Title

Solid-Liquid Extraction Fluorescence Line Narrowing Spectroscopy Of Fluoroquinolones In Aqueous Samples

Keywords

FLNS; Fluorescence line narrowing spectroscopy; Fluoroquinolones; Solid-liquid extraction

Abstract

We present a simple, selective, and sensitive method for the analysis of fluoroquinolones in water samples without previous separation. Octadecyl silica membranes are used with the dual purpose of sample preconcentration and solid substrate for fluorescence line narrowing spectroscopy. Measurements at liquid helium temperature (4.2 K) are easily made with the aid of a cryogenic fiber-optic probe. The entire procedure takes less than 15 minutes per sample and it consumes only 100 μL of organic solvent. Unambiguous fluoroquinolone determination is accomplished via wavelength-time matrices, which provide simultaneous information on spectral peak purity and fluorescence lifetime. We show that 10 mL of water sample are enough to detect analyte concentrations at parts-per-billion levels. The potential of this approach for the analysis of real world samples is demonstrated with the analysis of a synthetic mixture of seven fluoroquinolones spiked in a heavily contaminated water sample. © 2006 Society for Applied Spectroscopy.

Publication Date

10-1-2006

Publication Title

Applied Spectroscopy

Volume

60

Issue

10

Number of Pages

1174-1180

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1366/000370206778664617

Socpus ID

33750161627 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33750161627

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