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- W1866884629 abstract "A new fluorescent sensor (FC4) based on fluorescein dithia-cyclic skeleton was designed and prepared as a fluoroionophore for the optical and visual-eye detections of Hg2+ in aqueous buffer solution. FC4 was prepared via Kornblum oxidation, ester hydrolysis, alkylation, imine formation and imine reduction. The sensor provided highly sensitive and selective ON–OFF fluorescence sensing toward Hg2+ and was shown to discriminate various interfering metal ions, particularly Cu2+ and Pb2+ as well as Al3+, Ba2+, Ca2+, Cd2+, Fe3+, K+, Mg2+, Mn2+, Na+ and Ni2+. Sensor FC4 also exhibited chromogenic change upon binding to Hg2+, which served as a “visual-eye” indicator which could be observed as a noticeable change of the solution color from yellow to orange. The Hg2+ detection limit of the sensor was 7.38 × 10−9 or 1.48 ppb which was lower than a permissible concentration of Hg2+ in drinking water regulated by the United States Environmental Protection Agency (U.S. EPA)." @default.
- W1866884629 created "2016-06-24" @default.
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- W1866884629 date "2016-03-01" @default.
- W1866884629 modified "2023-10-01" @default.
- W1866884629 title "Highly sensitive and selective Hg2+-chemosensor based on dithia-cyclic fluorescein for optical and visual-eye detections in aqueous buffer solution" @default.
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- W1866884629 doi "https://doi.org/10.1016/j.snb.2015.09.131" @default.
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