基于GIS监测技术的城市浅层地下水污染溯源方法的研究  

Study on Tracing Method of Urban Shallow Groundwater Pollution Based on GIS Monitoring Technology

作　　者：宋轶黎 SONG Yi-li(Zhejiang Lishui Ecological Environment Monitoring Center,Lishui,Zhejiang 323000,China)

机构地区：[1]浙江省丽水生态环境监测中心,浙江丽水323000

出　　处：《四川环境》2022年第6期185-190,共6页Sichuan Environment

摘　　要：为了提高水污染溯源的有效性和时效性,为水污染溯源提供可行的分析方法,提出基于GIS监测技术的城市浅层地下水污染溯源分析方法。依据地下水水文地质与流场情况,采用液相色谱质谱联用仪与固相萃取方法,采集污染物相关数据;利用Arc GIS软件模拟地下水各污染物空间分布特征,通过正定矩阵因子分解模型,取得污染物残差及其在各污染源中的贡献率,判定污染源。根据污染物空间分布特征,通过正定矩阵因子分解模型,判定出三个污染源状况,所提方法能够及时追溯水污染源,为水污染治理措施制定奠定夯实的数据基础。In order to improve the effectiveness and timeliness of water pollution traceability and provide a feasible analysis method for water pollution traceability,an urban shallow groundwater pollution traceability analysis method based on GIS monitoring technology is proposed.According to the hydrogeology and flow field of groundwater,the data related to pollutants are collected by liquid chromatography-mass spectrometry and solid-phase extraction.The spatial distribution characteristics of groundwater pollutants are simulated by Arc GIS software,and the pollutant residual and its contribution rate in each pollution source are obtained through the positive definite matrix factor decomposition model to determine the pollution source.According to the spatial distribution characteristics of pollutants,the three pollution sources are determined through the positive definite matrix factor decomposition model.The proposed method can trace the water pollution sources in time and lay a solid data foundation for the formulation of water pollution control measures.

关 键 词：GIS监测技术 城市 浅层地下水 水污染 溯源分析 正定矩阵因子分解模型 

分 类 号：X523[环境科学与工程—环境工程]