安全与环境工程2024，Vol.31Issue(5)：170-179,10.DOI:10.13578/j.cnki.issn.1671-1556.20240321
豫东平原浅层地下水水化学特征及成因机制
Hydrochemical characteristics and formation mechanism of shallow groundwater in Eastern Henan Plain
摘要
Abstract
Groundwater is the main water source for industrial and agricultural production as well as residential drinking water in Eastern Henan Plain,which plays an important role in maintaining the development of local ecology and economy.In this paper,74 groups of shallow groundwater samples collected from June to July 2023 were used to analyze the hydrochemical characteristics,influencing factors,formation mechanisms of shal-low groundwater of the study area through hydrochemistry,δD,δ18O isotopes and principal component analy-sis.The results show that the groundwater in Eastern Henan Plain is weakly alkaline,and the main hydrochemi-cal type is HCO3-Na•Ca.Along the groundwater runoff,from the Yellow River and its ancient river bed to-wards downstream areas,the TDS content of groundwater gradually decrease,and the main components affect-ing groundwater quality include fluorine,arsenic,iodine and nitrate.Rock weathering and evaporation are the main factors dominating the hydrochemical composition of groundwater.The weathering hydrolysis of silicate minerals is the main source of soluble salt in groundwater,followed by the hydrolysis of evaporite and cation ex-change and adsorption.In addition,some areas are affected by human activities.The dissolution and precipita-tion of calcium-containing minerals,oxidation/reduction and adsorption/desorption control the release of fluo-rine,arsenic and iodine from groundwater.This study can provide scientific basis for local drinking water safety and regional groundwater management.关键词
地下水/水化学特征/水-岩相互作用/主成分分析/成因机制/豫东平原Key words
groundwater/hydrochemical characteristics/water-rock interaction/principal component analysis/for-mation mechanism/Eastern Henan Plain分类
资源环境引用本文复制引用
刘海风,王梦珠,王现国,苏春利,蒋格,李芷琴,任飞飞..豫东平原浅层地下水水化学特征及成因机制[J].安全与环境工程,2024,31(5):170-179,10.基金项目
河南省自然资源科研项目(豫自然资函[2023]610号-5) （豫自然资函[2023]610号-5）
国家自然科学基金项目(42177078) （42177078）
