FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (4): 310-313.

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Simultaneous Analysis of La, Ce, Pr, Sm and Nd in Tea with ICP-OES

 SHI  Yuan-Zhi, FENG  Qi-Hua, MA  Li-Feng, HAN  Wen-Yan, RUAN  Jian-Yun, WANG  Fang   

  1. 1. Key Laboratory of Tea Chemical Engineering, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences;2. Shaoxin Yuchacun Tea Co. Ltd.
  • Online:2008-04-15 Published:2011-08-24

Abstract: A method is established for five rare earth elements which named La, Ce, Pr, Sm, Nd analysis in tea samples using inductively coupled plasma spectrometry. By the cineration and microwave digestion techniques for pretreatment of samples, tea samples can be analyzed with good accuracy and precision by ICP-OES. The recoveries for green teas and Oolong teas are both within 87% to 103%, and the relative standard deviations (RSD) are no more than 10%.

Key words: La, Ce, Pr, Sm, Nd, tea, ICP-OES