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首页> 外文期刊>Geochemistry: Exploration, Environment, Analysis >Continuous leach inductively coupled plasma mass spectrometry: applications for exploration and environmental geochemistry
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Continuous leach inductively coupled plasma mass spectrometry: applications for exploration and environmental geochemistry

机译：连续浸出电感耦合等离子体质谱法：在勘探和环境地球化学中的应用

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摘要

Continuous leach inductively coupled plasma mass spectrometry (CL-ICP-MS) is a new analytical technique developed to address some of the shortcomings of bulk leach techniques while overcoming the uncertainties associated with interpreting selective extraction data. It provides information on the specific geochemical sites and mineral phases from which elements are being released using real-time data generated by continually analysing progressively reactive solutions from water to 30% nitric acid as they are pumped through a sample directly into a high resolution ICP mass spectrometer. Mineral breakdown reactions can be monitored from the major elements released, thereby eliminating uncertainties related to host phase/trace element associations. By comparing major and minor element release patterns, trace elements can be reliably assigned to host phases. Results from single mineral phases, mixtures of mineral phases, and natural ore samples indicate that the release of elements from specific minerals is not obscured in more complex samples and that reprecipitation and back reactions are not a concern with this method. Scanning electron micrograph (SEM) examination of the reaction products has been used to verify which phases react and to support the CL-ICP-MS data interpretation. Results for natural soil samples indicate that ‘false’ mobile element anomalies can be identified using CL-ICP-MS and underscore the importance of understanding where trace elements reside in samples used for environmental studies or mineral exploration.
机译：连续浸出电感耦合等离子体质谱法（CL-ICP-MS）是一种新的分析技术，旨在解决 的同时又克服了 < / sup>与解释选择性提取 数据相关的不确定性。它提供有关特定地球化学场所 和矿物相的信息，这些元素使用通过不断分析 反应性溶液生成的实时数据从中释放出元素从水到30％的硝酸，方法是将它们通过样品直接泵入高分辨率ICP 质谱仪。可以从释放的主要元素中监测矿物分解反应 ，从而消除与宿主相/痕量元素关联相关的不确定性 。通过比较 主要和次要元素释放模式，可以将 痕量元素可靠地分配给宿主阶段。单一矿物 相，矿物相的混合物以及天然矿石样品 的结果表明，更多矿物中不会掩盖特定矿物 中元素的释放复杂的样品以及再沉淀 和逆反应与该方法无关。反应产物 的扫描 电子显微照片（SEM）检查已用于验证哪些相发生反应并支持 CL-ICP-MS数据解释。天然土壤样品的结果 表明可以使用CL-ICP-MS识别'假'的移动元素异常，并强调理解重要性的重要性 痕量元素存在于用于环境研究或矿物勘探的样品中。

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