摘要
甘肃省天水市区的浅层地下中存在硫酸根离子含量超标的问题,但相关研究成果较为匮乏。本研究利用2019-2021年26个地下水采样井水质数据,对比分析了天水市区的秦州城区、麦积城区的浅层地下中硫酸根离子含量的时空变化趋势,并对超标原因进行了分析。结果表明:硫酸根离子含量年际变化趋势总体为稳定型。硫酸根离子含量高低具有明显的空间分布规律性,东部的麦积城区普遍高于西部的秦州城区,麦积城区的南北两岸黄土丘陵山前区普遍高于中部河谷区。造成硫酸根离子含量超标的主要原因为区域地层中富含硫酸盐类矿物的溶解,其次可能与零星点状的人类活动污染有关。研究成果可为当地地下水污染防治提供科学依据。
The content of sulfate ion exceeds the standard in shallow underground in Tianshui City of Gansu Province,but the relevant research results are scarce.Based on the water quality data of 26 groundwater sampling wells from 2019 to 2021,this study compares and analyzes the temporal and spatial variation trend of sulfate ion content in shallow groundwater in the Qinzhou and Maiji urban areas of Tianshui City,and analyzes the causes of exceeding the standard.The results show that the interannual variation trend of sulfate ion content is generally stable.Sulfate ion content has obvious spatial distribution regularity.Maiji urban area in the East is generally higher than Qinzhou urban area in the west,and the loess hilly piedmont areas on North and South of Maiji urban area is generally higher than that in the middle valley area.The main reason for the excessive sulfate ion content is the dissolution of sulfate-rich minerals in the regional strata,and the second may be related to the sporadic point pollution caused by human activities.The research results can provide a scientific basis for the prevention and control of local groundwater pollution.
作者
王潇
刘德玉
汤超
马宝强
WANG Xiao;LIU De-yu;TANG Chao;MA Bao-qiang(Gansu Academy of Eco-environmental Sciences,Lanzhou 730000,Gansu;Gansu Institute of Geological Environ-ment Monitoring,Lanzhou 730050,Gansu)
出处
《地下水》
2022年第5期69-71,共3页
Ground water
基金
甘肃省水污染防治行动计划地下水考核项目(ZX20190003)。
关键词
天水市
地下水
硫酸根离子
变化趋势
超标成因
Tianshui City
groundwater
Sulfate ion
variation trend
exceeding the standard
