Abstract
Approved, basic, effective and successful spectroscopic strategies (spectrophotometric and spectrofluorimetric) were created to measure seven cephalosporins: cefpiramide (I), cefuroxime (II), cefoxitin (III), ceftazidime (IV), cefpirome (V), ceftobiprole (VI), and ceftriaxone (VII). These strategies used a two-fold complex arrangement response for the drug amino groups with Eosin Y (EY). The examined drugs were determined spectrophotometrically at 542-550 nm in acetic acid derivative buffer. The examined drugs were determined spectrofluorimetrically by measuring their quenching effect on EY local fluorescence at 545 nm after excitation at 305 nm. The absorbance-intensity plots were rectilinear over the ranges 20-100, 10-130, 20-220, 30-230, 10-210, 20-180 and 10-130 mu g ml(-1) for I, II, III, IV, V, VI, and VII samples, respectively. The fluorescence-intensity plots were rectilinear over the ranges 0.5-1.5, 0.1-0.9, 0.3-1.5, 0.5-2.5, 0.1-0.9, 0.5-2.5 and 0.1-1.0 mu g ml(-1) for I, II, III, IV, V, VI, and VII samples, respectively. The recommended materials were certified as adhering to International Council for Harmonisation (ICH) guidelines and were used to examine the tested drugs in different dosage forms and in human plasma tests. The approved materials matched the reference materials.