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V. G. Amelin, Z. A. Ch. Shogah, D. S. Bolshakov
SORPTION-FLUORIMETRIC DETERMINATION OF
QUINOLONES IN WASTE AND NATURAL WATERS USING A SMARTPHONE
Abstract
A simple, affordable and safe (green chemistry)
method is proposed for the determination of 17 quinolone antibiotics in waste
and natural waters by the sorption-fluorimetric method using a smartphone as an
analytical signal recorder. The method is based on static sorption of
quinolones by silica gel from aqueous solutions. When the sorbate is irradiated
with ultraviolet light (365 nm), blue or turquoise fluorescence is observed,
the intensity of which was measured using a smartphone. The values of the basic
components of the RGB colorimetric system were used as an analytical signal,
followed by the calculation of the final color. The limits of detection and
determination were 0.0007–0.004 and 0.002–0.01 μg
/ ml, respectively, for all analyzed analytes. The ranges of the determined
contents are 0.002 (0.01)–0.2 μg / ml.
A method for the determination of quinolones in waste and natural waters is
proposed. The relative standard deviation of the analysis results did not
exceed 0.2.
Key words: quinolones, sorption on silica gel,
digital colorimetry, fluorimetry, smartphone, waste and natural waters.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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