Screening of Priority Control Pollutants of Groundwater in Barkol-Yiwu Basin
In order to determine the priority control pollutants of groundwater in the Barkol-Yiwu Basin,the background val-ues of inorganic indicators in groundwater were determined by the box whisker diagram method and the cumulative frequency method,and the improved Nemero index method based on the classification combination was used to screen the inorganic pri-ority control pollutants in groundwater.Organic priority control pollutants identification method based on detection rate,detec-tion concentration and toxicological properties of pollutants was used to screen organic pollutants.The absolute principal com-ponent analysis-multiple linear regression model and land use type analysis were used to preferentially control the source of pollutants.The results showed that the inorganic priority control pollutants were TH,TDS,Na+,Cl-,SO42-,NO3-,Fe and F.Among them,TH,TDS,Na+,SO42-and Cl-were mainly affected by natural factors related to water-rock interaction,F-and NO3-was mainly derived from agricultural production;Fe was mainly originated from mining and industrial activities.The or-ganic priority control pollutant was 1,2-dichlorobenzene,which was derived from the use of chemical fertilizers and pesti-cides in agricultural production.
groundwaterpriority control of pollutantspollution assessment methodweight analysis methodsource analysis
万方数据
维普
