水质分析中离子色谱法的应用分析

Application Analysis of Ion Chromatography in Water Quality Analysis

在水质分析中,为了降低水样处理对测定结果的影响,本文提出了一阶导数离子色谱法进行水中钙镁离子测定的方法。在实际测定中,先综合分析各因素对测定方法的影响,最终选择中性酸碱度、室温的测定环境。其次,在获得对应离子色谱图后,会对各色谱图进行一阶求导和另一离子导数值的获取,可证明导数值与钙、镁离子的浓度具有线性关系,可支持测定工作。最后,将该方法和滴定测定法的结果进行对比,能证明该方法在水质钙镁离子测定中具有良好价值,利于提高实验室分析工作的质量。

In order to reduce the impact of water sample treatment on the determination results in water quality analysis,this paper proposes a method of first derivative ion chromatography for the determination of calcium and magnesium ions in water.In actual measurement,the influence of various factors on the measurement method is first comprehensively analyzed,and finally a neutral pH and room temperature measurement environment is selected.Secondly,after obtaining the corresponding ion chromatogram,the first-order derivative and another ion derivative value will be obtained for each chromatogram,which can prove that the derivative value has a linear relationship with the concentration of calcium and magnesium ions and can support the measurement work.Finally,comparing the results of this method with titration determination method can prove its good value in the determination of calcium and magnesium ions in water quality,which is conducive to improving the quality of laboratory analysis work.