峨眉山东麓地区浅层地下水无机络合物研究

STUDY ON INORGANIC COMPLEX COMPOUND IN SHALLOW GROUNDWATER AT THE EASTERN FOOT OF EMEI MOUNTAIN

本文通过对峨眉山东麓地区浅层地下水Ｃａ２＋，Ｍｇ２＋硫酸盐、硫酸盐络合物的计算分析认为：地下水中络合物组分可反映地下水类型及成因，同时可帮助判断地下水的补、径、排条件；平原区络合物的分布表明，其地下水环境已形成了两类次生水化学环境，即溢流区盐分积累环境和污染引起的盐分升高、水质硬化环境；Ｃａ２＋，Ｍｇ２＋各自络合物间具正相关，Ｃａ２＋，Ｍｇ２＋同类络合物分配具典型线性正相关；Ｃａ２＋，Ｍｇ２＋的络合作用可能减小碳酸钙、硫酸钙的沉淀，但不能消除对环境的影响。

The types and geneses of groundwater at the eastern foot of Emei mountain can be determined by analysing carbonate and sulphate complex of Ca2+ and Mg2+.The inorganic complex compound in groundwater can also be used to analyses the conditions of recharge, runoff and discharge of groundwater.According to the distribution of complex compound we found two types of secondary hydrogeochemical environment,i.e.,salt accumulating in free discharge zone and water quality hardening in polluted zone. It is found that there exists positive correlation between Ca2+ complex compound and Mg2+ complex compound,and linear positive correlation between Ca2+ and Mg2+ complex compounds of a same kind.The deposits of calcium carbonate and calcium sulphate may be reduced by complexation but its influence on environment can not be dispelled.