江汉大学学报（自然科学版）2016，Vol.44Issue(1)：48-51,4.DOI:10.16389/j.cnki.cn42-1737/n.2016.01.009
改进邻菲罗啉分光光度法测定络合铁中亚铁含量
An Improved Phenanthroline Spectrophotometric Method for Determination of Ferrous Iron Content in Chelated Iron
摘要
Abstract
An improved phenanthroline spectrophotometric method for the determination of ferrous content in chelated iron was propsed ,aimed at unclear color reaction of standard HJ/T 345—2007. By improving reagent addition sequence and replacing part of water with 20 mL of ethanol ,when pH of the solution was between 3 to 9,o-phenanthroline with chelated ferrous could form a stable orange red complex. The maximum absorption wavelength of the complex was 510 nm. This method can solve the problem of the unobvious color in the detection of the chelated ferrous by the standard HJ/T 345—2007 and the recovery rate of the sample was 98. 0%to 102. 0%.关键词
邻菲罗啉/分光光度法/无水乙醇/络合铁Key words
phenanthroline/spectrophotometric method/ethanol/chelated iron分类
化学化工引用本文复制引用
徐勋达,胡璐,余国贤,路平..改进邻菲罗啉分光光度法测定络合铁中亚铁含量[J].江汉大学学报（自然科学版）,2016,44(1):48-51,4.基金项目
武汉市科技计划项目 （）
