Gold nanoparticles decorated kaolinite mineral modified screen-printed electrode: Use for simple, sensitive determination of gallic acid in food samples.
Food Chem
; 453: 139701, 2024 Sep 30.
Article
em En
| MEDLINE
| ID: mdl-38781907
ABSTRACT
The current study offers the nanomolar quantification of gallic acid (GAL) based on gold nanoparticles (AuNps) and kaolinite minerals (KNT) modified on a screen-printed electrode (SPE). The electrochemical behavior of GAL was performed using differential pulse voltammetry (DPV) in Britton Robinson (BR) buffer solution at pH 2.0 as a supporting electrolyte. Under the optimized DPV mode parameters, the oxidation peak current of GAL (at 0.72 V vs Ag/AgCl) increased linearly in the range between 0.002 µmolL-1 and 40.0 µmolL-1 with a detection limit of 0.50 nmolL-1. The effect of common interfering agents was also investigated. Finally, the applicability of the proposed method was verified by quantification analysis of GAL in black tea and pomegranate juice samples.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Eletrodos
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Nanopartículas Metálicas
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Técnicas Eletroquímicas
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Ácido Gálico
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Ouro
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Caulim
Idioma:
En
Revista:
Food Chem
Ano de publicação:
2024
Tipo de documento:
Article