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超声波辅助提取-HG-ICP-AES法测定中草药雷公藤中可溶态Sb(Ⅲ)和Sb(Ⅴ)
引用本文:谢建新,邓必阳.超声波辅助提取-HG-ICP-AES法测定中草药雷公藤中可溶态Sb(Ⅲ)和Sb(Ⅴ)[J].光谱学与光谱分析,2005,25(8):1347-1350.
作者姓名:谢建新  邓必阳
作者单位:广西师范大学化学化工学院,广西,桂林,541004
基金项目:广西科学基金(0236014)和广西师范大学博士基金资助
摘    要:本文建立了用超声波辅助提取,氢化物发生-电感耦合等离子体原子发射光谱法测定中草药雷公藤中可溶态Sb(Ⅲ)和Sb(Ⅴ)的分析方法。研究了超声波辅助提取的影响因素、锑形态分离的最佳pH值、仪器工作条件对锑氢化物发生的影响及五价锑的还原条件,探讨了共存离子对锑测定的干扰及消除方法。Sb(Ⅲ)和Sb(Ⅴ)的检出限分别为0.3和2.4μg.L-1,相对标准偏差分别为3.9%和4.5%,样品加标回收率为93%~105%。

关 键 词:氢化物发生  电感耦合等离子体原子发射光谱法  形态分析  
文章编号:1000-0593(2005)08-1347-04
收稿时间:2004-03-16
修稿时间:2004-05-28

Determination of Water-Soluble Antimony (Ⅲ) and Antimony(Ⅴ) in Leigongteng Using Ultrasound-Assisted Extraction by HG-ICP-AES
XIE Jian-xin,DENG Bi-yang.Determination of Water-Soluble Antimony (Ⅲ) and Antimony(Ⅴ) in Leigongteng Using Ultrasound-Assisted Extraction by HG-ICP-AES[J].Spectroscopy and Spectral Analysis,2005,25(8):1347-1350.
Authors:XIE Jian-xin  DENG Bi-yang
Institution:College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China.
Abstract:A method for the determination of water-soluble antimony (III) and antimony (V) in Leigongteng using ultrasound-assisted extraction by hydride generation inductively coupled plasma atomic emission spectrometry was developed in the present paper. Affecting parameters of ultrasound extraction, the pH of antimony species, the operation condition of hydride generation and inductively coupled plasma atomic emission spectrometry were investigated and optimized. The effect of coexisting ions on the determination of antimony was also investigated. The detection limits are 0.3 and 2.4 ng x mL(-1) for antimony (and antimony (V), respectively, and with RSD 3.9% for antimony (III) and 4.5% for antimony (V). The recovery is in the range of 93% to 105%.
Keywords:Hydride generation  Inductively coupled plasma atomic emission spectrometry  Species analysis  Antimony
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