用原子吸收分光光度法测定重铬酸铵中钾钠

Determination of Potassium and Sodium in (NH_4)_2Cr_2O_7 by Atomic Absorption Spectrometry

采用原子吸收分光光度法对化学试剂重铬酸铵中钾、钠的含量进行了测定。实验结果表明 ,该法具有准确度高、方法简单、快捷等特点。钾、钠的回收率分别在 95 2 5 %以上 ,RSD分别为 4 %、3%。

The contents of K?Na in chemical reagent of (NH 4) 2Cr 2O 7 have been determined by means of Atomic Absorption Spectrometry.The experimental results demonstrate that this method is high accurate, simple and rapid. The recovery of K?Na are over 95.2% and 92.0%, and the RSD of K?Na are 4% and 3%, respectively.