Sorption and chromatographic determination of tetracycline in milk and dairy products

Abstract

The sorption of tetracycline on natural zeolite is studied: the optimum process conditions, distri bution coefficient, and sorption capacity were determined. A method for determining this antibiotic in milk and dairy products is proposed, based on the preliminary sorption concentration of tetracycline on zeolite followed by analyte determination by HPLC with UV detection. The advantages of this procedure are the low cost [ARC1]of analysis, and the simplicity and rapidity of execution. The procedure can be used in the prac tice of laboratories performing chemical analysis of foodstuffs.