FAAS法测定丰城鸡血藤中锶含量的方法探讨  

Investigation of Determining Strontium in M.nitida Benth. var. hirsutissima. Z. Wei. by Flame Atomic Absorption Spectra

作　　者：张凌[1] 饶志军[1] 关媛媛[1] 张海明[1] 

机构地区：[1]江西中医学院现代中药制剂教育部重点实验室,江西南昌330004

出　　处：《光谱学与光谱分析》2010年第12期3421-3424,共4页Spectroscopy and Spectral Analysis

基　　金：国家"十一五"科技支撑计划项目(2006BA106A01);江西省自然科学基金计划项目(2009GZY0093);江西省教育厅科技项目(GJJ09274)资助

摘　　要：探索建立空气-乙炔火焰原子吸收测定丰城鸡血藤中微量元素锶含量的方法。以丰城鸡血藤为研究对象,HNO3-HCLO4（4＋1）为消解液,采用压力主控微波消解样品,EDTA-2Na溶液为抑制剂,用火焰原子吸收光谱法（FAAS）测定丰城鸡血藤中微量元素锶的含量。微波消解药材消化完全,测定线性良好,范围0-1.6μg.mL^-1,回归方程为Y=0.036 5X-0.001 1,r=0.999 4,方法学检出限为0.008 2μg.mL^-1（n=21）,平均回收率101.5%,RSD=2.04%。该方法灵敏度高,操作简单,结果准确,适用于该药材中锶元素的含量测定。The present paper is aimed to establish the method of determining the strontium in M.nitida Benth.var.hirsutissima.Z.Wei. by means of air-acetylene flame atomic absorption spectra,and also provide reference for the determination of the strontium in other traditional Chinese medicine.M.Nitida Benthvarhirsutissima Z.Wei.was taken as the object.The authors used nitric-perchloric acid as digestion solution to digest samples by microwave which was controlled by pressure,and used EDTA-2Na as the releasing agent to add in the samples for determining the strontium in M.nitida Benth.var.hirsutissima.Z.Wei.by FAAS.The results showed that the samples were entirely digested by microwave.The working curve was Y=0.036 5x-0.001 1,r=0.999 4,the range was 0-1.6 μg·mL-1,the average recovery rate was 101.5% with RSD 2.04%,and the method detection limit was 0.008 2 μg·mL-1（n=21）.It is concluded that this method is simple and accurate.It has high sensitivity and can be effectively used for determining the strontium in this traditional Chinese medicine.

关 键 词：微波消解 原子吸收 微量元素 锶 丰城鸡血藤 

分 类 号：R917[医药卫生—药物分析学]