云南省普洱市茶叶中重金属及稀土总量分析  

Analysis on Quantity of Heavy Metals and Total Rare Earth Elements in Tea Leaves from Yunnan Pu'er

作　　者：瞿燕[1] 高原[2] 杨婉秋[3] 

机构地区：[1]中国科学院昆明植物研究所,云南昆明650201 [2]宜宾学院化学与化工学院,四川宜宾644000 [3]昆明学院化学科学与技术系,云南昆明650214

出　　处：《昆明学院学报》2015年第6期34-38,共5页Journal of Kunming University

基　　金：云南省科技厅应用基础研究资助项目(2013FZ101)

摘　　要：采用ICP-MS法对云南省普洱市43种茶叶样品中的As,Pb,Cd,Cr,Cu和稀土氧化物总量(REO)进行分析.结果表明,普洱市茶叶质量良好,As,Pb,Cd,Cr,C和REO平均含量均低于国家限量标准,且各样品重金属含量均低于国家标准,部分样品REO含量超标.茶叶中重金属和稀土元素含量差异较大,各元素含量高低顺序为:Cu>REO>Cr>Pb>As>Cd.显著性分析表明,Cr和As含量高低可能受原料茶的成熟度高低影响较大,Cu含量可能受人工发酵工艺的影响较大.相关性分析显示,As,Cr和REO元素之间,Cd和Pb元素之间存在极显著相关.ICP-MS was used for analysis of As,Pb,Cd,Cr,Cu and the total rare earth (REO)in 43 tea samples collected from Pu′er Area.The result showed that compared with the national hygienic standard,although REO in some samples exceeded the limit,tea pro-duced in Pu′er area had good quality as a whole because of lower contents of those elements.There are big difference among those con-tents in samples,and the trends are as follows:Cu >REO >Cr >Pb >As >Cd.Significant analysis showed that the high and low content of Cr and As might be greatly affected by the maturity level of fresh leaves;Cu content might be greatly affected by fermentation process. Correlation analysis showed that there are significant correlations between As,Cr and REO,and between Cd and Pb,too.

关 键 词：普洱市 茶叶 重金属 稀土总量 ICP-MS 

分 类 号：TS272[农业科学—茶叶生产加工] O657.3[轻工技术与工程—农产品加工及贮藏工程]