GIS技术在城市地下水重金属浓度识别与分级中的应用（英文）

编号 zgly0001584698

文献类型 期刊论文

文献题名 GIS技术在城市地下水重金属浓度识别与分级中的应用（英文）

作者 SobiaAshraf  FarhatAbbas  MuhammadIbrahim  UmerRashid  ShoaibKhalid  HammadRazaAhmad  KhalidRehmanHakeem  TahirMajeed 

作者单位 DepartmentofEnvironmentalSciencesandEngineering  GovernmentCollegeUniversity  InstituteofAdvancedTechnology  UniversitiPutraMalaysia  DepartmentofGeography  GovernmentCollegeUniversity  InstituteofSoil&EnvironmentalSciences  Universityof 

母体文献 Journal of Geographical Sciences 

年卷期 2015年02期

年份 2015 

分类号 X523 

关键词 heavymetals  groundwatercontamination  Faisalabad  pollutionmitigation 

文摘内容 Groundwater is the most appropriate and widely used source of drinking water,which is increasingly threatened by pollution from industrial and agricultural activities.To check the severity of the problem,156 groundwater samples were collected from various depths(60-110 ft) of 52 different localities in Faisalabad city,the third largest metropolis in Pakistan,and analyzed for the metals(Zn,Cu,Cd,Ni,Pb,Mn and Fe) concentration in 2009.Quantification was done by using Flame Atomic Absorption Spectrophotometer technique and the results were compared with WHO standards for drinking water quality.Results showed that the levels of Cu,Mn and Fe were below the WHO standards while the concentrations of Zn,Cd,Ni and Pb were above the recommended levels of safe drinking water.Correlation analysis among the occurrence of these heavy metals revealed a highly significant and positive correlation of Mn with Zn and Fe.A significant and positive correlation of Cd was also found with Cu and groundwater depth showing that there is strong association between Cu-Cd pair and that the Cd concentration varies with depth of groundwater in the study area.Regional patterns of heavy metals occurrence were mapped using Geographical Information System(GIS) for the identification and demarcation of risk areas.The concentration maps may be used by policymakers of the city to mitigate groundwater pollution.