Surface Enhanced Raman Scattering (SERS) supported by gold nanoparticles (AuNPs) was applied to detect and quantify residues of pyrimethanil on pome fruits, a widely used fungicide in horticultural species. Spheroidal AuNPs with different size were fabricated and compared in this study. The analytical procedure was set up on a silicon dioxide flat substrate to standardize SERS methodology. A Raman mapping strategy was exploited to increase signal reproducibility and to minimize bias due to different local surface morphologies. Univariate and multivariate regressions were compared for calibration. Multivariate PLS approach demonstrated acceptable repeatability and method stability (RMSECV = 4.79 ppm; RMSEP = 4.31 ppm) in the range 0-40 mg kg-1, providing higher accuracy and intra-day repeatability with a mean percentage error of 18.7% and 32.8% for PLS and univariate calibration, respectively. The method here proposed can be reliably applied for PMT detection on pome fruits within the European law limits.

Rapid and sensitive detection of pyrimethanil residues on pome fruits by Surface Enhanced Raman Scattering / Mandrile, L; Giovannozzi, A M; Durbiano, F; Martra, G; Rossi, A M. - In: FOOD CHEMISTRY. - ISSN 0308-8146. - 244:(2018), pp. 16-24-24. [10.1016/j.foodchem.2017.10.003]

Rapid and sensitive detection of pyrimethanil residues on pome fruits by Surface Enhanced Raman Scattering

Mandrile, L;Giovannozzi, A M;Durbiano, F;Rossi, A M
2018

Abstract

Surface Enhanced Raman Scattering (SERS) supported by gold nanoparticles (AuNPs) was applied to detect and quantify residues of pyrimethanil on pome fruits, a widely used fungicide in horticultural species. Spheroidal AuNPs with different size were fabricated and compared in this study. The analytical procedure was set up on a silicon dioxide flat substrate to standardize SERS methodology. A Raman mapping strategy was exploited to increase signal reproducibility and to minimize bias due to different local surface morphologies. Univariate and multivariate regressions were compared for calibration. Multivariate PLS approach demonstrated acceptable repeatability and method stability (RMSECV = 4.79 ppm; RMSEP = 4.31 ppm) in the range 0-40 mg kg-1, providing higher accuracy and intra-day repeatability with a mean percentage error of 18.7% and 32.8% for PLS and univariate calibration, respectively. The method here proposed can be reliably applied for PMT detection on pome fruits within the European law limits.
File in questo prodotto:
File Dimensione Formato  
Rapid and sensitive detection of pyrimethanil residues on pome fruits by Surface Enhanced Raman Scattering.pdf

non disponibili

Tipologia: Versione editoriale
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.01 MB
Formato Adobe PDF
1.01 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Rapid and sensitive detection of pyrimethanil residues on pome.pdf

accesso aperto

Tipologia: Documento in Pre-print
Licenza: Pubblico - Tutti i diritti riservati
Dimensione 882.88 kB
Formato Adobe PDF
882.88 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11696/57293
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 39
  • ???jsp.display-item.citation.isi??? 36
social impact