| 摘要: |
| 于2020—2021年对某市20个监测井80份地下水样本进行了调查。采用因子分析和聚类分析法以地下水中阳离子浓度为研究对象进行溯源分析。结果表明，地下水中阳离子浓度会受到不同程度、不同类别的人类活动影响，其阳离子的来源呈现多样化的特点，其中铅、铜、铝、锰为农业面源来源，铵、钠、总硬度是工业来源，另外，砷、铁及锌等为自然来源，而在自然来源中出现的砷、铁阳离子的富集现象，很明显是受到了城镇化及工业化的影响。锌与氢离子可能是地下水中pH值受到人类活动的影响，或者是地表水的侧向补给带来的影响。 |
| 关键词: 地下水 阳离子浓度 因子分析 聚类分析 来源分析 |
| DOI： |
| 分类号:X523 |
| 基金项目:南通市基础科学研究计划项目（JC2021167,JC2021160） |
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| Study on Cation Sources in Groundwater Based on Factor and Cluster Analysis |
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CHEN Xiu-mei
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Nantong Environmental Monitoring Center of Jiangsu Province,Nantong,Jiangsu 226006,China
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| Abstract: |
| In 2020—2021, 80 groundwater samples from 20 monitoring wells were investigated. Factor analysis and cluster analysis were used to trace the cation contents in groundwater. The results show that the concentration of cations in groundwater is affected by different degrees and different types of human activities. The sources of cations are diversified, among which lead, copper, aluminum and manganese are induced by agricultural non point sources, while ammonium, sodium and total hardness are from industrial sources. In addition, arsenic, iron and zinc come from natural sources, in which the enrichment of arsenic and iron cations is influenced by urbanization and industrialization. The increase of zinc content may be caused by the influence of human activities on the pH value of groundwater, or the influence of lateral recharge of surface water. |
| Key words: Groundwater Cation content Factor analysis Cluster analysis Source analysis |
