抄録
The colorimetric determination of nitrogen in steel using Nessler's reagent was studied. The sample was dissolved in acid and oxidized with hydrogen peroxide, iron was precipitated with sodium hydroxide and separated by a centrifugal machine. From this solution the nitrogen was determined colorimetrically using Nessler's reagent. The microquantity of nitrogen in steel below 0.01 percentage can be determined by this method and the time required for this analysis is about 30 minutes, so this method is suited for rapid analysis in the steel plant.
