碱分解分光光度法测定连四硫酸盐

DETERMINATION OF TETRATHIONATE BY DECOMPOSITION OF SODIUM HYDROXIDE

采用碱分解法测定连多硫酸盐，用ＮａＯＨ将连多硫酸盐分解为硫代硫酸盐、亚硫酸盐和硫化物，然后加入Ｉ－３离子与其反应，用分光光度法在２６５ｎｍ处测定未反应的Ｉ－３离子量。此方法已应用于实际测试。

A method has been proposed for the detemination of tetrathionate. It is based on the formation of mixture of thiosulfate and sulfite by means of its hydroxide decomposition and then the spectrophotometric measurement of an excess iodine as triodide for the reaction with the thiosulfate and sulfite. The method has been used in practical application.