食品科学 ›› 2008, Vol. 29 ›› Issue (3): 409-411.

• 分析检测 • 上一篇    下一篇

微波消解-电感耦合等离子体原子发射光谱法测定食品中的钛

 罗海英, 郭新东, 叶嘉荣, 杜志峰, 吴玉銮, 王永华   

  1. 国家加工食品质量监督检验中心; 华南理工大学轻工与食品学院 广东广州510110; 广东广州510110; 广东广州510640;
  • 出版日期:2008-03-15 发布日期:2011-08-24

Determination of Titanium in Foods by Microwave Digestion ICP-AES

 LUO  Hai-Ying, GUO  Xin-Dong, YE  Jia-Rong, DU  Zhi-Feng, WU  Yu-Luan, WANG  Yong-Hua   

  1. 1.National Centre for Quality Supervision and Testing of Processed Food, Guangzhou 510100, China; 2.College of Light Industry and Food Engineering, South China University of Technology, Guangzhou 510640, China
  • Online:2008-03-15 Published:2011-08-24

摘要: 本研究建立了微波消解样品,电感耦合等离子体原子发射光谱法测定食品中钛含量的方法。采用HNO3+H2SO4+H2O(3/2/3,V/V/V)作为微波消解的酸体系,并采用程序升温控制溶样。在选定的实验条件下,本方法的最低检出限为0.2mg/kg,相对标准偏差为1.4%~4.2%,回收率为95.6%~104.9%,在0.002~2.0μg/ml范围内呈良好的线性关系(r=0.9997)。

关键词: 微波消解, 电感耦合等离子体原子发射光谱, 钛, 食品

Abstract: A sensitive and rapid method was established to determine titanium in foods by microwave digestion(MD)-inductively coupled plasma atomic emission spectrometric (ICP-AES). In the microwave digestion system, HNO3+H2SO4+H2O(3/2/3, V/V/V)was used as the composition of acids, and programming temperature controlling was employed. Method detection limit, average recovery and RSD were 0.1 mg/kg, 95.6%~104.9%, and1.4%~ 4.2% respectively under selected condition. The results showed that the method is simple, rapid, less environment contamination. It is of great suitable for determination of titanium in foods.

Key words: microwave digestion, ICP-AES, titanium, foods