| 扬-泰-靖地区地下水系统水力联系与硫酸盐污染特征 |
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| 关键词:groundwater environmental isotopes hydraulic connection sulfate contamination Yangzhou- Taizhou-Jingjiang area |
| 基金项目:中国地质调查局地质调查项目(编号: 1212010340106; 121201063400; 1212010634404; 1212010914006) |
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| 摘要: |
| Characteristics of Hydraulic Connection and Sulfate Contamination within the Groundwater System of Yangzhou-Taizhou-Jingjiang Area |
| Distribution characteristics of environmental isotopes (D, 18O, and 34S) in groundwater of Quaternary loose soils were analyzed in Yangzhou-Taizhou-Jingjiang area to reveal the hydraulic connection between meteoric water, Yangtze River water, phreatic water and confined water, distinguish sources of sulfate in groundwater of different aquifers and identify the condition of sulfate contamination. According to the results obtained, phreatic aquifer is recharged from precipitation and Yangtze River, and sulfate originates from agricultural contamination or mixture of pollutants and marine sulfates; confined aquifers are mainly recharged from precipitation with poor hydraulic connection between confined aquifer and phreatic aquifer or Yangtze River, and sources of sulfate are different. In shallow confined water along the Yangtze River and at the top of the study area, sulfate originates from oxidation of sulfides; in deep confined water of the eastern area, sulfate originates mainly from dissolution of sulfate rocks or the retention of marine sulfates, with very insignificant contamination from sulfate of phreatic water or surface water. |
| LI Yun,JIANG Yue-hua,ZHOU Xun,JIA Jun-yuan,ZHOU Quan-ping,LI Yun-feng.2014.Characteristics of Hydraulic Connection and Sulfate Contamination within the Groundwater System of Yangzhou-Taizhou-Jingjiang Area[J].Acta Geoscientica Sinica,35(2):183-190. |
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