Abstract
A new turn-off fluorescent sensor for trace analysis of uranyl ion (UO22+) in aqueous samples has been introduced in this study. Norfloxacin (1-ethyl-6-fluoro-4-oxo-7-piperazin-1-yl-1H quinoline-3-carboxylic acid) (NF) shows a strong fluorescence which was quenched at 446 nm in the presence of UO22+. Under optimized conditions, the present NF sensor has several noteworthy features, including sensitivity, wide linear range, lower detection limit, a broad pH range and fast response time. Besides that, the interaction properties and the fluorescent mechanism between the present NF sensor and UO22+ were investigated by density functional theory.
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Elabd, A.A., Elhefnawy, O.A. Uranyl ion assessment based on the fluorescence quenching of Norfloxacin. J Radioanal Nucl Chem 329, 935–944 (2021). https://doi.org/10.1007/s10967-021-07831-8
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DOI: https://doi.org/10.1007/s10967-021-07831-8