquifer and the accumulation of dissolved iron and manganese in the groundwater. In contrast, the organic pollutants are degraded slowly where the content of ferric and manganese oxyhydroxides of aquifer matrix is low, and so are the concentrations of dissolved iron and manganese of groundwater. Besides, the reduction of sulfate has led to the decrease in the sulfate concentration of groundwater and dissolved iron is more sensitive to the organic contaminants than manganese. |
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| Keywords: | adsorption degradation geochemical indicator redox sensitivity |
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