摘要
为了查明安新县地下水水化学特征以及水质现状,选取45组地下水,采用仪器分析和容量分析相结合的方式进行测定,综合运用描述性数理统计和三元相图,分析安新县地下水的主要离子特征,并运用综合评价法对地下水质量予以评价。结果表明:(1)该区域地下水偏弱碱性,水化学类型主要以HCO3^(-)Na型为主。(2)pH和偏硅酸在空间上变异最低(CV<30%);K^(+)和NO3^(-)的空间变异性最高(CV>100%);其余指标的空间变异中等(CV:30%~100%)。(3)影响本区地下水环境质量的指标主要为TDS、SO4^(2-)、F^(-)和总硬度。(4)水质评价结果显示该区地下水水质总体状况较好,多为Ⅲ类水,研究成果对了解安新县地下水水质现状具有重要意义。
To find out the chemical characteristics of groundwater and the present situation of water quality in Anxin,45 groups of groundwater samples were selected and determined by the method of instrument analysis and volumetric method.The main ionic characteristics of groundwater in Anxin were analyzed by using comprehensive descriptive mathematical statistics and ternary phase diagrams.Groundwater quality was evaluated by comprehensive evaluation method.The results show that:(1)in this area the groundwater is slightly alkaline,hydro-chemical type is mainly HCO_(3)-Na;(2)pH and metasilicate acid have the lowest spatial variation(CV<30%);the spatial variability of potassium and nitrate are the highest(CV>100%);the spatial variation of other indexes are moderate(CV:30%-100%);(3)the main indexes that affecting the quality of groundwater environment are TDS,SO_(4)^(2-),F^(-) and total hardness;(4)the results of water quality evaluation show that the groundwater quality is well,mostly are Ⅲ water.The results are important for understanding the present situation of groundwater quality in Anxin.
作者
贾亮亮
田晓华
刘华杰
Jia Liangliang;Tian Xiaohua;Liu Huajie(The Institute of Hydrology and Engineering Geological Prospecting Hebei Province,Shijiazhuang 050021;College of Life Sciences,Hebei University,Baoding Hebei 071002)
出处
《中国农学通报》
2021年第14期78-83,共6页
Chinese Agricultural Science Bulletin
基金
国家重点研发计划课题“雄安新区地下水环境风险预测预警与防控”(2018YFC0406504)。
关键词
仪器分析
容量分析
变异系数
地下水
水化学特征
水质评价
instrumental analysis
volumetric analysis
coefficient of variation
groundwater
hydro-chemical characteristics
water quality assessment