Abstract

This paper presents results of a physicochemical study of the preparation of extrapure-grade (99.998%-pure) cesium iodide from a technically pure product obtained by reacting cesium carbonate and hydriodic acid. The synthesized CsI was purified in two steps, involving vacuum drying and high-temperature distillation. We calculated kinetic constants of vacuum drying and evaluated water content as a function of temperature. The final step in removing regulated impurities from CsI was high-temperature distillation. Metallic impurities in the samples thus prepared were determined using inductively coupled plasma mass spectrometry and X-ray diffraction. The results are presented for the first time.

中文翻译：

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超纯碘化铯的制备

摘要

本文介绍了从碳酸铯与氢碘酸反应制得的技术纯品中制备超纯级（99.988％）纯碘化铯的理化研究结果。合成的CsI分两步纯化，包括真空干燥和高温蒸馏。我们计算了真空干燥的动力学常数，并评估了水含量与温度的关系。从CsI中除去调节杂质的最后一步是高温蒸馏。使用电感耦合等离子体质谱法和X射线衍射法测定由此制备的样品中的金属杂质。结果首次显示。