中国地质2024，Vol.51Issue(3)：1059-1073,15.DOI:10.12029/gc20230911002
瓯江流域下游温州平原地下水化学演化特征、控制因素及对人体健康的影响
Characteristics,controlling factors and effects on human health of groundwater chemical evolution in Wenzhou Plain,lower Oujiang River catchment
摘要
Abstract
[Objective]The study on the characteristics of groundwater chemical evolution and its control factors in coastal zones is of great significance for the sustainable utilization of groundwater resources in coastal cities.[Methods]On the basis of field investigation and comprehensive analysis of historical data,the characteristics of groundwater chemical evolution in Wenzhou Plain were systematically analyzed by using hydrochemical diagram,ion proportional relationship,multivariate statistical analysis and environmental isotope methods,and the main controlling factors affecting groundwater chemical evolution were discussed.[Results](1)Phreatic water in Wenzhou Plain was dominated by fresh water,and HCO3-,Na+and Ca2+were the predominant ions.However,confined water is brackish and salt water,and Cl-and Na+were absolutely dominant ions.(2)From the mountain front to the marine deposition plain,the transition from low-salinity HCO3 type water to high-salinity Cl type water in the study area is mainly controlled by natural processes,and human activities caused abnormalities of local groundwater chemistry.(3)On the ten-year scale,the content of the main components of phreatic water decreased to a certain extent,and the hydrochemical type evolved in the direction of the decrease of Cl-and the increase of HCO3-.(4)Natural factors such as water-rock interaction,seawater interaction,redox environment and human factors such as industrial and agricultural production and domestic sewage are the main controlling factors of groundwater chemical evolution in Wenzhou Plain.[Conclusions]The results of groundwater health risk assessment show that certain potential non-carcinogenic risks of groundwater exist in the area,the non-carcinogenic risk of phreatic water is less than that of confined water,drinking water intake is the main way to harm human body,and the non-carcinogenic risk of children in the same environment is higher than that of adults.Therefore,it is necessary to conduct long-term monitoring of groundwater with health risks and strengthen groundwater resource management and pollution prevention in such areas.关键词
水化学特征/时空演化/稳定同位素/滨海平原/健康风险/水文地质调查工程Key words
hydrochemical characteristics/spatial-temporal evolution/stable isotope/coastal plain/health risk/hydrogeological survey engineering分类
天文与地球科学引用本文复制引用
张英,刘景涛,周施阳,刘春燕,杨明楠,张玉玺..瓯江流域下游温州平原地下水化学演化特征、控制因素及对人体健康的影响[J].中国地质,2024,51(3):1059-1073,15.基金项目
中国地质调查局项目(DD20230507)资助. Supported by project of China Geological Survey(No.DD20230507). （DD20230507）
