Quantitative analysis of H-species in anisotropic minerals by polarized infrared spectroscopy along three orthogonal directions
Quantitative analysis of H-species in anisotropic minerals by polarized infrared spectroscopy along three orthogonal directions
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偏振红外光谱沿三个正交方向定量分析各向异性矿物中的 H 物种
DOI：
10.1007/s00410-017-1336-2
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发表时间：
2017-02
影响因子：
3.5
通讯作者：
Yang Xiaozhi
中科院分区：
文献类型：
--
作者：
Shuai Kang;Yang Xiaozhi
红外光谱法是一种探测名义上无水矿物中H-物种的强大技术，并且相当大的努力的一个特定目标是提供一种简单而准确的定量方法。现有的方法，无论是极化或非极化分析，通常是耗时的，或者在某些情况下，受到更大的不确定性比理论上预期的。它示出在这里，用于测量浓度的经验方法，通过确定三个偏振红外光谱沿任何三个相互垂直的方向沿着，是理论上，特别是实验上正确的。理论背景是建立考虑综合吸收，和实验测量的基础上仔细评估的种类和含量的H在一系列的宝石质量的正交，单斜和三斜晶体，包括橄榄石，斜方辉石，单斜辉石，正长石和钠长石（自然和H退火）。结果表明，在任意平面内，两个偏振光谱沿着两个垂直方向的积分吸光度之和为常数，三个偏振光谱沿着任意三个正交方向的积分吸光度之和与沿着主轴方向的积分吸光度之和具有基本相同的精度。它还表明，这种方法工作良好，相对精度在10%以内，即使在一些极端的情况下，样品的吸收带都是强烈的和强烈的各向异性。
Infrared spectroscopy is a powerful technique for probing H-species in nominally anhydrous minerals, and a particular goal of considerable efforts has been providing a simple yet accurate method for the quantification. The available methods, with either polarized or unpolarized analyses, are usually time-consuming or, in some cases, subjected to larger uncertainty than theoretically expected. It is shown here that an empirical approach for measuring the concentration, by determining three polarized infrared spectra along any three mutually perpendicular directions, is theoretically and in particular experimentally correct. The theoretical background is established by considering the integrated absorbance, and the experimental measurements are based on a careful evaluation of the species and content of H in a series of gem-quality orthogonal, monoclinic and triclinic crystals, including olivine, orthopyroxene, clinopyroxene, orthoclase and albite (natural and H-annealed). The results demonstrate that the sum of the integrated absorbance from two polarized spectra along two perpendicular directions in any given plane is a constant, and that the sum of the integrated absorbance from three polarized spectra along any three orthogonal directions is of essentially the same accuracy as that along the principal axes. It is also shown that this method works well, with a relative accuracy within 10%, even at some extreme cases where the sample absorption bands are both intense and strongly anisotropic.
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影响因子：
5.3
作者：
Xiaozhi Yang;D. Liu;Q. Xia
通讯作者：
Xiaozhi Yang;D. Liu;Q. Xia
DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
D. IrrrNcrn;Gnoncr R. RossunN
通讯作者：
D. IrrrNcrn;Gnoncr R. RossunN
橄榄岩饱和条件下氧逸度对橄榄石中OH溶解的影响：1.5-7 GPa、1100-1300 ℃下的实验研究
影响因子：
5
作者：
Yang Xiaozhi
通讯作者：
Yang Xiaozhi
影响因子：
5.8
作者：
Berry, AJ;Hermann, J;Foran, GJ
通讯作者：
Foran, GJ
影响因子：
1.4
作者：
Libowitzky, E;Rossman, GR
通讯作者：
Rossman, GR