双波长分光光度法测定药液中微量铁含量  

Determination of Trace Iron in Solution by Dual Wavelength Spectrophotometry

作　　者：邱小香[1,2] 

机构地区：[1]渭南师范学院化学与生命科学学院,陕西渭南714099 [2]陕西省多河流湿地生态环境重点实验室,陕西渭南714099

出　　处：《河南科学》2015年第2期191-194,共4页Henan Science

基　　金：陕西省自然科学基础研究项目(2013JQ2021);渭南市科技创新扶持资金项目(2012KYJ-3);渭南师范学院特色学科建设项目(14TSXKO4)

摘　　要：探索了双波长分光光度法测定含铁口服液中微量铁含量的方法.实验基于Fe2+和Fe3+与1,10-邻菲罗啉形成有色络合物,在波长420 nm和525 nm处均有不同程度的吸收,且其吸收的程度与Fe2+和Fe3+的含量呈一定的线性关系,据此,在优化实验条件下,运用朗伯-比尔定律计算含铁口服液中的Fe2+、Fe3+的含量.该方法重现性好、准确度高.The paper discussed the method for the determination of trace iron content of iron in oral solution by dual wavelength spectrophotometry. Based on the experiment of Fe^2＋, Fe^3＋ and 1, 10-phenanthroline forming colorful complexes they have different absorption levels at the wavelengths of 420 nm and 525 nm, and the contents of their absorption and the extents of Fe^2＋ and Fe^3＋ showed a linear relationship. Accordingly, under the optimized experimental conditions, the Lambert-Bill＇ s law was method has good reproducibility and high accuracy. used to calculate the Fe^2＋, Fe^3＋ content in iron oral liquid. This

关 键 词：双波长分光光度 含铁口服液 1 10-邻菲罗啉 铁离子 

分 类 号：O657.32[理学—分析化学]