Abstract
A new kinetically-based spectrophotometric method for the determination of micro quantities of neomycin is described in this paper. It is an adaptation of the modified Berthelot method which is a widely used colorimetric procedure for urea determination. The method was developed due to neomycin effect on 2,2′-dicarboxyindophenol formation. The experimental conditions for successful determination of neomycin were optimized. The relative standard deviation (RSD) for the neomycin concentration interval of 77–154 μg/mL, ranges from 0.7 to 1%. The method was directly applied to determining neomycin in ophthalmic drops. The obtained results in analyzed pharmaceutical samples were in accordance with disc-diffusion microbiological method results.
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Rašić Mišić, I.D., Miletić, G.Ž., Mitić, S.S. et al. Kinetic-spectrophotometric determination of neomycin. J Anal Chem 70, 234–239 (2015). https://doi.org/10.1134/S106193481502015X
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DOI: https://doi.org/10.1134/S106193481502015X