原子吸收光谱法测定粉煤灰中氧化钾、氧化钠

Determination of Potassium Oxide and Sodium Oxide in Fly Ash by Flame Atomic Absorption Spectrometry

采用火焰原子吸收光谱法测定粉煤灰中氧化钾、氧化钠含量。采用氢氟酸-高氯酸混合酸分解样品,以氯化锶消除其他元素的干扰。本方法操作简便、再现性好、灵敏度高,适用于粉煤灰中氧化钾、氧化钠含量的测定。

Potassium oxide and sodium oxide （K2O,Na2O） in fly ash were determined by flame atomic absorption spectrometry（FAAS）. In the analytical procedure, the sample was dissolved in a mixed acid composed of HF and HClO4 ,other elements could be eliminated by SrCl2. This method has the advantages of easily operation, good reproductivity and high sensitivity. This method can be used for the determination of K2O,Na2O in fly ash.