Gas-Chromatographic Separation in Impurity Analysis

Gas chromatographic determination of trace amounts of sulfur compounds in industrial effluents

“…The existing traditional methods for the concentration of organic impurities in solutions based on distillation, extraction, and removal by gas flow with their subsequent trapping by adsorption (6) are of limited use for the analysis of labile sulfur compounds since the inherent losses of the compounds of interest may result in considerable error.…”

“…There are very few reports in which the retention mechanism(s) for various solutes on bonded phases has been studied. Karger and Sibley (6) have investigated retention characteristics on nonpolar bonded phases by varying the length and branching of the hydrocarbon brushes and by silanization of the support. They concluded that unreacted surface hydroxyl groups were the main source of retention.…”