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In-situ SERS detection of quinolone antibiotic residues in aquaculture water by multifunctional Fe3O4@mTiO2@Ag nanoparticles.
- Source :
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Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy . Dec2023, Vol. 302, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
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Abstract
- [Display omitted] • Fe 3 O 4 @mTiO 2 @Ag NPs were prepared as SERS substrates. • This SERS-based method could analyze quinolone antibiotics in aquaculture water. • Six quinolone antibiotics could be quantitatively analyzed. • Fe 3 O 4 @mTiO 2 @Ag NPs could efficiently catalyze the photolysis of antibiotics. Antibiotic residues in aquaculture environments disrupt the ecosystem balance and pose a potential hazard to human health when entering the food chain. Therefore, ultra-sensitive detection of antibiotics is necessary. In this study, a multifunctional Fe 3 O 4 @mTiO 2 @Ag core–shell nanoparticle (NP), synthesized using a layer-by-layer method, was demonstrated to be useful as an enhanced substrate for in-situ surface-enhanced Raman spectroscopy (SERS) detection of various quinolone antibiotics in aqueous environments. The results showed that the minimum detectable concentrations of the six investigated antibiotics were 1 × 10−9 mol/L (ciprofloxacin, danofloxacin, enoxacin, enrofloxacin, and norfloxacin) and 1 × 10−8 mol/L (difloxacin hydrochloride) under the enrichment and enhancement of Fe 3 O 4 @mTiO 2 @Ag NPs. Additionally, there was a good quantitative relationship between the antibiotics concentrations and SERS peak intensities within a certain detection range. The results of the spiked assay of actual aquaculture water samples showed that the recoveries of the six antibiotics ranged from 82.9% to 113.5%, with relative standard deviations ranging from 1.71% to 7.24%. In addition, Fe 3 O 4 @mTiO 2 @Ag NPs achieved satisfactory results in assisting the photocatalytic degradation of antibiotics in aqueous environments. This provides a multifunctional solution for low concentration detection and efficient degradation of antibiotics in aquaculture water. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANTIBIOTIC residues
*IRON oxides
*SERS spectroscopy
*AQUACULTURE
Subjects
Details
- Language :
- English
- ISSN :
- 13861425
- Volume :
- 302
- Database :
- Academic Search Index
- Journal :
- Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 171313355
- Full Text :
- https://doi.org/10.1016/j.saa.2023.123056