ICP-AES测定木香薷中的10种微量金属元素  

Determination of 10 Micro Metal Elements of Elsholtzia stauntonii by ICP-AES

作　　者：周秀梅[1] 李保印[1] 张建伟[1] 

机构地区：[1]河南科技学院园艺园林学院,河南省新乡市华兰大道东段453003

出　　处：《光谱实验室》2012年第4期2124-2128,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：河南科技学院博士启动基金(2008012);河南省教育厅科技攻关(2010B222001);新乡市科技发展计划(09N032)

摘　　要：为探明木香薷叶、茎、花序中微量金属元素含量状况,样品经微波消解法消解后,采用电感耦合等离子体-原子发射光谱法(ICP-AES)测定了10种微量金属元素(Fe、Mn、Sr、Zn、Ni、Cu、Se、Pb、Cd、Be)的含量。结果表明:各测试元素的校准曲线均线性良好,方法的精密度高;在所测的7种人体必需的微量金属元素(Fe、Mn、Sr、Zn、Ni、Cu、Se)中,茎中检测到5种(Fe、Mn、Sr、Zn、Ni),而叶和花序中却仅检测到4种(Fe、Mn、Sr、Zn),且除Fe在叶中的含量最高外,Mn、Sr、Zn在茎中的含量均为最高;在所测的3种对人体有害的重金属元素(Pb、Cd、Be)中,叶中检测到Pb、Cd,茎中仅检测到Pb,其含量是叶中的5倍多,而花序中3种元素均未检出。木香薷不同器官中所含的微量金属元素种类和数量因器官不同而异。在对木香薷资源开发利用时,不同器官区别对待较为科学。In order to understand the contents of micro metal elements in the leaf,stem and inflorescence of Elsholtzia stauntonii,the samples were digested by microwave digestion,and the contents of 10 micro metal elements including Fe,Mn,Sr,Zn,Ni,Cu,Se,Pb,Cd,Be were determined by inductively coupled plasma-atomic emission spectrometry（ICP-AES）.The results showed that the standard curves for the various elements had good linearity,and the precision of measuring method was high.Among the 7 elements（Fe,Mn,Sr,Zn,Ni,Cu,Se） essential to human body,5 elements （Fe,Mn,Sr,Zn,Ni） were detected in the stem,but only 4 elements（Fe,Mn,Sr,Zn） in the leaf and the inflorescence were detected.The content of Fe in the leaf was the highest,while the contents of Mn,Sr,Zn in the stem were the highest among the three organs.Among the 3 elements（Pb,Cd,Be） harmful to human body,both Pb and Cd were determined in the leaf,while only Pb was detected in the stem,and the content of Pb in the stem was over 5 times as that in the leaf,but the 3 elements were all not found in the inflorescence.Therefore both the contents and kinds of micro metal elements in defferent organs of Elsholtzia stauntonii were different.It’s scientific to carry out different treatments to the different organs when the resources of Elsholtzia stauntonii is explored and utilized.

关 键 词：微波消解 电感耦合等离子体-原子发射光谱法 木香薷 微量金属元素 

分 类 号：O657.31[理学—分析化学]