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| 树脂分离-氢化物发生-原子荧光光谱法测定中草药中不同形态的砷 | |
| 引用本文： | 杨莉丽,高丽荣,张德强.树脂分离-氢化物发生-原子荧光光谱法测定中草药中不同形态的砷[J].光谱学与光谱分析,2004,24(4):491-494. |
| 作者姓名： | 杨莉丽 高丽荣 张德强 |
| 作者单位： | 1. 河北师范大学化学学院,河北,石家庄,050016 2. 河北大学化学与环境科学学院,河北,保定,071002 3. 河北省科学院,河北,石家庄,050081 |
| 基金项目： | 河北省教委博士基金 (B2 0 0 1 2 0 2 )资助项目 |
| 摘 要： | 本文建立了应用离子交换树脂分离技术结合氢化物发生 原子荧光光谱法测定中草药方剂原生药、残渣、悬浮态及可溶态中的三价及五价砷的方法。研究了树脂静态分离和动态分离的最佳条件 ,利用两种方法成功地对黄连解毒汤中的三价及五价砷进行了分离。考察了仪器的工作条件、试剂浓度、增感剂的选择及共存离子的干扰及消除方法。方法检出限为 89 1ng·L- 1 ,RSD为 1 4 % ,样品加标回收率为 91 1%～10 9 3%。 |
| 关 键 词： | 氢化物发生原子荧光光谱法 中草药 砷形态 树脂分离 |
| 文章编号： | 1000-0593(2004)04-0491-04 |
| 修稿时间： | 2002年7月1日 |
Speciation Analysis of Arsenic in Traditional Chinese Medicines by Hydride Generation-Atomic Fluorescence Spectrometry with Ion Exchange Resin Separation |
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| Li-li Yang,Li-rong Gao,De-qiang Zhang.Speciation Analysis of Arsenic in Traditional Chinese Medicines by Hydride Generation-Atomic Fluorescence Spectrometry with Ion Exchange Resin Separation[J].Spectroscopy and Spectral Analysis,2004,24(4):491-494. | |
| Authors: | Li-li Yang Li-rong Gao De-qiang Zhang |
| Institution: | College of Chemistry, Hebei Normal University, Shijiazhuang 050016, China. |
| Abstract: | A method for the determination of arsenic species (arsenide, arsenate) in traditional Chinese medicines using hydride generation atomic fluorescence spectrometry (HG-AFS) with ion exchange resin separation has been studied. The ion exchange resin was used to separate the arsenide and arsenate, and the separation conditions were investigated. The experimental conditions that influence the fluorescence intensity and the reduction of arsenic(V) were investigated and optimized, and the influence of foreign ions and its elimination were studied. The proposed method was applied to the determination of arsenic species in water leachate of traditional Chinese medicines. A detection limit of 89.1 ng x mL(-1) and a recovery range of 91.1%-109.3% were obtained. |
| Keywords: | Atomic fluorescence spectrometry-hydride generation Traditional Chinese medicine Arsenic speciation Ion exchange resin |
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