| 微乳液增敏光度法测定面制食品中的铝 |
| |
| 引用本文： | 周菊峰,谢 红,彭爱姣,张 辉.微乳液增敏光度法测定面制食品中的铝[J].食品科学,2010,31(22):407-410. |
| |
| 作者姓名： | 周菊峰 谢 红 彭爱姣 张 辉 |
| |
| 作者单位： | 1.湘南学院化学与生命科学系 2.湘南学院图书馆 |
| |
| 摘 要： | 目的：在微乳液介质中，用分光光度法测定面制食品中铝的含量。方法：样品经智能消解仪消解，在聚乙烯醇、正丁醇、正庚烷和水构成的微乳液中，以乙酸- 乙酸钠为缓冲体系，用铬天青S 作显色剂，其吸光度与铝含量在一定质量浓度范围内呈正比。结果：铝含量在0～6.0μg/25mL 之间线性关系良好，相关系数r=0.9971，回收率在95%～108% 之间。结论：该方法简便、灵敏、稳定，适用于面制食品中铝的测定。
|
| 关 键 词： | 智能消解仪 微乳液 铬天青S 分光光度法 面制食品 铝 |
| 收稿时间： | 2010-02-01 |
Determination of Aluminum in Flour Food by Microemulsion Sensitization-Spectrophotometry |
| |
| ZHOU Ju-feng,XIE Hong,PENG Ai-jiao,ZHANG Hui.Determination of Aluminum in Flour Food by Microemulsion Sensitization-Spectrophotometry[J].Food Science,2010,31(22):407-410. |
| |
| Authors: | ZHOU Ju-feng XIE Hong PENG Ai-jiao ZHANG Hui |
| |
| Affiliation: | 1. Department of Chemistry and Life Sciences, Xiangnan University, Chenzhou 423000, China；
2. Library of Xiangnan University, Chenzhou 423000, China |
| |
| Abstract: | Objective: To determine the content of aluminum in flour with spectrophotometry in microemulsion medium. Methods: Samples were dissolved using an intelligent electronic digestion system in microemulsion medium composed of PVA, n-butanol, n-heptanol and water in acetic acid-sodium acetate buffer system. The chromogenic agent was chrome azurol S (CAS) and the absorbance has a direct proportion to the concentration of aluminum in solution. Results: Standard curve revealed an excellent linearity within the range of 0.0－6.0 μg/25 mL with a correlation coefficient of 0.9971. The recovery rates of spiked samples were 95%－108%. Conclusion: This method is simple, sensitive and stable, and it can be used to determine the content of aluminum in flour. |
| |
| Keywords: | intelligent digestion system microemulsion chrome azurol S spectrophotometry flour products aluminum |
|
| 点击此处可从《食品科学》浏览原始摘要信息 |
|
点击此处可从《食品科学》下载全文 |
