One century of liquid chromatography: From Tswett’s columns to modern high speed and high performance separations

The method of simultaneous determination of F−, Cl−, NO2−, Br−, NO3−, HPO42−, SO42− ions on trace level by IC using preliminary concentration and water removal from concentrating column was proposed. Detection limits were 10−9 to 10−8% for sample volume 10 ml depending on the anion.