氢化物发生-双道原子荧光光谱法同时测定中药中不同形态的砷和锑  

Simultaneous Speciation Analysis of Arsenic and Antimony in Traditional Chinese Medicines by Hydride Generation-Double Channel Atomic Fluorescence Spectrometry

作　　者：杨莉丽[1] 李娜[2] 张德强[3] 

机构地区：[1]河北师范大学化学与材料科学学院,河北石家庄050016 [2]淮海工学院化学工程系,江苏连云港222005 [3]河北省科学院,河北石家庄050081

出　　处：《光谱学与光谱分析》2007年第4期810-812,共3页Spectroscopy and Spectral Analysis

基　　金：河北省自然科学基金项目(203104)资助

摘　　要：建立了一种氢化物发生-双道原子荧光光谱法同时测定中药中As（Ⅲ），As（Ⅴ），Sb（Ⅲ）和Sb（Ⅴ）的方法。对实验条件进行了优化，在最佳工作条件下，砷和锑的检出限分别为0．0903和0.0578μg·L^-1，RSD分别为2．01％和1．39％。将本法成功应用于中药样品的形态分析，As（Ⅲ）和As（Ⅴ）的回收率分别为90．8％～98．2％和89．2％～102．0％，Sb（Ⅲ）和Sb（Ⅴ）的回收率分别为89．7％～102．0％和90.3％～110．0％。A method is described for the simultaneous determination of As（ Ⅲ ）, As（ Ⅴ）, Sb（ Ⅲ） and Sb（ Ⅴ） in traditional Chinese medicines by hydride generation-double channel atomic fluorescence spectrometry（HG-AFS）. The experimental conditions that influence the fluorescence intensities of arsenic and antimony were investigated and optimized, and the influence of foreign ions and their elimination were studied. The detection limits were found to be 0. 090 3 and 0. 057 8μg · L^-1 for arsenic and antimony, respectively. The proposed method was applied to the determination of arsenic and antimony species in traditional Chinese medicines. Recoveries were in the ranges of 90.1%-105.0%, 91.3%-102.0%, 94.7%-109.0% and 98.2%-110.0% for As（Ⅲ ）, As（ Ⅴ）, Sb（ Ⅲ） and Sb（ Ⅴ）, respectively.

关 键 词：氢化物发生-双道原子荧光光谱法 形态分析 砷 锑 中药 

分 类 号：O657.3[理学—分析化学]