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Hydrochemistrical Characteristics of Shallow Groundwater & Its Causes Analysis

YE Zhi-qing(Water Power Station in Wood Factory of Jin'an District in Liu'an City Liu'an 237156.Anhui)  
Based on previous studies,130 samples of shallow groundwater are collected from Huainan area,and 21 indexes of the groundwater samples are tested by different instruments and ways.Moreover,the some works have been done,including statistical characteristics of groundwater components,and divided different types of hydrochemistry,analyses of the relationships between the hardness and Ca2+/Na+,Mg2+/Na+,TDS and ES.The correlation between heavy metals and conventional components has been discussed.Finally,affected extent of the quality of shallow groundwater by the method of principal component analysis.
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