| 北京平原区第四系含水层中水-岩作用的锶同位素示踪 |
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| 引用本文： | 翟远征,王金生,左锐,滕彦国.北京平原区第四系含水层中水-岩作用的锶同位素示踪[J].科技导报(北京),2011,29(6). |
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| 作者姓名： | 翟远征 王金生 左锐 滕彦国 |
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| 作者单位： | 北京师范大学水科学研究院;地下水污染控制与修复教育部工程研究中心,北京,100875 |
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| 摘 要： | 通过采集北京平原区第四系含水层中地下水.并对水样中的Ca2+、Sr2+和87Sr/86Sr比值等进行分析,结果表明,地下水中的Ca2+和Sr2+主要来源于水-岩相互作用,而与地下水补给源的携带关系不大,两者在地下水中经历了相似的水文地球化学过程,可以用于示踪水-岩相互作用过程;地下水样按Sr2+浓度大小可明显分为两组,其中低浓度组对应于相对较高的87Sr/86Sr比值,高浓度组对应于相对较低的87Sr/86Sr比值;87Sr/86Sr比值较大程度上受控于水-岩相互作用,而与海水和当地大气降水中的值有较大不同;地下水中的Sr2+以碳酸盐岩风化来源为主,显示出明显的年代累积效应.永定河流域地下水中的Sr2+浓度总体高于潮白河流域:87Sr/86Sr比值沿地下水流向总体上呈增大趋势.
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| 关 键 词： | 地下水 水-岩作用 水文地球化学 |
Strontium Isotopic Tracing of Water-Rock Interaction in Quaternary Aquifer in Beijing Plain |
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| ZHAI Yuanzheng,WANG Jinsheng,ZUO Rui,TENG Yanguo.Strontium Isotopic Tracing of Water-Rock Interaction in Quaternary Aquifer in Beijing Plain[J].Science & Technology Review,2011,29(6). |
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| Authors: | ZHAI Yuanzheng WANG Jinsheng ZUO Rui TENG Yanguo |
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| Institution: | ZHAI Yuanzheng,WANG Jinsheng,ZUO Rui,TENG Yanguo College of Water Sciences,Beijing Normal University,Engineering Research Center for Groundwater Pollution Control and Remediation,Ministry of Education of China,Beijing 100875,China |
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| Abstract: | Sampling and analysis for contents of Ca2+,Sr2+ and ratios of 87Sr/86Sr in groundwater were carried out in Quaternary aquifer in Beijing Plain. It is shown that Ca2+ and Sr2+ in groundwater mainly come from water-rock interaction,and are not closely related with the sources of groundwater; they undergo a similar hydrogeological processes,which can be used to trace the water-rock interaction processes; the samples can be divided into two groups according to the concentration of Sr2+; that with a lower concen... |
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| Keywords: | Sr2+ 87Sr/86Sr |
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