Studies on Organic Elemental Microanalysis. II

Nitrogen Determination of Refractory Compounds by Modified Micro-Dumas Method

Abstract

It is known that analyses of refractory compounds, such as thiazole and pyrimidine, by the Pregl-Dumas method give values lower than those calculated. It was found that a satisfactory result can be obtained by weighing the sample into a quartz boat, covering the sample with greyish green nickel oxide, in place of the usual copper oxide, and carrying out the burning.