Determination of streptomycin in eggs yolk by capillary electrophoresis

A capillary electrophoresis method for the determination of streptomycin in eggs is described. Analyses were performed on an uncoated silica capillary using a buffer solution of 30 mM sodium dihydrophosphate, 5 mM boric acid and 5 mM sodium tetraborate. Analytes were detected at 200 nm an the calibration curve was linear over the range of 0.16 to 2.0 μg g−1 (r=0.999). The total analysis time was 7 min. The method has been successfully applied to the quantitative determination of streptomycin in hen eggs after drug ingestion and could used for evaluation of maximum residue limits.