用离子色谱法测定丙烯中痕量碱性氮化物

Determination of Trace Amount of Basic Nitrogen Compounds in Propene by Ion Chromatography

采用化学反应浓缩技术,将丙烯中痕量碱性氮化物转变为水溶性的阳离子,用离子色谱法进行测定。该法准确度高,操作简便,可测定丙烯中 10～(-9)g/L的碱性氮化物,也可用于炼油厂及其它环境气氛中碱性氮化物的测定。

An analytical method was developed for the determination of trace amount of basic nitrogen compounds (ammonia, methylamine, dimethylamine and trimethylamine). The method, chemical reaction concentration technique and highly sensitive ion chromatography, is simple, rapid and without interference. The detection limit is 10-9 g/L. Except for basic nitrogen compounds in propene or other oil gases, the amount of ammonia in air can be also determined.