摘要
采用HIR-944B红外碳硫分析仪快速测定碳酸锶中的硫。对测定条件如助熔剂加入量、样品加入方式、参考物质的选择进行了探讨。确定的助熔剂最佳配比为0.5 g纯铁+0.3 g锡粒+1.5 g钨粒。样品平铺于混合助熔剂的中间层,最上部覆盖薄铝片压紧,以有证石灰石为参考物质。该方法测定结果的相对标准偏差为1.85%、2.12%(n=5),加标回收率为96%、98%。
A rapid and sensitive method for determining the content of strontium carbonate using HIR - 944B infrared carbon and sulphur analyzer was described. The analytical conditions such as amount of flux, the added way of sample, reference materials for selecting were discussed. The composition of flux was 0.5 g pure iron ＋ 0.3 g tin pellet ＋ 1.5 g tungsten. The sample was tiled in the mesosphere of blending flux. The thin aluminum sheet was covered tightly on the top. Limestone was used as reference material. The relative standard deviation of the method was 1.85% ,2.12% （n = 5）. The recovery was 96% ,98%.
出处
《化学分析计量》
CAS
2010年第4期38-40,共3页
Chemical Analysis And Meterage
关键词
高频燃烧-红外吸收法
碳酸锶
硫
high frequency combustion- infrared absorption method, strontium carbonate, sulphur
