Gold nanoparticles modified graphene platforms for highly sensitive electrochemical detection of vitamin C in infant food and formulae

Abstract An easy and reliable method based on a novel electroanalytical nanostructured sensor has been developed to perform quantification of vitamin C in commercial fortified cow-milk-based formulae foods for infants young children. The work is motivated by the need analytical tool be applied quality control laboratories quantitative assessment where its rapid cost-effective monitoring essential. ad hoc designed sensor, disposable screen-printed carbon electrodes modified with Au nanoparticles decorated reduced graphene oxide flakes, exhibits LOD 0.088 mg L?1. low cost, sample preparation, fast response high reproducibility (RSD ? 8%) proposed highlight suitability usage determining real complex food matrices, envisaging application sensing platform determination other compounds relevant chemistry manufacturing.