中国岩溶2017，Vol.36Issue(5)：697-703,7.DOI:10.11932/karst2017y61
重庆市南川区南部岩溶地下水水文地球化学特征
Hydrogeochemical characteristics of karst groundwater in southern Nanchuan district of Chongqing
摘要
Abstract
This work focused on the karst groundwater in southern Nanchuan District of Chongqing city.We have analyzed hydrochemical components and trace heavy metals in 149 pieces of samples.The results indi-cate that the hydrochemical types of groundwater are dominated by HCO 3 - Ca · Mg ,HCO 3 - Ca and HCO 3 ·SO 4 -Ca.Most major chemical components of groundwater are Ca2 + ,Mg2 + ,HCO -3 and SO 2 -4 ,which show the corresponding relation with the water-bearing rock groups,i.e.carbonate karst water > carbonate rock and clastic rock water > clastic rock water.The ratio of Mg2 +/Ca2 + in underground water shows that the co-dissolution of calcium carbonate and dolomite is dominant in the groundwater runoff process.The con-tent of trace heavy metals is generally on the low side in groundwater.Most of the water quality is within the category III of water standard,only a few contaminated spots lead to some heavy metals on the high side.关键词
水化学/微量重金属/岩溶地下水/重庆市南川区Key words
hydrochemical characteristics/trace heavy metal/karst groundwater/Nanchuan district of Chongqing分类
天文与地球科学引用本文复制引用
樊连杰,裴建国,邹胜章,杜毓超,卢丽..重庆市南川区南部岩溶地下水水文地球化学特征[J].中国岩溶,2017,36(5):697-703,7.基金项目
国家重点研发计划项目(2017YFC0406104) （2017YFC0406104）
中国地质科学院岩溶地质研究所基本科研业务费项目(2014023) （2014023）
中国地质调查局地质调查项目(DD20160302)和国家自然科学基金项目(41602277)联合资助 （DD20160302）
