Fig. 5From: Eco-friendly, sensitive and inventive first derivative synchronous spectrofluorimetric determination of ciprofloxacin and phenylephrine in their pure form, single and combined eye dropsFirst derivative synchronous fluorescence spectra of: A PLN (0.02–0.05–0.07–0.1–0.2 and 0.5 µg/mL) at 283.4 nm. B CFX (4.0 µg /mL)Back to article page