Ascorbic Acid determination using linear sweep voltammetry on flexible electrode modified with gold nanoparticles and reduced graphene oxide

Risultato della ricerca: Conference contribution

Abstract

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.
Lingua originaleEnglish
Titolo della pubblicazione ospiteIEEE MEDITERRANEAN ELECTROTECHNICAL CONFERENCE
Pagine406-410
Numero di pagine5
Stato di pubblicazionePublished - 2020

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Control and Optimization
  • Information Systems and Management
  • Energy Engineering and Power Technology

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