Study on Water‐Rock Interactions of Trace Elements in Groundwater with Leaching Experiments
Study on Water‐Rock Interactions of Trace Elements in Groundwater with Leaching Experiments
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DOI：
10.1111/gwat.12182
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发表时间：
2015-04
期刊：
影响因子：
2.6
通讯作者：
Z. Yu;L. Zhang;P. Jiang;C. Papelis;Y. Li
中科院分区：
文献类型：
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作者：
Z. Yu;L. Zhang;P. Jiang;C. Papelis;Y. Li
从寄主岩石中浸出的微量元素的测量可以指示流动地下水的来源，并提供寄主岩石的指纹信息，这可能有助于了解不同地下水和流动路径的混合模式。在这项研究中，三个广泛分布在南内华达州含水层寄主岩石的浸出特性进行了研究，通过在不同的实验条件下（浸出时间，pH值，粒度和岩石矿物学）的13种微量元素的浸出实验。计算了不同含水层寄主岩石中浸出微量元素的分数，以考察不同条件下的水-岩相互作用。研究了围岩矿物学特征对渗滤液成分的影响，为地下水水源地的确定提供了有用的信息。利用地球化学模拟方法模拟了土壤中溶质的形态分布和饱和指数，以进一步探讨土壤中微量元素的再分布和淋溶过程。
Measurements of trace elements leached from host rocks can indicate the source of flowing groundwater and provide the host rock's fingerprint information that may be useful in understanding the mixing patterns of different groundwaters and flowpaths. In this study, the leaching characteristics of three widely‐distributed aquifer host rocks in Southern Nevada were investigated through leaching experiments of 13 trace elements under different experimental conditions (leaching time, pH, grain size, and rock mineralogy). The fraction of leached trace elements from different aquifer host rocks was calculated for examining the water‐rock interaction in different conditions. The effect of host rock mineralogy on leachate composition was examined, which could provide useful information about groundwater source. Solute speciation and saturation indices were simulated using geochemical modeling to further explore the redistribution and leaching process of trace elements.