氯胺T-四碱催化分光光度法测定卤水中的碘

Spectrophotometric Determination of iodine in brine by chloramine T-four base catalysis

本文用强酸阳离子交换树脂除去盐湖卤水中阳离子干扰,再采用氯胺T-四碱(4,4-四甲基二氨基苯甲烷)催化分光光度法测定卤水中的碘,在酸性介质中,碘离子与四碱和氯胺T氧化反应中的催化作用,生成有色的络和物,以有色络和物的最大吸收值计算结果。操作简单快速,检出限低,灵敏度高,精密度好。

In this paper,we use strong acid cation exchange resin to remove the cationic interference in the brine of Saline Lake,and then use the chloramine T-four base(4,4-four methyl two amino benzyl methane)to catalyze the spectrophotometric determination of iodine in the brine.In the acid medium,the catalytic action of iodide and four alkali and chloramine T oxidation in the acid medium is used to produce colored collaterals.The maximum absorption value of the colored compound is calculated.The operation is simple and fast,the detection limit is low,the sensitivity is high,and the precision is good.