岩矿测试

文章摘要

黄圣轩,巫翔,秦善.高温高压下元素配分的原位实验与计算模拟研究进展[J].岩矿测试,2016,35(2):117-126

HUANG Sheng-xuan,WU Xiang,QIN Shan.Research Progress on in situ Experimental and Theoretical Simulations of Element Partitioning under High Temperature and High Pressure[J].Rock and Mineral Analysis,2016,35(2):117-126.DOI:10.15898/j.cnki.11-2131/td.2016.02.002

高温高压下元素配分的原位实验与计算模拟研究进展

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Research Progress on in situ Experimental and Theoretical Simulations of Element Partitioning under High Temperature and High Pressure

投稿时间：2015-12-16 修订日期：2016-03-05

DOI：10.15898/j.cnki.11-2131/td.2016.02.002

中文关键词: 元素配分同步辐射微聚焦X射线荧光光谱金刚石压腔原位分析地球化学模拟

英文关键词: element partitioning Synchrotron Radiation Micro X-ray Fluorescence Spectrometry diamond anvil cell in situ analysis geochemical simulations

基金项目:国家自然科学基金资助项目(U1232204,41473056)

作者	单位	E-mail
黄圣轩	北京大学地球与空间科学学院, 造山带与地壳演化教育部重点实验室, 北京 100871
巫翔	北京大学地球与空间科学学院, 造山带与地壳演化教育部重点实验室, 北京 100871 中国地质大学(武汉), 地质过程与矿产资源国家重点实验室, 湖北武汉 430074	xiang.wu@pku.edu.cn
秦善	北京大学地球与空间科学学院, 造山带与地壳演化教育部重点实验室, 北京 100871

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中文摘要:

地球内部元素的配分行为具有重要意义,有助于揭示地球内部物质循环、元素成矿、超临界流体性质等基础地质问题。同步辐射微聚焦X射线荧光光谱(SR-μXRF)结合金刚石压腔(DAC)技术,可以在高温高压条件下实现高准确度和高分辨率的原位(in situ)测试元素在不同物相间的浓度,并获取配分系数。而基于地球化学热力学的理论计算模拟,可以获得元素在不同物相间的赋存形式,有助于揭示元素配分机制。本文综述了SR-μXRF结合DAC技术和地球化学热力学计算模拟原位测定高温高压下元素配分的研究方法,及其在地球内部元素迁移、成矿作用和地球早期形成过程等领域中的应用进展,认为利用该套方法研究高温高压下元素配分行为的体系将变得更加复杂,对温度、压力条件则要求更高。本文旨在更新和丰富高温高压下元素配分系数数据,深化对地球内部物质循环等问题的认知。

英文摘要:

Knowledge of element partitioning in the Earth's interior is of great importance, as it can contribute to interpret fundamental geological problems, such as element cycling, ore formation, and the property of supercritical fluid. The concentration and partition coefficients of elements under high temperature and high pressure could be in situ extracted by Diamond Anvil Cell (DAC) combined with Synchrotron Radiation Micro X-ray Fluorescence Spectrometry (SR-μXRF) with high accuracy and high resolution. The element's speciation in various phases could be simulated theoretically, based on geochemical thermodynamics, which helps to reveal the mechanism of element partitioning. The in situ detecting methods of element partitioning under high temperature and high pressure by DAC combined with SR-μXRF and geochemical thermodynamics simulation, and their applications on migration of elements in the Earth's interior, ore formation, the early development of Earth's formation and so on, are summarized in this paper. Studying element partitioning behavior under high temperature and high pressure using the proposed method will become more complex, which needs higher requirements for the temperature and pressure conditions. From this paper, the aim is to update and enrich the element partition data under high temperature and high pressure, which will enhance the understanding of material cycling in the Earth's interior.

主管单位：	中国科学技术协会
主办单位：	中国地质学会岩矿测试技术专业委员会国家地质实验测试中心