Studies on the Analytical Method by Means of Photoelectric Colorimeter. II : Micro-Colorimetric Determination of Sulfide by Use of P-Phenylenediamine and Dimethyl P-Phenylenediamine
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Blue color is developed when ferric chloride is added to the hydrochloric acid solution of p-phenylenediamine (or dimethyl p-phenylenediamine) saturated with hydrogen sulfide. In the present study, it was attempted to utilize this color reaction for the micro-colorimetric determination of sulfide. It was found that this color reaction was catalyzed by ferric chloride and the color development was proportional to the amount of sulfide. The optimum conditions for the colorimetry were determined. As a result, 4 to 40γ of sulfide per 100 ml of solution were analysed with the reproducibility of 99.4 per cent.
- 東北大学の論文
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