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矿物中气液包裹体的成份,对查明矿床的成因,了解矿床、岩石形成的条件,以及指导寻找深部隐伏的热液盲矿体具有重要意义。但通常见到的气液包体体积小,含量低,组成复杂,使分析工作困难。Hinze等人曾提出用碘酸钡的置换法借放大反应测定SO_4~(2-)的方法。但未见用于复杂试样的测定。本文在上法的基础上进一步研究了交换介质、测定条件、干扰离子及消除等条件。建立了用于测定包裹体中SO_4~(2-)的分析方案,结果满意。 (一)主要试剂与仪器 1.碘酸钡的制备:称取分析纯硝酸
The composition of gas-liquid inclusions in minerals is of great significance for identifying the genesis of the deposit, understanding the conditions for deposit formation and rock formation, and guiding the search for the deep concealed hydrothermal blind ore bodies. But usually see the gas-liquid inclusions small size, low content, complex composition, making the analysis difficult. Hinze et al. Proposed a method for the determination of SO_4 ~ (2-) by amplification reaction using the substitution method of barium iodate. But not for the determination of complex samples. In this paper, based on the law further study of the exchange medium, the determination of conditions, interference ions and elimination and other conditions. The analytical program for the determination of SO_4 ~ (2-) in inclusions was established and the results were satisfactory. (A) of the main reagents and equipment 1. Preparation of barium iodate: Weigh the analytical grade of nitric acid