高温炉燃烧-红外吸收法测定重铀酸盐中硫质量分数

Determination of Total Sulfur Mass Fraction in Biuranate by High Temperature Furnace Combustion-infrared Absorption Method

建立了高温燃烧红外碳硫仪测定重铀酸盐中硫质量分数的分析方法。样品以五氧化二钒为助熔剂,在高温炉燃烧后,用红外吸收测定重铀酸盐中的硫,样品分析重现性好,精密度高,相对标准偏差为0.26%;样品加标回收率在97.1%~103%之间。

A method of determining total sulfur mass fraction in biuranate by high temperature furnace combustion infrared carbon-sulfur analyzer was established. Vanadium pentoxide in powder was used for flux, after biuranate sample was heated and burned in high temperature furnace, sulfur mass fraction in the sample was determined by infrared absorption method. The results of sample analysis have a good reproducibility. Relative standard deviation is 0. 26 %. The recovery of the method was in the ranges of 97.1%--103 %.