鄂城区地下水水化学和氮素时空分布特征  

Spatial-temporal distribution characteristics of groundwater hydrology and nitrogen in Echeng District

作　　者：屈国颖 任宵莹 卢雨岚 张波 QU Guo-ying;REN Xiao-ying;LU Yu-lan;ZHANG Bo(The Fifth Geological Brigade of Hubei Geological Bureau,Ezhou,Hubei 436000)

机构地区：[1]湖北省地质局第五地质大队,湖北鄂州436000

出　　处：《地下水》2025年第1期84-87,共4页Ground water

基　　金：鄂州市地下水资源环境调查与监测项目(EZDXS-2022)。

摘　　要：鄂城区正处于经济快速发展时期,但目前关于地下水氮污染研究相对较少。本文以鄂城区为例,分别在2022年枯水期和丰水期采集地下水样品进行分析测试,以探究其地下水水化学和氮素时空分布特征。结果表明:地下水水化学类型随着时间发生改变,阳离子以Ca^(2+)为主,阴离子以HCO_(3)^(-)为主,不同监测井地下水水化学类型差别较大,水化学类型复杂。鄂城区地下水存在氨氮和硝态氮超标现象,丰水期氨氮浓度较枯水期升高,污染程度加大;硝态氮浓度较枯水期降低,污染程度减弱;亚硝态氮因为不稳定,浓度一直较低,不存在亚硝态氮污染。Echeng District is in a period of rapid economic development,but there are relatively few studies on groundwater nitrogen pollution in Echeng District.In this study,taking Echeng District as an example,groundwater samples were collected during the dry season and the wet season in 2022 to explore the characteristics of groundwater hydrochemistry and nitrogen spatial and temporal distribution.The results showed that the hydrochemical type of groundwater changed with time,the cation was mainly Ca^(2+),and the anion was HCO_(3)^(-),and the hydrochemical type of groundwater in different monitoring wells was quite different,and the hydrochemical type was complex.The concentration of ammonium in the wet season was higher than that in the dry season,and the pollution degree increased.The concentration of nitrate was lower than that in the dry season,and the pollution degree was reduced.Because of its instability,the concentration of nitrite has been low,and there is no nitrite pollution.

关 键 词：地下水 氮素 时空分布 水化学 

分 类 号：P641.12[天文地球—地质矿产勘探] P641.74[天文地球—地质学]