茶叶科学Issue(5)：451-457,7.
基于稀土元素含量的普洱茶产地识别研究
The Discrimination of Pu′er Tea According to Region of Origin Using the Content of Heavy Rare-earth Elements
摘要
Abstract
Pattern recognition techniques were studied to classify the Pu′er tea on the basis of their geographical origin. In this experiment, 85 samples of Pu′er tea in three mainly origin regions (Xishuangbanna, Pu′er and Linchang city) were collected as experimental samples. 16 heavy rare-earth elements in Pu′er tea samples were determined by using inductively couple plasma-mass spectrometry (ICP-MS). Principal component analysis (PCA) and discriminant analysis of Wilk’s method were used as classification procedures. The recognition accuracy for the training samples (Pu′er shu tea and Pu′er sheng tea) on three origin regions were all 100%, cross-validating were 100%. The recognition accuracy for the training samples (mixture of Pu′er shu tea and Pu′er sheng tea) on Xishuangbannan, Pu′er and Linchang city set was 93.3%, 87.9%, 90.9 %, respectively; cross-validating were 90%, 87.9%, 90.9%, respectively. The recognition accuracy for the testing 18 samples were 84.6 %、81.4%、82.9%respectively. Those results revealed that it was possible to distinguish three mainly origin regions of Pu′er tea by the contents of heavy rare-earth elements.关键词
稀土元素/普洱茶/产地识别/ICP/MSKey words
heavy rare earth element/Pu′er tea/discrimination of region origin/ICP/MS分类
轻工纺织引用本文复制引用
刘宏程,林昕,和丽忠,兰珊珊,林涛,严红梅,黎其万..基于稀土元素含量的普洱茶产地识别研究[J].茶叶科学,2014,(5):451-457,7.基金项目
公益性（农业）行业专项（S212103046）、云南省中青年学术技术带头人培养计划 （）
