六盘山地区泉水地球化学特征
发布时间：2018-10-12 09:32
【摘要】：根据六盘山地区泉水的化学组成和氢、氧同位素数据,讨论了该区地下水的化学类型、成因及其动态变化特征。2012年11月和2014年7月在六盘山地区采集10处泉水样品,氢氧同位素由液态水同位素分析仪测定,离子组分浓度由离子色谱和化学滴定法测定。水样的TDS范围为218~27 508 mg/L,δ~(18) O和δD值分别为-12.0‰~-8.5‰,-88.5‰~-61.3‰。δ~(18) O和δD指示该区泉水来源于大气降水,并受水循环条件及水岩反应程度的影响。根据舒卡列夫分类法,所采水样可划分为10种水化学类型,受含水层岩性控制,宁南地区的水化类型主要为SO_4-Na型,渭北西部地区的水化类型主要为HCO_3-Ca·Mg型。两次所采水样的离子浓度显示多数水样点的HCO_3~-具有夏高冬低的季节性变化特征,千川村(QC)、双井村(SJ)等因含水层赋存环境较封闭,受降水干扰小;硝口村(XKH)泉水的离子毫克当量比值变幅最大,说明该泉点水岩反应程度变化较大,易受断层带活动的影响。研究结果确定了六盘山地区水文地球化学背景和水的来源,为该区流体地球化学地震监测、预测提供了背景资料。
[Abstract]:Based on the chemical composition and hydrogen and oxygen isotopic data of spring water in Liupanshan area, the chemical types, origin and dynamic variation characteristics of groundwater in this area are discussed. Ten spring water samples were collected in November 2012 and July 2014 in Liupanshan area. Hydrogen and oxygen isotopes were measured by liquid water isotopic analyzer and ion component concentrations were determined by ion chromatography and chemical titration. The TDS range of water samples is 2188508 mg/L, 未 ~ (18) O and 未 D values are -12.0 鈥，
本文编号：2265632
[Abstract]:Based on the chemical composition and hydrogen and oxygen isotopic data of spring water in Liupanshan area, the chemical types, origin and dynamic variation characteristics of groundwater in this area are discussed. Ten spring water samples were collected in November 2012 and July 2014 in Liupanshan area. Hydrogen and oxygen isotopes were measured by liquid water isotopic analyzer and ion component concentrations were determined by ion chromatography and chemical titration. The TDS range of water samples is 2188508 mg/L, 未 ~ (18) O and 未 D values are -12.0 鈥，
本文编号：2265632
本文链接：https://www.wllwen.com/kejilunwen/diqiudizhi/2265632.html
