Journal of the Brazilian Chemical Society
versión impresa ISSN 0103-5053
FINETE, Virginia de L. M.; ARISSAWA, Márcia y AUCELIO, Ricardo Q.. Fluorimetric method for the determination of erythromycin using a photochemical derivatization approach. J. Braz. Chem. Soc. [online]. 2008, vol.19, n.7, pp. 1418-1422. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532008000700028.
Photochemical derivatization was proposed to enable intense fluorescence (412/465 nm) from erythromycin. Crucial experimental parameters such as type and concentration of the acid used to treat analyte solutions and UV irradiation time were adjusted. Limits of detection and quantification of 0.025 and 0.085 µg mL-1 were achieved with linear range up to 200 µg mL-1. The procedure was selective towards the presence of aminoglycoside antibiotics (kanamycin, gentamycin and amikacin). The method was tested using pharmaceutical formulations and one vaccine composition containing erythromycin as a preservative component, with analyte recoveries between 98 and 105%.
Palabras llave : photochemical induced fluorescence; erythromycin; pharmaceutical formulations.