The Repeatability of the Quantitative Analysis in Electrochromatography

Abstract
The effect of a number of injection and separation parameters on the repeatability of quantitative analyses on a home-constructed instrument for electrochrornatography was studied. The performance of electrokinetic and hydrostatic sample injection methods was compared. Peak area and peak height values were applied as the evaluation parameters. The best quantitative repeatability for charged and uncharged compounds, obtained in this study was in the range of 1 % to 5% of relative standard deviation.