Selective sensing of submicromolar iron(III) with 3,3′,5,5′-tetramethylbenzidine as a chromogenic probe
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- 作者：Lufeng Zhang ; Jianxiu Du ; jxdu@snnu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Iron(III) ; Colorimetry ; 3 ; 3 ; &prime ; 5 ; 5&prime ; -Tetramethylbenzidine ; Milk
- 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
- 出版年：2016
- 出版时间：5 April 2016
- 年：2016
- 卷：158
- 期：Complete
- 页码：24-28
- 全文大小：663 K
文摘
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A colorimetric method was developed for the determination of Fe(III).
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Fe(III) directly oxidized 3,3,′5,5′-tetramethylbenzidine to produce blue solution.
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The method benefited the characteristics of low cost, sensitivity and selectivity.
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As low as 1.0 μmol/L Fe(III) could be perceived by the naked eyes.
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Iron content in milks was successfully determined.