摘要
以兰州市地下水样宏量化学组分测试结果为依据,采用统计分析和对比分析方法,研究了兰州市区地下水矿化度的分布及其成因。结果表明:现状条件下研究区地下水矿化度(TDS)普遍偏高,变化范围在340至18300mg/L之间,平均值为2212mg/L。广泛分布的第三系地层是地下水盐分的重要来源,开采引起的地下水位下降是引起市区水源地地下水矿化度升高的重要驱动因素,工业污染是引起地下水矿化度升高的潜在因素。
The main chemical composition of the groundwater in Lanzhou was investigated.According to the analysis results of 40 samples collected from Lanzhou city area,the total dissolved solid（TDS） is universally high than drinking water standard,and the fresh water only distributed along the Yellow River.Among the 40 samples collected,the TDS is among 340 and 18300 mg/L,with average value of 2212 mg/L,and over 52.5% of the samples have TDS higher than 1000mg/L.The occurrence and distribution of high TDS groundwater have close relationship with the distribution of Tertiary strata,change of groundwater level by pumping is the driving factor of TDS rise,pollution is another factor caused the rise of TDS.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2013年第7期23-27,共5页
Journal of Arid Land Resources and Environment
基金
中国地质调查局地质调查项目:西北地区主要城市地下水污染调查评价项目(1212011121165)资助
