Abstract
Extrinsic chemiluminescence can be an efficient tool for determining pesticides and fungicides, which do not possess any intrinsic fluorescent signal. On this basis, (3-aminopropyl) trimethoxysilane (APTMS)-coated ZnO (APTMS@ZnO) was synthesized and tested as an extrinsic probe for the fungicide penconazole. Several synthetic routes were probed using either a one-pot or two-steps method, in order to ensure both a green synthetic pathway and a good signal variation for the penconazole concentration. The synthesized samples were characterized using X-ray diffraction (XRD), infrared (IR), Raman and ultraviolet-visible (UV-Vis) spectroscopy, scanning electron microscopy (SEM) imaging and associated energy-dispersive X-ray (EDX) analysis. The average size of the synthesized ZnO nanoparticles (NPs) is 54 ± 10 nm, in line with previous preparations. Of all the samples, those synthesized in two steps, at temperatures ranging from room temperature (RT) to a maximum of 40 °C, using water solvent (G-APTMG@ZnO), appeared to be composed of nanoparticles, homogeneously coated with APTMS. Chemiluminescence tests of G-APTMG@ZnO, in the penconazole concentration range 0.7–1.7 ppm resulted in a quenching of the native signal between 6% and 19% with a good linear response, thus indicating a green pathway for detecting the contaminant. The estimated detection limit (LOD) is 0.1 ± 0.01 ppm.
Funder
Regione Lazio con Determinazione
Progetti di Gruppi di Ricerca 2020
Sviluppo di un Dispositivo Portatile Integrato per la Valutazione Spettroscopica Multimodale non Invasiva della Qualità di Materie Prime Alimentari
Subject
General Materials Science
Reference92 articles.
1. (2022, October 18). Available online: https://www.sfa.gov.sg/food-information/risk-at-a-glance/use-of-pesticide-in-food.
2. (2022, October 08). Available online: https://www.sustainability-times.com/green-consumerism/report-finds-pesticides-may-make-many-u-s-foods-unsafe/.
3. (2022, October 18). Available online: https://efsa.onlinelibrary.wiley.com/doi/full/10.2903/j.efsa.2017.4853.
4. Prioritization of chemical hazards in spices and herbs for European monitoring programs;Food Control,2018
5. Liquid chromatography-high-resolution mass spectrometry for pesticide residue analysis in fruit and vegetables: Screening and quantitative studies;J. Chromatogr. A,2013
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