| 双波长双指示剂催化动力学光度法测定痕量铁 |
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| 引用本文： | 葛笑兰,谢秀娟,张振新.双波长双指示剂催化动力学光度法测定痕量铁[J].化学研究与应用,2010,22(2). |
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| 作者姓名： | 葛笑兰 谢秀娟 张振新 |
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| 作者单位： | 淮北煤炭师范学院化学系,安徽,淮北,235000 |
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| 基金项目： | 安徽省教育厅自然科学基金项目 |
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| 摘 要： | 铁是人体健康所必须的微量元素,它对人体的生理功能有一定影响.如果体内可利用的铁不能满足血红蛋白正常合成的需要,致使红细胞增殖能力下降,就会造成缺铁性贫血.相反,体内铁含量过高,又易产生癌症~(1]).
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| 关 键 词： | 铁 催化光度法 茜素红 罗丹明B |
Determination of trace iron by dual-wavelength dual-indicator catalytic kinetic spectrophotometric method |
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| GE Xiao-lan,XIE Xiu-juan,ZHANG Zhen-xin.Determination of trace iron by dual-wavelength dual-indicator catalytic kinetic spectrophotometric method[J].Chemical Research and Application,2010,22(2). |
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| Authors: | GE Xiao-lan XIE Xiu-juan ZHANG Zhen-xin |
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| Abstract: | A new catalytic spectrophotometric method for the determination of trace iron was established in this paper.The method was based on the fadiag indication reaction between alizarin red and rhodamine B using hydrogen peroxide as oxidant in sulphuric acid medium.It used iron as catalyst.The 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 wsa 5.04×10~(-11)g/mL.The method has high sensitivity,good selectivity and stability.The operation of the system is simple and its reagents is easy to get.The method has been applied to determination of trace iron(Ⅲ)in tea sample with satisfactory results. |
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| Keywords: | iron catalytic spectrophotometry alizarin red rhodamine B |
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