Conductometric Determination of Boric Acid by Reversed-phase High Performance Liquid Chromatography Using Sorbitol as a Complexing Agent

Abstract

Separation and determination of boric acid by reversed-phase liquid chromatography with conductivity detection have been demonstrated. D-Sorbitol was used as a precolumn complexing agent for boric acid and water as the mobile phase. The detection limit was 20 ng ml−1.

Determination of Boron by Flow Injection Analysis Using a Conductivity Detector

“…A HPLC method based on the reversed-phase separation and conductometric detection has also been proposed, but the study has been limited to the determination of pure boric acid. A flow injection method, based on the decrease in the absorbance of chromotropic acid solution due to the reaction of boric acid with the reagent, has been reported but the slow reaction kinetics is the major drawback of the method.…”