Aya Magdy Saad , Jenny Jeehan Mohamed Nasr , Asmaa Kamal El-Deen
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引用次数: 0
Abstract
Bepotastine (BPT), a second-generation antihistamine used for treating allergic rhinitis and pruritus, requires precise dosage calculation and accurate measurement in aqueous humor to ensure therapeutic efficacy and avoid adverse effects. This study presents a highly sensitive, cost-effective, readily-implementable, and ecologically sustainable method to detect BPT by enhancing its weak native fluorescence. This has been achieved by switching off the intramolecular photoinduced electron transfer (PET) process through phosphoric acid-induced protonation of the nitrogen in the piperidinyl ring. Further fluorescence enhancement was achieved by incorporating a solution of sodium dodecyl sulfate (SDS) surfactant thus increasing the quantum yield of BPT up to 10 folds. Fluorescence intensity was measured at 425 nm following excitation at 265 nm. The method, validated according to ICH guidelines, demonstrated linearity over the range of 0.70–6.0 µg/mL with a correlation coefficient of 0.9972 and a low detection limit of 0.046 µg/mL. It was successfully applied to measure BPT in aqueous humor and eye drops with % recoveries between 97.59 % and 102.62 %. Finally, sustainability was assessed using various tools, confirming the method’s practicality for routine clinical and pharmaceutical quality control analyses.
期刊介绍:
Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science.
The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments.
Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate.
Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to:
Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences,
Novel experimental techniques or instrumentation for molecular spectroscopy,
Novel theoretical and computational methods,
Novel applications in photochemistry and photobiology,
Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.