摘要
采用ICP-MS法对产自云南西部保山、大理、临沧和德宏4个地区的普洱生茶及其茶汤中Al，As，Ba， Cd，Co，Cr，Cu，Fe，Mn，Ni，Pb，Sr，Ti，V和Zn这15种金属元素含量进行分析，研究不同产区普洱生茶金属元素浸出特征。结果表明，不同产区普洱生茶样品中各元素含量差异明显，含量高低顺序为：w（Mn）＞w（Al）＞w（Fe）＞w（Zn）＞w（Ba）＞w（Cu）＞w（Sr）＞w（Ti）＞w（Ni）＞w（Pb）＞w（Cr）＞w（As）＞w（V）＞w（Co）＞w（Cd）；茶汤中各元素含量高低顺序为：w（Mn）＞w（Al）＞w（Zn）＞w（Cu）＞w（Fe）＞w（Ni）＞w（Ba）＞w（Sr）＞w（Cr）＞w（As）＞w（Co）＞w（Pb）＞w（Ti）＞w（V）＞w（Cd），金属元素溶出难易程度与其含量之间无正相关关系，其中Ni和Zn较易溶出，Ba，Fe和Sr较难溶出，Ti，V和Cd基本不溶出。
Abstract
ICP-MS was used to analyze the content of 15 metal elements (Cd,Co,Cr,Cu,Fe,Mn,Ni,Pb,Cd,Pb,Sr,Ti,V and Zn)in Pu-er raw tea and their infusion from producing areas of Baoshang,Dali,Linchan and Dehong in the west of Yunnan to study the leaching characteristics of metal elements.The results showed that there were significant differences in the contents of the elements in the samples from the different areas,and the order of content was as follows:w(Mn)>w(Al)>w(Fe)>w(Zn)>w(Ba)>w(Cu)>w(Sr)>w(Ti)>w(Ni)>w(Pb)>w(Cr)>w(As)>w(V)>w(Co)>w(Cd).The order of each element content in infusions was w(Mn)>w(Al)>w(Zn)>w(Cu)>w(Fe)>w(Ni)>w(Ba)>w(Sr)>w(Cr)>w(As)>w(Co)>w(Pb)>w(Ti)>w(V)>w(Cd).There was no positive correlation between the dissolution degree of metal element and its content.Ba,Fe and Sr were more dif-ficult to dissolve;Ni and Zn were easier to dissolve while Ti,V and Cd were almost insoluble.
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维普
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