| 微波消解-阻抑动力学光度法测定面食品中的微量铝 |
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| 引用本文： | 柴红梅,张美丽,高楼军,张竹莲,冯彩霞.微波消解-阻抑动力学光度法测定面食品中的微量铝[J].江西师范大学学报(自然科学版),2009,33(3). |
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| 作者姓名： | 柴红梅 张美丽 高楼军 张竹莲 冯彩霞 |
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| 作者单位： | 1. 延安大学,化学与化工学院,陕西,延安,716000
2. 米脂中学,陕西,榆林,718100 |
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| 基金项目： | 延安市科技计划，延安大学创新项目 |
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| 摘 要： | 利用微波消解法前处理样品,在pH=11.39的NH3-NH4Cl缓冲溶液中,在阳离子表面活性剂TPB的存在下,Al3+对KIO4氧化间甲酚紫(m-CP)的褪色反应具有强烈的阻抑作用,据此建立了阻抑动力学光度法测定痕量Al3+的新方法.本方法的线性范围为1～8μg/25 mL,检出限为2.32×10μg/mL,回收率为99.2%～100.8%,可用于测定面食品中的微量Al3+,结果令人满意.
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| 关 键 词： | 微波消解 阻抑 动力学光度法 铝 间甲酚紫 |
Determination of Trace Aluminum in Flour Products by Microwave Digestion-Inhibition Kinetic Spectrophotometry |
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| CHAI Hong-mei,ZHANG Mei-li,GAO Lou-jun,ZHANG Zhu-lian,FENG Cai-xia.Determination of Trace Aluminum in Flour Products by Microwave Digestion-Inhibition Kinetic Spectrophotometry[J].Journal of Jiangxi Normal University (Natural Sciences Edition),2009,33(3). |
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| Authors: | CHAI Hong-mei ZHANG Mei-li GAO Lou-jun ZHANG Zhu-lian FENG Cai-xia |
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| Institution: | 1.College of Chemistry and Chemical Engineering;Yanan University;Yanan 716000;China;2.The Middle School of Mizhi;Yulin Shanxi 718100;China |
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| Abstract: | Flour products are digested in the sealed container by the microwave digestion system.A simple and sensitive inhibition kinetic spetrophotometric method for determination of trace aluminum has been developed in NH3-NH4Cl(pH=9.50) buffer solution.The method is based on the inhibiting effect of aluminum on the oxidation of m-CP by KIO4.Various surfactants have been studied as enhancing agents in the system.It was found that the cationic surfactant of Tetradecyl Pyridinium Bromide(TPB) could improve the sensit... |
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| Keywords: | microwave digestion inhibition kinetic spectrophotometry aluminum m-CP |
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