微波消解FAAS法对紫薯叶中六种金属元素的测定  

Determination of Six Metallic Elements in Leaf of Solanum tuberdsm by Flame Atomic Absorption Spectrophotoments after Microwave Digestion

作　　者：肖月星[1] 李银保[1] 张剑[1] 

机构地区：[1]赣南医学院药学院,江西赣州341000

出　　处：《广州化工》2016年第5期152-153,166,共3页GuangZhou Chemical Industry

基　　金：赣南医学院人才引进课题(2014年)

摘　　要：运用微波消解-火焰原子吸收光谱法直接测定紫薯叶中Fe、Cu、Mg、Ca、Mn、Zn 6种金属元素。紫薯样品使用优级纯的浓硝酸为消解剂,在微波消解仪中消解成可进样测定的溶液,测定时采用标准曲线法并对实验结果进行加样回收。从检测结果分析,通过FAAS法测定的紫薯叶中含有人体生理需要的上述6种金属元素,其中Fe的含量为296.57μg/g,Cu的含量为10.24μg/g,Zn的含量为52.61μg/g,Mn的含量为78.33μg/g,Ca的含量为4258.74μg/g,Mg的含量为3256.29μg/g,采用此方法回收率在95.0%~106.0%之间。Six trace elements content was directly analyzed by flame atomic absorption spectroscopy including Fe,Cu,Mg,Ca,Mn,Zn in leaf of Solanum tuberdsm after digesting by microwave. The sample was diluted by microwave with HNO3（ GR） in microwave digesting machine. The method was simple and rapid by calibration curve method. The results showed that the leaf of Solanum tuberdsm embraced lots of metallic elements,the concentration of Fe,Cu,Mg,Ca,Mn,Zn were 2 9 6. 5 7 μg / g,1 0. 2 4 μg / g,3 2 5 6. 2 9 μg / g,4 2 5 8. 7 4 μg / g7 8. 3 3 μg / g,5 2. 6 1 μg / g,respectively,which was necessary for people. The recoveries of these microelements were between 9 5. 0 % to 1 0 6. 0 %.

关 键 词：紫薯叶 金属元素火焰原子吸收光谱法 

分 类 号：O657.31[理学—分析化学]