离子色谱法与火焰原子吸收法测定降水中阳离子的比对研究

Contrast of Ion Chromatography With Flame Atomic Absorption Spectrometry for Determination of Cations in Precipitation

降水中钾、钠、钙、镁离子的化合物能够中和大气中的酸性污染物,有效降低雨水的酸度,因此,分析测定降水中的阳离子对防控酸雨和改善环境质量有着重要意义。本文采用了离子色谱法与火焰原子吸收法分别测定了降水中的钾、钠、钙、镁这四种阳离子,通过比对得知,这两种方法的测定结果无显著差异,均能满足质控要求。但是,测定多种阳离子时,离子色谱法可实现同时测定,比火焰原子吸收法更为简便。

The compounds of potassium,sodium,calcium and magnesium ions in precipitation can neutralize the acidic pollutants in the atmosphere and effectively reduce the acidity of rainwater,therefore,the analysis and determination of cations in precipitation is of great significance to the prevention and control of acid rain and the improvement of environmental quality.In this paper,ion chromatography and flame atomic absorption spectrometry were used for determining the cations of potassium,sodium,calcium and magnesium in precipitation,through comparison,it is known that the measurement results of these two methods have no significant difference,and both can meet the quality control requirements.However,ion chromatography can be used for determining many cations at the same time,it is more simple and convenient than flame atomic absorption spectrometry.