Adsorption effects on retention behaviour of hydrocarbons in gas-liquid and gas-solid chromatography with the use of modified alumina coated with diphenyl phthalate as column packings

Study of the Adsorption of Some Amino Acids by Silica Chemically Modified with Aminobenzenesulfonic and Phosphate Groups

“…This mixture was These materials have been used as a stationary phase for refluxed with constant agitation for 10 h at 90ЊC. Afterward, chromatography (10), principally in HPLC (11)(12)(13).…”