酸溶重铬酸钾容量法测定铁含量的分析与探讨

目前,铁含量的测定方法主要采用的是:酸溶或者碱熔分解试样,然后采用二氯化锡和三氯化钛作为还原剂,利用重铬酸钾作为标准溶液滴定测定铁含量的经典方法。本文在传统的重铬酸钾容量法基础之上,加以改进,经过反复多次实验,确定最佳实验反应条件,并对实验结果进行验证分析,确定改进方法的适用范围。

Analysis and Discussion on the determination of iron content by acid soluble potassium dichromate volumetric method

At present,the main methods of determining iron content are:acid dissolution or alkali dissolution of the sample,then using stannic chloride and titanium trichloride as reducing agent,using potassium dichromate as standard solution titration to determine iron content.Based on the traditional capacity method of potassium dichromate,this paper improves it.After repeated experiments,the best reaction conditions are determined,and the experimental results are verified and analyzed to determine the scope of application of the improved method.