摘要
利用燃烧-色谱法测定催化剂上碳含量采用外标法定量时,需要确定一种标准物作为定量的基础。在自主开发的燃烧-色谱高温定碳仪上,详细研究了草酸、碳酸钙和碱式碳酸镁3种物质的分解温度,根据3种物质的定碳常数测定了同一催化剂上的碳含量,并与化学法的测定结果进行了比较。结果表明,碳酸钙是测定催化剂上碳含量最合适的标准物质。
It is need standard material to determing carbon content of catalyst by burning - chromatography with external standard calibration. The decomposition temperature of oxalic acid, calcium carbonate and basic magnesium carbonate were studied with high temperature carbometer based on burning - chromatography. Carbon content of one catalyst was measured according to different carbon - determination constants and the result was compared with that measured by chemical method. It showed that calcium carbonate was the most suitable standard material for measuring carbon content of catalyst by burning - chromatography.
出处
《化学分析计量》
CAS
2011年第4期13-15,共3页
Chemical Analysis And Meterage
关键词
定碳常数
碳含量
碳酸钙
carbon- determination constant, carbon content, calcium carbonate
