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RESEARCH PRODUCT
Ascorbic Acid determination using linear sweep voltammetry on flexible electrode modified with gold nanoparticles and reduced graphene oxide
Carmelo SunseriGiuseppe AielloBernardo PatellaFrancesca MazzaraRosalinda Inguantasubject
Materials scienceElectrochemical sensors ascorbic acid food industry milk reduced graphene oxide gold nanoparticles linear sweep voltammetryfood industryOxide02 engineering and technology010402 general chemistry01 natural sciencesreduced graphene oxidelaw.inventionchemistry.chemical_compoundlawSettore ING-IND/17 - Impianti Industriali MeccanicimilkGrapheneelectrochemical sensors021001 nanoscience & nanotechnologyAscorbic acid0104 chemical sciencesIndium tin oxideElectrochemical gas sensorSettore ING-IND/23 - Chimica Fisica ApplicatachemistryColloidal goldgold nanoparticlesElectrodeLinear sweep voltammetryascorbic acid0210 nano-technologylinear sweep voltammetryNuclear chemistrydescription
Indium tin oxide (ITO) coated on flexible polyethylene terephthalate (PET) substrate electrode was modified with reduced graphene oxide and gold nanoparticles by simple co-electrodeposition performed at -0.8 V vs SCE for 200 s. All samples were characterized by electron scan microscopy. The as prepared electrode was used as electrochemical sensor to selective detection of ascorbic acid using linear sweep voltammetry. Excellent results were obtained in a linear range from 20 to 150 µM of ascorbic acid with a limit of detection of about 3.1 µM (S/N=3.3). The sensors have a reproducibility of about 5.5% and also show high selectivity towards different interferents such as chlorine, calcium, magnesium, sulphate ions, sodium and glucose. Ascorbic acid was detected also in milk samples demonstrating the possibility quantify this analyte in real samples with a very cheap method.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-06-01 |