Collect. Czech. Chem. Commun. 1983, 48, 1129-1136

A conductivity detector for liquid chromatography with a cell volume of 0.1 μl

Danuše Kouřilová, Karel Šlais and Miloš Krejčí

Institute of Analytical Chemistry, Czechoslovak Academy of Sciences, 611 42 Brno


A conductivity detector with a cell volume of 0.1 μl has been devised to fit glass micropacked columns with an inner diameter of 0.5 mm. D.c. current was used in the measurements, the voltage applied to the electrodes was 30 V. Organic acids separated in a reverse-phase system were detected; the minimum detectable concentrations were 6 . 10-7 - 1 . 10-5 mol l-1 according to the acid concerned and the composition of the mobile phase. The linear range of the detector is 400.