现代地质Issue(4)：958-966,9.
广西红水河中下游澄江地区地下水地球化学特征
Geochemical Characteristics of Groundwater in Chengjiang Area of the Hongshui River in Guangxi
摘要
Abstract
Based on the groundwater data obtained from the karst groundwater pollution investigation and eva-luation in Southwest China,geochemical characteristics of 30 elements or indicators on 26 karst groundwater samples which have been analyzed and tested are studied in this paper.The type of hydrochemical compo-nent,characteristics of ion contents relativity,distribution characteristics and influence factor are described. Results indicate that the hydrochemical type of karst groundwater is Ca-HCO3 or Ca·Mg-HCO3;the back-ground values of the items are lower than the values of grade Ⅲ of the National Water Standard.The results show that only several indicators (such as Zn,Se and Hg ) in karst groundwater of the study area have changed significantly and are unevenly distributed. Other indicators have changed insignificantly and are evenly distributed in groundwater.All the elements have no correlation with pH,while there is clear positive correlation among HCO3-,Ca2+,Mg2+,K+,Na+,SO2-4 ,NO3-,I -,total hardness.HCO3-,Ca2+and Mg2+play a decisive part on the elemental relationship.The spatial distribution of elements assumes sheet dis-tribution characteristics,which is controlled by the geologic background,geographic condition and human activities.关键词
地球化学特征/地下水/广西澄江地区Key words
geochemical characteristic/groundwater/Chengjiang area in Guangxi分类
天文与地球科学引用本文复制引用
樊连杰,裴建国,杜毓超,卢丽,林永生..广西红水河中下游澄江地区地下水地球化学特征[J].现代地质,2015,(4):958-966,9.基金项目
中国地质调查局地质调查项目（1212011121164）；中国地质科学院岩溶地质研究所基本科研业务费项目（2014023）。 （）
