The applicability to the determination of mercury in tuna of square wave anodic stripping voltammetry (SW-ASV) conducted at both solid gold electrode (SGE) and a gold nanoparticle-modified glassy carbon electrode (AuNPs-GCE) was demonstrated. Mercury content in two certified materials and in ten samples of canned tuna was measured. The performances of the electrodes were compared with one another as well as with two spectroscopic techniques, namely cold vapour atomic absorption spectroscopy (CVAAS) and a direct mercury analyser (DMA). The results found pointed out that both SW-ASV approaches were suitable and easy-to-use method to monitor mercury concentration in tunas, since they allowed accurate quantification at concentration values lower than the maximum admissible level in this matrix ([Hg] = 1 mg/kgwet weight,ww). In particular, mercury detection at the AuNPs-GCE showed a LOQ in fishmatrix of 0.1 lg/l, corresponding to 0.06 mg/kgww, with performance comparable to that of DMA.

Anodic stripping voltammetry with gold electrodes as an alternative method for the routine determination of mercury in fish. Comparison with spectroscopic approaches

GIACOMINO, AGNESE
First
;
ABOLLINO, Ornella;MALANDRINO, Mery
2017-01-01

Abstract

The applicability to the determination of mercury in tuna of square wave anodic stripping voltammetry (SW-ASV) conducted at both solid gold electrode (SGE) and a gold nanoparticle-modified glassy carbon electrode (AuNPs-GCE) was demonstrated. Mercury content in two certified materials and in ten samples of canned tuna was measured. The performances of the electrodes were compared with one another as well as with two spectroscopic techniques, namely cold vapour atomic absorption spectroscopy (CVAAS) and a direct mercury analyser (DMA). The results found pointed out that both SW-ASV approaches were suitable and easy-to-use method to monitor mercury concentration in tunas, since they allowed accurate quantification at concentration values lower than the maximum admissible level in this matrix ([Hg] = 1 mg/kgwet weight,ww). In particular, mercury detection at the AuNPs-GCE showed a LOQ in fishmatrix of 0.1 lg/l, corresponding to 0.06 mg/kgww, with performance comparable to that of DMA.
2017
221
737
745
Mercury, Gold nanoparticle-modified glassy carbon electrode, Solid gold electrode, Direct mercury analyser, Cold vapour atomic absorption spectroscopy
Giacomino, Agnese; Redda, Andrea Ruo; Squadrone, Stefania; Rizzi, Marco; Abete, Maria Cesarina; Gioia, Carmela La; Toniolo, Rosanna; Abollino, Ornella...espandi
File in questo prodotto:
File Dimensione Formato  
2017_Food Chemistry_routine determination Hg in fish_Giacomino et al..pdf

Accesso riservato

Descrizione: 2017_Food Chemistry_routine determination Hg in fish_Giacomino et al.
Tipo di file: PDF EDITORIALE
Dimensione 801.36 kB
Formato Adobe PDF
801.36 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Food Chem 2017 Supplem Mater.pdf

Accesso riservato

Descrizione: Supplementary data
Tipo di file: DATASET
Dimensione 687.63 kB
Formato Adobe PDF
687.63 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
2017_Food Chemistry and suppl_routine determination Hg in fish_Giacomino et al..pdf

Accesso riservato

Descrizione: Pdf Editoriale con Supplementary data
Tipo di file: PDF EDITORIALE
Dimensione 1.47 MB
Formato Adobe PDF
1.47 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
v1_Revised Manuscript_FOODCHEM-D-16-02082.pdf

Accesso aperto

Descrizione: POST PRINT
Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 390.9 kB
Formato Adobe PDF
390.9 kB Adobe PDF Visualizza/Apri
SUPPLEMENTARY MATERIAL_FOODCHEM-D-16-02082.pdf

Accesso aperto

Descrizione: data set
Tipo di file: DATASET
Dimensione 318 kB
Formato Adobe PDF
318 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: https://hdl.handle.net/2318/1638570
Citazioni
  • ???jsp.display-item.citation.pmc??? 4
  • Scopus 43
  • ???jsp.display-item.citation.isi??? 39
social impact