| 化学发光法检测苹果汁中的对羟基苯甲酸 |
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| 引用本文： | 张群林,Aung Myint,刘丽娟,崔华.化学发光法检测苹果汁中的对羟基苯甲酸[J].中国科学技术大学学报,2006,36(4):426-431. |
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| 作者姓名： | 张群林 Aung Myint 刘丽娟 崔华 |
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| 作者单位： | 中国科学技术大学化学系,安徽,合肥,230026 |
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| 基金项目： | Supported by the Overseas Outstanding Young Scientist Program of China Academy of Sciences. |
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| 摘 要： | 在硫酸介质中,对羟基苯甲酸对铈(Ⅳ)-罗丹明6G的化学发光反应有较强的增敏作用,据此建立了测定对羟基苯甲酸的反相高效液相色谱-化学发光新方法.该方法测定对羟基苯甲酸的检出限为3.1×10-10g/mL,方法的线性范围为2.0×10-9～5.0×10-7g/mL,对于1.0×10-8g/mL对羟基苯甲酸11次平行测定的相对标准偏差为1.42%.该方法灵敏度高、线性范围宽,已成功地应用于苹果汁样品中对羟基苯甲酸的含量分析.
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| 关 键 词： | 高效液相色谱 流动注射 化学发光 铈(Ⅳ) 罗丹明6G 对羟基苯甲酸 cerium(Ⅳ) |
| 文章编号： | 0253-2778(2006)04-0426-06 |
| 收稿时间： | 09 7 2004 12:00AM |
| 修稿时间： | 07 1 2005 12:00AM |
Chemiluminescent detection of p-hydroxybenzoic acid in apple juice |
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| ZHANG Qun-lin,Aung Myint,LIU Li-juan,CUI Hua.Chemiluminescent detection of p-hydroxybenzoic acid in apple juice[J].Journal of University of Science and Technology of China,2006,36(4):426-431. |
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| Authors: | ZHANG Qun-lin Aung Myint LIU Li-juan CUI Hua |
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| Abstract: | A novel method by reversed-phase high-performance liquid chromatography with chemiluminescence detection for the determination of p-hydroxybenzoic acid was developed. The procedure was based on the enhancement by p-hydroxybenzoic acid of cerium( Ⅳ )-rhodamine 6G chemiluminescence in sulfuric acid medium. It allows for the detection of p-hydroxybenzoic acid in the concentration range 2.0 × 10-9 ～ 5.0 × 10-7 g/mL with a detection limit of 3. 1 × 10-10g/mL. The relative standard deviation is 1. 42% (n=11) for 1. 0× 10-8 g/mL p-hydroxybenzoic acid solution. The method has the merits of high selectivity, sensitivity and wide linear range,and has been successfully applied to the determination of p-hydroxybenzoic acid in apple juice. |
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| Keywords: | high-performance liquid chromatography flow injection chemiluminescence rhodamine 6G p-hydroxybenzoic acid |
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