Lunge窒素計法における補正について

概要

論文の詳細を見る
The amounts which are necessary to be corrected in the determination of nitrogen by the Lunge method have been investigated. The loss of nitrogen oxide by its solubility in 8797% sulfuric acid was determined by the titration method and by the colorimetric method. The effect of temperature on the solubility was rather small. In the determination of nitrogen in nitric acid, a correction for dissolved nitrogen oxide gave a result in agreement with that determined by acidimetric method. In this case, the formation of nitrous oxide by side reaction is compensated for by the sulfuric acid remaining adhered to the wall of the burette. However, a nitrocellulose sample yielded carbon monoxide and carbon dioxide by side reaction and gave +0.2% error with the correction for solubility of nitrogen oxide and -0.3% error without the correction. Hence, a proposed correction formula for the amount of gas in the Lunge nitrometer is given.
社団法人日本分析化学会の論文