食品与机械2017，Vol.33Issue(10)：74-77,4.DOI:10.13652/j.issn.1003-5788.2017.10.001
同位素比值分析应用于3种茶叶的产地鉴别
Regional discrimination of three kinds of tea by Isotope ratio analysis
摘要
Abstract
The isotope ratio of five kinds of heavy metal elements in tea samples from different areas was measured,and the variance,cluster and discriminant analyses were undertaken using SAS (statistical analysis system) software.The results showed that 206pb/207Pb,66Zn/67Zn,68Zn/67Zn,114Cd/110Cd,112Cd/110Cd,26Mg/25Mg 6 indexes existed significant differences in the three regions (99％ significant level).The cluster analysis results of the six indexes showed that the clustering accuracy of samples form three regions as Guzhang (78.26 ％),Shimen (94.44％) and Anhua (92.10％).The discriminant analysis results showed that the discriminant accuracy of samples form three regions,they were 86.96％,94.44％ and 97.37％ respectively.Moreover,these two methods of identification are consistent with each other.Therefore,the otherness of isotope ratio combined with the cluster and discriminant analyses of SAS software could be used to identify the tea producing areas.关键词
茶叶/同位素/产地鉴别Key words
tea/isotope/regional discrimination引用本文复制引用
张建辉,汪霞丽,胡勇辉,方宣启,戴璇,张丽,刘岚松..同位素比值分析应用于3种茶叶的产地鉴别[J].食品与机械,2017,33(10):74-77,4.基金项目
湖南省食药监局食品药品安全科技项目(编号:湘食药科R201607) （编号:湘食药科R201607）
