高频炉燃烧-红外吸收法测定重铀酸盐中碳质量分数

Determination of total carbon content in biuranate by high frequency furnace combustion-infrared absorption method

建立了高频红外碳硫仪测定重铀酸盐中碳质量分数的测定分析方法。样品以钨锡粒为助熔剂,在高频炉燃烧后,用红外吸收测定重铀酸盐中碳,通过加入工业纯铁标准物质进行加入回收试验,回收率在94.8%～104.8%之间,方法测定下限为0.001 0%。

A method of determining total carbon content in biuranate by high frequency infrared carbon-sulfur analyzer was established.Using tungsten for flux,after biuranate sample was heated and burned in high frequency induction furnace using tungsten-tin grain for flux,carbon content in the sample was determined by infrared absorption method.The recovery of the method was in the ranges of 94.8%-104.8%,and the low limit of determination was 0.001 0%.