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有机物中碳氢氮(CHN)三元素的定量测定是有机微量分析中的主要分析项目。长期来,碳氢氮的微量分析法一直停留在经典的重量法基础上,六十年代开始,出现了应用气相色谱或热导分析的仪器分析法,近几年来,已逐步过渡到自动化商品仪器,目前国际上仅有美、日等几个国家有较成熟的CHN自动微量分析仪生产。应用自动分析仪微量测定碳氢氮,不仅
The quantitative determination of three elements of organic nitrogen (CHN) is the main analysis item in organic microanalysis. For a long time, the trace analysis method of hydrocarbon has stayed on the basis of the classical gravimetric method. Since the 1960s, an instrumental analysis method using gas chromatography or thermal conductivity analysis has appeared. In recent years, the gradual transition has been made to automated commodity instruments At present, only the United States, Japan and other countries in the world have more mature CHN automatic micro-analyzer production. Application of automatic analyzer trace determination of hydrocarbon nitrogen, not only