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微库仑分析是一种新发展起来的电化学分析方法。具有简单、快速、灵敏、准确和容易实现自动化等优点,并能测定多种有机和无机物质,又可以进行常量与痕量分析。近年来,国内外广泛地应用于石油化工、医药卫生和食品检验等部门,但对于金属材料方面的应用,除日本川村等人有过报导外,其他不多,尤其对测定固溶氮的应用国内尚无报导。 本试验是在原“氢中加热提取——靛酚蓝法”(简称靛酚蓝法),提取钢中固溶氮的条件基础上,采用微库仑仪对固溶氮的测定方法和仪器条件进行了探讨和试验。结果表明:微库仑法测定钢中固溶氮是可行的,缩短了分析时间。每个试样约4分钟;
Microcoulomb analysis is a newly developed electrochemical method. It is simple, fast, sensitive, accurate and easy to automate. It can measure a variety of organic and inorganic substances, and can perform constant and trace analysis. In recent years, both at home and abroad are widely used in petrochemical, medical and health and food inspection departments, but for the application of metal materials, except for the reports by Kawamura and others, there are not many other applications, especially for the determination of nitrogen There is no domestic report. This test is based on the original “hydrogen extraction - indophenol blue method” (hereinafter referred to as indophenol blue method), based on the extraction of nitrogen in the steel based on the conditions, the use of micro-coulometer on the determination of nitrogen content and instrument conditions The discussion and experiment. The results show that microcoulomb method is feasible for the determination of solid solution nitrogen in steel, which shortens the analysis time. About 4 minutes for each sample;