ICP-AES测定木香薷中4种宏量金属元素的含量  

Determination of 4 macro metal elements in Elsholtzia stauntonii by ICP-AES

作　　者：周秀梅[1] 李保印[1] 林紫玉[1] 

机构地区：[1]河南科技学院,河南新乡453003

出　　处：《河南科技学院学报（自然科学版）》2011年第5期26-29,共4页Journal of Henan Institute of Science and Technology(Natural Science Edition)

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项目(2010B222001);新乡市科技发展计划项目(09N032)

摘　　要：为研究木香薷中人体必需的宏量金属元素含量状况,用微波消解法消解样品,用电感耦合等离子体-原子发射光谱法（ICP-AES）测定了木香薷叶、茎、花序样品中4种宏量金属元素（Ca、K、Mg、Na）的含量.结果表明：各测试元素校准曲线的相关系数均为0.999 8~0.999 9,显示其良好的线性;测定的RSD值均在0.36%～2.22%之间,显示了较高的测定精密度;木香薷叶、茎、花序三个部位中各元素含量相比,花序中的K与Na含量最高,分别为19.98 g/kg与0.27 g/kg,而叶中是Ca与Mg的含量最高,分别为22.33 g/kg与2.80 g/kg,茎中Ca、K与Mg的含量均居中,Na的含量最低,仅为0.09 g/kg.木香薷叶、茎、花序中4种人体必需的宏量金属元素含量丰富,但种类和数量因部位不同而异.应分不同部位对木香薷进行开发利用较为合理.In order to study macro metal element contents of Elsholtzia stauntonii,the samples of the leaf,stem and inflorescence were digested by microware oven and 4 elements（K,Na,Ca,Mg） were determined by inductively coupled plasma-atomic emission spectrometry（ICP-AES）.The results showed that the correlation coefficients of the standard curves for 4 elements detected were 0.999 8～0.999 9,which indicated those were with good linearity;The RSD values were all between 0.36%～2.22%,which indicated the measuring method had good precision;Among the three parts of the stem,leaf and inflorescence,the contents of K and Na in the inflorescence are highest,being 19.98 g/kg and 0.27 g/kg,respectively.While,in the leaf,the contents of Ca and Mg are also highest with 22.33 g/kg and 2.80 g/kg,respectively.But in the stem,the contents of the 3 elements（Ca,K,Mg） are intermediate and the content of Na is the lowest with only 0.09 g/kg.The leaf,stem and inflorescence of E.stauntonii are rich in 4 macro metal elements,which are essential to human body,but the contents were very difference with the different part.It is more reasonable to exploit and utilize resource of E.stauntonii by different parts.

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

分 类 号：S687.3[农业科学—观赏园艺] S121[农业科学—园艺学]