Glassy Carbon Electrode Modified with Layering of Carbon Black/Poly(Allylamine Hydrochloride) Composite for Multianalyte Determination |
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| Authors: | Jessica Scremin Gabriel J. Mattos Robert D. Crapnell Samuel J. Rowley-Neale Craig E. Banks Elen R. Sartori |
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| Affiliation: | 1. Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, CEP 86057-970 Londrina – PR, Brazil Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD UK;2. Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, CEP 86057-970 Londrina – PR, Brazil;3. Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD UK |
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| Abstract: | An electrochemical sensor using glassy carbon electrode modified with carbon black within a poly(allylamine hydrochloride) film is proposed in this work. The novel sensor was characterized by scanning electron microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry using the redox probe Fe(CN)63−/4−. The sensor was applied for the simultaneous determination of dopamine (DA), paracetamol (PAR), amlodipine (AML), and rosuvastatin (RSV). The quantification of all four analytes was carried out by linear sweep voltammetry and presented a linear concentration range for all analytes from 1.0 to 90 μmol L−1, with limit of detection of 0.55, 1.3, 5.7, and 3.0 μmol L−1 for DA, PAR, AML, and RSV, respectively. This sensor was successfully applied in the simultaneous determination of these analytes in environmental, pharmaceutical, and biological samples. |
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| Keywords: | simultaneous determination modified electrode voltammetry polymer complex samples. |
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