微波溶样-AAS法测定麻黄素浸膏粉中的12种元素  

Determination of Twelve Elements in Ephedrine Extraction by Microwave Digestion-AAS

作　　者：易新萍[1] 陈冬芸 刘建平[1] 刘清旺 

机构地区：[1]新疆大学分析测试中心,新疆乌鲁木齐830046 [2]新疆维吾尔自治区药品检验所,新疆乌鲁木齐830000 [3]新疆大学化学与化工学院,新疆乌鲁木齐830046

出　　处：《光谱学与光谱分析》2003年第1期81-83,共3页Spectroscopy and Spectral Analysis

基　　金：新疆大学校基金资助项目

摘　　要：微波溶样技术具有方便快捷、节约试剂、污染少、样品溶解完全等特点。本文采用HNO3+H2O2 微波溶样 ,利用原子吸收分光光度法 ,通过对麻黄素浸膏粉中Fe,Ca ,Mg,Zn ,Mn,Cu ,Na ,K ,Ni,Cd ,Pb ,Cr元素的测定 ,进行了微波消化条件的选择及消化结果精密度实验 ,并利用国家标准物质茶树叶GBW0 850 1验证了方法的准确度 ,测定值与标准值基本吻合。实验结果表明 ,该方法获得了满意的精密度、准确度。The sample digested by microwave are of some merits: simple, rapid, saving agents, nonpollution and being easyly digested. Microwave-digested sample with HNO 3-H 2O 2 and AAS method were established for the determination of Fe, Ca, Mg, Zn, Mn, Cu, Na, K, Ni, Cd, Pb and Cr in ephedrine extraction. In this paper, the selection of digestion conditions, including pressure, power, acids and time of digestion was evaluated. According to standard sample GBW08501 Tea-leaves, we checked the method accuracy and precision. The accuracy values are in the range of 91.1%-105%. The RSDs of flame atomic spectrometry and graphite furnace atomic spectrometry are in the range of 0.2%-2.3% and less than 7%, respectively. The results are very consistent with the the reference values. It proved that the method has satisfactory precision and accuracy. The proposed method is simple, rapid, of nonpollution and safe. It was has been applied to the determination of trace elements in ephedrine extraction and provided useful data for production in factory.

关 键 词：原子吸收法 测定 微波溶样 麻黄素浸膏粉 微量元素 分析 

分 类 号：R284.1[医药卫生—中药学]