Rapid ultrasensitive chemometrics-fluorescence methodology to quantify fluoroquinolones antibiotics residues in surface water

A sensitive method for the determination of fluoroquinolones in surface waters at trace concentration level is presented. The proposed two-step methodology consists in a solid-phase extraction using C-18 membranes followed measurement of the emission molecular fluorescence spectra over extracted mem...

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Bibliographic Details
Published in:Journal of water chemistry and technology 2016-09, Vol.38 (5), p.280-286
Main Authors: González-Gómez, D., Cañada-Cañada, F., Campiglia, A. D., Espinosa-Mansilla, A., Muñoz de la Peña, A., Jeong, Jin Su
Format: Article
Language:English
Subjects:
Analytical Chemistry of Water
Antibiotics
Aquatic Pollution
Contamination
Earth and Environmental Science
Emission measurements
Environment
Fluorescence
Industrial Chemistry/Chemical Engineering
Membranes
Surface water
Waste Water Technology
Water Industry/Water Technologies
Water Management
Water Pollution Control
Water Quality/Water Pollution
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Summary:A sensitive method for the determination of fluoroquinolones in surface waters at trace concentration level is presented. The proposed two-step methodology consists in a solid-phase extraction using C-18 membranes followed measurement of the emission molecular fluorescence spectra over extracted membrane without elution of the analytes. Membrane background signal was removed by the used of chemometrics calculations, in addition chemometrics was as well used for the direct and simultaneous determination of the studied compounds. The method was optimized for the analysis of three fluoroquinolones: enoxacin (ENO), norfloxacin (NOR) and ofloxacin (OFLO). The fluorescence of these compounds increase drastically when they are in the membrane, thus with this method low concentrations are possible to be determined, as the concentration in which these compounds appear in surface water. Limits of detection at the ng•L –1 level were estimated for ENO, NOR and OFLO.
ISSN:1063-455X
1934-936X
DOI:10.3103/S1063455X16050064