Risk Identification of Drinking Water Safety in Mountainous Areas by Isotopes and Hydrochemistry
Taking Yuexi Diving basin in Anhui as the study area,the water quality of surface water,groundwater and hot spring were determined.Nitrate,the main over-standard factor causing health prob-lems was detected.The sources and transformation process of nitrate in the study area were analyzed by isotope(N,H,O)and hydrochemistry method,and the contribution rate of each source was quantitatively analyzed by stable isotope mixing model(SIAR).The results showed that fertilizer contributed the most to nitrate(account-ing for 68.7％of the total),followed by atmospheric rainfall(15.1％),livestock manure and sewage contribu-ted slightly low(9.6％),and organic nitrogen in soil contributed the least(6.6％).By means of hydrochemistry and isotope tracer,the main source of nitrate pollution in watershed was accurately traced.
IsotopesNitrateHydrochemistrySIAR modelDrinking water in mountainous area
万方数据
维普
