| 3,4-二羟基苯甲酸的流动注射化学发光抑制分析法 |
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| 引用本文： | 崔华,姜海燕,孟荣,贺彩霞,赵化章.3,4-二羟基苯甲酸的流动注射化学发光抑制分析法[J].光谱学与光谱分析,1999,19(3):377-379. |
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| 作者姓名： | 崔华 姜海燕 孟荣 贺彩霞 赵化章 |
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| 作者单位： | 中国科技大学化学系,230026,合肥 |
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| 基金项目： | 中国科技大学校科研和教改项目 |
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| 摘 要： | 本文基于３，４－二羟基苯甲酸对Ｃｏ２＋离子催化的鲁米诺－Ｈ２Ｏ２化学发光体系的抑制作用，首次建立了３，４－二羟基苯甲酸的流动注射化学发光抑制分析法，发光信号的降低值ΔⅠ与３，４－二羟基苯甲酸的浓度在１×１０－６～１×１０－５ｍｏｌ／Ｌ的范围内呈良好的线性关系，检出限为２．７×１０－７ｍｏｌ／Ｌ（ｎ＝１１），对８×１０－６ｍｏｌ／Ｌ３，４－二羟基苯甲酸测定的相对标准偏差为２．３％（ｎ＝１１）。
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| 关 键 词： | 化学发光抑制作用 鲁米诺 3 4-二羟基苯甲酸 流动注射 |
Flow Injection Analysis of 3,4-Dihydroxybenzoic Acid with Inhibited Chemiluminescent Detection |
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| Hua CUI,Haiyan JIANG,Rong MENG,Caixia HE,Huazhang ZHAO.Flow Injection Analysis of 3,4-Dihydroxybenzoic Acid with Inhibited Chemiluminescent Detection[J].Spectroscopy and Spectral Analysis,1999,19(3):377-379. |
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| Authors: | Hua CUI Haiyan JIANG Rong MENG Caixia HE Huazhang ZHAO |
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| Institution: | Department of Chemistry, University of Science and Technology of China, 230026 Hefei. |
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| Abstract: | It was found that 3,4-dihydroxybenzoic acid (protocatechuric acid) inhibited chemiluminescence of luminol-H2O2 reaction catalyzed by Co2+. On this basis, a flow injection method has been developed for the determination of protocatechuric acid. The method is simple, convenient and sensitive with detection limit of 2.7 x 10(-7) mol/L and is effective to determine protocatechuric acid in the range of 1 x 10(-6)-1 x 10(-5) mol/L. The variation coefficient of eleven determinations for 8 x 10(-6) mol/L protocatechuric acid is 2.3%. |
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| Keywords: | Chemiluminescent inhibition Luminol 3 4 dihydroxybenzoic acid FIA |
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