Preparation of sodium p-styrene sulfonate-co-ethylene dimethacrylate monolithic column for analysis anionic in waste water by liquid chromatography
Oksil Venriza, Calvin Djamubir, Muhammad Ridwan

Politeknik Energi dan Mineral AKAMIGAS

Abstract

The suppressor composed of a sodium p-styrene sulfonate (NaSS)-ethylene dimethacrylate (EDMA) monolith that is made with sufficient porogen, and it is connected between stationary phase and detector. The aim of this research was to simultaneously determine inorganic anions (F-, Cl-, NO2-) in a single chromatographic run and investigate the suppression behavior using sodium bicarbonate-sodium carbonate and application of monolithic columns based on polymer resin for supports of strong cation exchanger. To enhance the suppressor performance cation-exchange capacity was manipulated with variation of monomer composition, porogen composition, temperature and time of polymerization. Acetonitrile concentration in the composed of sodium carbonate-bicarbonate eluent was varied and conducted to investigate the retention behaviour of the common inorganic anions (F-, Cl-, NO2-). The relative standard deviations (RSDs) for the retention time, peak area and peak height of three common inorganic anions (1.0 mM each of F&#8722-, Cl&#8722-, and NO2&#8722-) were between 0.01-1.24, 2.33-6.31 and 2.24-4.79%, respectively. The optimized condition was applied to the determination of Cl&#8722- inorganic anion in waste water samples.

Keywords: liquid chromatography, conductivity detector, capillary Column, inorganic anions

Topic: Environmental Chemistry