IR Reflectivity and Volatile Analysis in Natural and Synthetic Glasses

本研究提出开发和校准一种基于红外反射光谱的挥发性分析新方法，该方法只需要单个抛光样品，并且不依赖于测量样品厚度来测定浓度。初步结果表明，该技术适用于玄武岩成分中浓度在~0.1-0.5 wt%以上的CO3和H2O种类，并且在流纹岩中溶解的CO2在500- 2000ppm水平上获得了令人鼓舞的结果。这些基本的光谱研究将应用于几组样品。这些结果将对地球化学和火山学领域的工作人员有用。

9614229 McMillan This research proposes to develop and calibrate a new method of volatile analysis based on infrared reflectance spectroscopy, which will only require singly polished samples, and which does not rely on measurement of sample thickness for concentration determination. Preliminary results show that the technique will work for CO3 and H2O species in the concentration range above ~0.1-0.5 wt% for basaltic compositions, and encouraging results have been obtained for CO2 dissolved in rhyolite at the 500-2000 ppm level. These fundamental spectroscopic studies will be applied to several suites of samples. The results will be useful to workers in the fields of geochemistry and volcanology.