悬浮液进样技术-原子荧光光谱法测定中成药中痕量砷、锑、硒和镉的分析方法及其干扰效应的研究

A Study of the Suspension Sampling-Atomic Fluorescence Spectrometric Tetermination of Trace As,Sb,Se and Cd in Chinese Traditional Medicines

目的 :利用悬浮液进样技术 -原子荧光光谱法测定中成药中痕量砷、锑、硒和镉的分析方法。方法 :将样品粉碎 ,过筛制备成琼脂 ,加入硫脲 -抗坏血酸消除共存离子的干扰。结果 :该方法快速、灵敏干扰少 ,标准回收率在 93.3%～ 10 0 .0 %之间。结论 :该方法用于测定中成药中痕量砷、锑、硒和镉 。

Objective :A method for The Suspension Sampling -Atomic Fluorescence Spectrometric Tetermination Of Trace As,Sb,Se and Cd in Chinese Traditional Medicines.Method: The samples were pulverized and suspended in agar sol.Test solutions were preparered by adding thiourea and vitamin C to eliminate chemical interference.Results:The Proposed method is fast, convenient and has less interferences.The recovery is 93.3%-100.0%.Conclusion:The method has been used to determine trace As,Sb,Se and Cd in Chinese Traditional Medicines with satisfactory results.