双波长双指示剂催化动力学光度法测定痕量铁

作     者：葛笑兰 谢秀娟 张振新 GE Xiao-lan;XIE Xiu-juan;ZHANG Zhen-xin

作者机构：淮北煤炭师范学院化学系安徽淮北235000 

出 版 物：《化学研究与应用》 (Chemical Research and Application)

年 卷 期：2010年第22卷第2期

页      面：191-193页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：安徽省教育厅自然科学基金项目(2006KJ163C) 

主　　题：铁 催化光度法 茜素红 罗丹明B 

摘      要：A new catalytic spectrophotometric method for the determination of trace iron was established in this *** method was based on the fading indication reaction between alizarin red and rhodamine B using hydrogen peroxide as oxidant in sulphuric acid *** used iron as *** maximum absorption peak was at 430nm and 560nm,the linear range of the determination was 0.02～0.2 μg /mL and 0.2～0.32 μg/mL,the detection limit for iron was 5.04×10-11 g/*** method has high sensitivity,good selectivity and *** operation of the system is simple and its reagents is easy to *** method has been applied to determination of trace iron(Ⅲ)in tea sample with satisfactory results.