還元滴定法による可溶性ケイ酸の定量

概要

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The present study deals with the determination of soluble silica in water by titration method. In the reduction of molybdo-silicic acid, the required amount of reducing agent was spectrophotometrically measured, with the result that the ratio of the reducing agent to silica held a constant value in the reduction with ferrous ion in oxalic acid solution, or with stannous ion in sulfuric acid solution. Another experiment with the same purpose was carried out potentiometrically for the direct reduction titration of molybdo-silicic acid. The result showed that one molecule of molybdo-silicic acid was reduced with four electrons.<BR>Direct reduction titration of molybdo-silicic acid with stannous solution was developed as a new method of determination of soluble silica in water.
社団法人日本分析化学会の論文