食品科学 ›› 2007, Vol. 28 ›› Issue (10): 440-442.

• 分析检测 • 上一篇    下一篇

微波消解-原子吸收法测定酥油粉中微量元素

 石燕, 郑为完, 熊华   

  1. 南昌大学食品科学教育部重点实验室; 南昌大学食品科学教育部重点实验室 江西南昌330047; 江西南昌330047;
  • 出版日期:2007-10-15 发布日期:2011-11-22

Determination of Trace Elements of Ghee Power by Microwave Digestion-atomic Absorption Spectrometry

 SHI  Yan, ZHENG  Wei-Wan, XIONG  Hua   

  1. Key Laboratrory of Food Science, Ministry of Education, Nanchang University, Nanchang 330047, China
  • Online:2007-10-15 Published:2011-11-22

摘要: 本研究以消化温度、消化时间和消化压力为三个考察因素设计正交试验,对实验室自制微胶囊酥油粉进行微波消化。用火焰原子吸收光谱法对样品中的Ca、Mg、Fe、Cu、Zn五种元素进行测定。结果表明,最佳消化条件为:消化温度200℃,消化时间5min,消化压力15atm。在最佳实验条件下,对酥油粉各元素的含量做了回收实验,回收率范围在94.1%~105.1%,相对标准偏差0.41%~3.78%(n=6)。

关键词: 微波消解, 正交试验, 原子吸收光谱法, 酥油粉, 微量元素

Abstract: In this research, orthogonal design test was planed with cinefaction temperature, cinefaction time and cinefaction pressure. Ghee power was digested by microwave digestion method. The contents of elements Ca, Mg, Fe, Cu and Zn were determined by flame atomic absorption spectrometry. The best conditions for the digestion were gain as following temperature 200 ℃, pressure 15 atm and cinefaction for 5 minutes. Meanwhile, on the best experimental conditions, the recovery of the method was in range of 94.1%~105.1%, and relative standard deviation was in range of 0.41%~3.78% (n=6).

Key words: microwave digestion, orthogonal test, atomic absorption spectrometry, ghee power, trace element