食品科学 ›› 2007, Vol. 28 ›› Issue (7): 450-452.

• 分析检测 • 上一篇    下一篇

流动注射-光度微传感器快速测定食品中甲醛

 栾崇林, 代建国   

  1. 深圳职业技术学院应用化学与生物技术学院; 深圳职业技术学院应用化学与生物技术学院 广东深圳518055; 广东深圳518055;
  • 出版日期:2007-07-15 发布日期:2011-10-24

Rapid Determination of Formaldehyde in Food by Flow Injection-spectrometric Micro-sensor

 LUAN  Chong-Lin, DAI  Jian-Guo   

  1. School of Applied Chemistry and Biological Technique, Shenzhen Polytechnic, Shenzhen 518055, China
  • Online:2007-07-15 Published:2011-10-24

摘要: 将流动注射装置与光度微传感器耦合,形成连续自动光度分析系统,以甲醛-间苯三酚为反应体系,对反应条件及流动注射各实验参数进行了优化,建立了快速测定食品中甲醛的新方法。该法的线性范围为1.00~20.0μg/ml,检出限为0.10μg/ml,用于食品样品中甲醛的测定,测定结果的相对标准差不大于8.6%,加标回收率在90.6%~107%之间,每小时可测定90个样品。

关键词: 甲醛, 流动注射, 光度微传感器

Abstract:  A analytical system of continuous and automatic spectrometer was formed in conjunction of flow injection setup with spectrometric micro-sensor. A new rapid spectrometric method was developed for determination of formaldehyde in food with presented instrument, which was based on the reactive system of formaldehyde-phloroglucinol. The reaction condition and analytical parameters of flow injection were optimized. The linear range of determination of formaldehyde was 1.00~20.0 μg/ml and the detection limit was 0.10 μg/ml. This method was applied to determination of formaldehyde in food samples. The relative standard deviations of results were less than 8.6% and the spiked recovery was between 90.6% and 107%. The sampling frequency was 90 per hour.

Key words:  , formaldehyde; flow injection; spectrometric micro-sensor;