Groundwater environment background value for the plain area of Yili River Valley
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Abstract:
Using the Graphic method, Grubbs test, Shapiro-Wilk method etc, this paper analyzed the hydrochemical characteristics of groundwater and then calculated the environment background values. The results showed that the main cations of the plain area of Yili River were Ca2+ and Mg2+, and the main anion was HCO3-. HCO3-Ca, HCO3-Ca-Mg, and HCO3-SO4-Ca-Mg were the main hydrochemical types of groundwater. The chemical composition of the groundwater in this area was mainly related to leaching effect, cation exchange and adsorption, but also depended on human activities. The study is of great importance to the groundwater environmental impact analysis and prediction, judgment of environmental pollution and quality assessment, reasonable exploitation and utilization of groundwater resources.