食品科学 ›› 2009, Vol. 30 ›› Issue (6): 226-228.doi: 10.7506/spkx1002-6630-200906052

• 分析检测 • 上一篇    下一篇

电感耦合等离子发射光谱法测定茶叶中5种稀土元素

霍江莲1,刘孟刚2,楼国柱1   

  1. 1. 北京市食品研究所茶叶质量监督检验站
    2.美国阿美特克有限公司北京代表处
  • 收稿日期:2008-05-08 修回日期:2008-06-30 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 霍江莲 E-mail:jianglian96@163.com

Determination of Five Rare Earth Elements in Tea by Inductive Coupling Plasma-Optical Emission Spectrometry

HUO Jiang-lian1,LIU Meng-gang2,LOU Guo-zhu1   

  1. (1.Tea Quality Supervision and Examination Station of Beijing Food Research Institute, Beijing 100162, China;
    2. Beijing Representative Office, Ametek Inc., Beijing 100004, China)
  • Received:2008-05-08 Revised:2008-06-30 Online:2009-03-15 Published:2010-12-29
  • Contact: HUO Jiang-lian1 E-mail:jianglian96@163.com

摘要:

建立了一种电感耦合等离子体发射光谱仪ICP-OES 检测茶叶中5 种稀土元素的方法,在优化条件下,5 种稀土元素的检出限为1.1~5.1μg/kg ,两种水平的添加回收率为80.3%~98.7%,利用该方法分析了国家一级茶叶标准物质(GBW10016),结果符合证书值要求。

关键词: ICP-OES, 茶叶, 稀土

Abstract:

ICP-OES was sused to establish a analysis method of five rare earth elements, such as La, Ce, Pr, Nd and Sm in tea. nder the optimum conditions, the limits of detection and the spike recoveries of the five rare earth elements at the concentration f 0.4 mg/kg and 2.0 mg/kg are excellent, which are 1.1μg/kg to 5.1μg/kg and 80.3% to 98.7% respectively. The accuracy of this ethod was evaluated using the tea standard reference material GBW10016. The determination results are in the range of certified value.

Key words: ICP-OES, ea, rare earth element

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