悬浮液进样-原子吸收法测定中药材中铜、锌、铁

本文提出了一种悬浮液进样－火焰原子吸收法测定中药材－－怀药（怀山药、怀牛膝、怀菊花）的新方法。并成功地进行了Cu,Zn,Fe的测定。将粉碎后的怀药悬浮于琼脂胶体中制成悬浮液，对悬浮剂的选择及化不干扰的消除进行了考察。将试液喷入空气－乙炔火焰中，用标准加入法测定，结果与HNO3＋H2SO4＋HClO4处理法一致。t检验结果表明：两种样品处理方法之间无显著性差异，可以采用悬浮液进样法取代HNO3＋H2SO4＋HClO4处理法，该方法快速简便、安全，有效，结果令人满意。

Determination of Cu, Zn and Fe in Huaiyao by Suspension Sampling-Flame Atomic Absorption Spectrometry

A new method--suspension sampling technique was applied to flame atomic absorption spectrometry and was successfully used to determine Cu,Zn,Fe in Huaiyao.Then studied the choice of suspension agent and elimination of chemical interference. The huaiyao sample was suspended in agar sol,and injected into air-acetylene flame by using standard addition method to determine Cu,Zn, Fe. Determined results were consistent with those obtained by HNO 3+H 2SO 4+HClO 4 method. The t-test showed that no obvious difference was found between the two methods.Displacement of HNO 3+H 2SO 4+HClO 4 method by suspension sampling method for the sample pretreatment is possible. This method is convenient, rapid and accurate.