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4. Stripping Analysis of As(III) by Means of Screen-Printed Electrodes Modified with Gold Nanoparticles and Carbon Black Nanocomposite

Author

Sara Politi, Danila Moscone, Giuseppe Palleschi, Fabiana Arduini, Stefano Cinti, Cinti, S, Politi, S, Moscone, D, Palleschi, G, and Arduini, F

Subjects
Nanocomposite, Materials science, Stripping (chemistry), Analytical chemistry, chemistry.chemical_element, Nanoparticle, Carbon black, Analytical Chemistry, Anodic stripping voltammetry, chemistry, Colloidal gold, Electrode, Electrochemistry, Settore CHIM/01 - Chimica Analitica, Carbon, Nuclear chemistry
Abstract

A novel sensor based on carbon black-gold nanoparticle nanocomposite modified screen-printed electrode (CB-AuNPs/SPE) for the detection of As(III) has been developed. The sensor was prepared modifying the SPE with CB and AuNPs by a drop casting automatable deposition. The As(III) was detected by CB-AuNPs/SPE using anodic stripping voltammetry, with a high sensitivity (673 6 mAmM 1cm 2) and reaching a LOD of 0.4 ppb. Finally, CB-AuNPs/SPE has been applied to As(III) trace analysis in drinking water, obtaining satisfactory recovery values (99 9%).

Published
2014

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