O-(β-hydroxyethyl)rutosides determination by micellar flow injection (FI)-spectrofluorimetry

摘要

A simple,eco-friendly.sensitive and economic flow injection spectrofluorimetric method was developed for the determination of O-(β-hydroxyethyl)rutosidcs.The procedure was based on the use of an anionic surfactant such as sodium dodecyl sulfate to provide an appreciable O-(β-hydroxyethyl)rutosides fluorescence enhancement,increasing considerably the sensitivity of detection.All the variables affecting the fluorescence intensity were studied and optimized.The flow rate was 5 mL/min with detection at 450 nm(after excitation at 346 nm).A linear correlation between drug amount and peak area was established for 0-(β-hydroxyethyl)rulosides in the range of 0.01-200 μg/mL with a detection limit of0.001 μg/mL(s/n = 3).Validation processes were performed by recovering studies with satisfactory results.The new methodology can be employed for the routine analysis of 0-(P-hydroxyethyl)rutosides in bulks as well as in commercial formulations.