利用可见分光光度法测定微量铁含量需要用到邻二氮菲作为显色剂,可该显色剂存在水溶性差、影响测定结果的缺陷。选用硫氧酸钾、盐酸羟胺等5种显色剂进行吸收光谱分析,同时进行反应时间对吸光度的影响、分析工作曲线等研究,可以得出采用亚铁氰化钾为最佳显示剂等结论。 The use of visible spectrophotometric determination of trace iron content need to use phenanthroline as a developer, but the developer has poor water solubility, the determination of the defect. The use of potassium oxalate, hydroxylamine hydrochloride and other five kinds of reagent for absorption spectroscopy analysis, while the reaction time on the absorbance, analysis of the work curve and other conclusions can be drawn using potassium ferrocyanide as the best display agent and other conclusions .