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Element loss to platinum capsules in high-temperature–pressure experiments
American Mineralogist ( IF 3.1 ) Pub Date : 2020-10-01 , DOI: 10.2138/am-2020-7580 Jintuan Wang, Xiaolin Xiong, Le Zhang, Eiichi Takahashi
American Mineralogist ( IF 3.1 ) Pub Date : 2020-10-01 , DOI: 10.2138/am-2020-7580 Jintuan Wang, Xiaolin Xiong, Le Zhang, Eiichi Takahashi
Element partition coefficients play key roles in understanding various geological processes and are typically measured by performing high-temperature–pressure (HTP) experiments. In HTP experiments, samples are usually enclosed in capsules made of noble metals. Previous studies have shown that Fe, Ni, and Cu readily alloy with noble metals, resulting in significant loss of these elements from the experimental samples. The loss of elements could severely undermine phase equilibrium and compromise the validity and accuracy of the obtained partition coefficients. However, it remains unclear if other elements (in addition to Fe, Ni, and Cu) will also be lost from samples during HTP experiments, and how to minimize such losses. We performed a series of experiments at 1 GPa and 1400 °C to investigate which elements will be lost from samples and explore the influence of capsule materials and oxygen fugacity (fO2) on the loss behavior of elements. The starting material is a synthesized basaltic glass consisting of 8 major elements and 37 trace elements. The sample capsules included platinum (Pt), graphite-lined Pt, and rhenium-lined Pt, and the experimental oxygen fugacity (fO2) was buffered from
中文翻译：
高温压力实验中铂金胶囊中的元素损失
元素分配系数在理解各种地质过程中起着关键作用，通常通过进行高温高压（HTP）实验来测量。在HTP实验中，通常将样品封装在由贵金属制成的胶囊中。先前的研究表明，Fe，Ni和Cu容易与贵金属形成合金，导致这些元素从实验样品中大量损失。元素的损失会严重破坏相平衡，并损害所获得分配系数的有效性和准确性。但是，尚不清楚在HTP实验期间是否还会从样品中损失其他元素（除了铁，镍和铜），以及如何最大程度地减少此类损失。我们在1 GPa和1400°C的温度下进行了一系列实验，以研究样品中哪些元素会丢失，并探索胶囊材料和氧逸度（fO2）对元素丢失行为的影响。起始材料是由8种主要元素和37种微量元素组成的合成玄武玻璃。样品胶囊包括铂（Pt），石墨衬里的Pt和rh衬里的Pt，实验氧气逸度（fO2）从
更新日期：2020-10-02
中文翻译：
高温压力实验中铂金胶囊中的元素损失
元素分配系数在理解各种地质过程中起着关键作用，通常通过进行高温高压（HTP）实验来测量。在HTP实验中，通常将样品封装在由贵金属制成的胶囊中。先前的研究表明，Fe，Ni和Cu容易与贵金属形成合金，导致这些元素从实验样品中大量损失。元素的损失会严重破坏相平衡，并损害所获得分配系数的有效性和准确性。但是，尚不清楚在HTP实验期间是否还会从样品中损失其他元素（除了铁，镍和铜），以及如何最大程度地减少此类损失。我们在1 GPa和1400°C的温度下进行了一系列实验，以研究样品中哪些元素会丢失，并探索胶囊材料和氧逸度（fO2）对元素丢失行为的影响。起始材料是由8种主要元素和37种微量元素组成的合成玄武玻璃。样品胶囊包括铂（Pt），石墨衬里的Pt和rh衬里的Pt，实验氧气逸度（fO2）从
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