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Electrochemical Analysis of Acrylamide Using Screen‐Printed Carboxylated Single‐Walled Carbon Nanotube Electrodes |
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| Authors: | Fanny Jaqueline González‐Fuentes J Manríquez Luis A Godínez Alberto Escarpa Sandra Mendoza |
| Institution: | 1. Departamento de Investigación y Posgrado en Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Querétaro, Qro., 76010, Mexico;2. Centro de Investigación y Desarrollo Tecnológico en Electroquímica S.C. Parque Tecnológico Querétaro, Sanfandila, P.O. Box 064, Pedro Escobedo, 76703, Querétaro, Mexico;3. Departamento de Química Analítica, Química Física e Ingeniería Química, Facultad de Química, Edificio Polivalente, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Espa?a |
| Abstract: | Acrylamide (AA) was electrochemically detected and quantified by means of its voltammetric response on carboxylic modified Single‐Walled Carbon Nanotube Screen Printed Electrodes (COOH‐SWCNT‐SPEs). The electroreduction signal of AA was proportional to AA concentration at low values (below 300 µM) and the observed sensitivity was explained in terms of AA adsorption on the COOH‐SWCNT‐SPEs that was demonstrated using the electrochemical response of Fe(CN)6]3? and Fe(CN)6]4? and Raman spectroscopy experiments. In order to test the suggested analytic approach (LOD of 0.03 µM, LOQ of 0.04 µM), detection and quantification of AA in fried potatoes was carried out using the proposed electrochemical method and HPLC. Both techniques showed similar contents of AA. |
| Keywords: | Cyclic voltammetry Acrylamide Screen printed electrodes Electroadsorption |