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, AGNESEFirst
;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.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.