Abstract
The authors studied the method of determination of NH3 distilledby the apparatus shown in the previous paper. It was very difficult to titrate a very dilute sulfuric acid with n/100 NaOH.In order to obtain a sharp end point, a number of indicators and the applieation of photometric titration were studied (Journ. Chem. Ind., Japan 38, 1934, 1924). The results of analysis of iron and steel and also the nitrogen content of reagents were shown in the Japanese text. (Cf. Institute of Techno-Analytieal Chemistry, Faculty of Engineering, Tokyo Imperial University.)
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