Differential pulse voltammetric determination of 4-nitroaniline using a glassy carbon electrode: comparative study between cathodic and anodic quantification
| Autor: | Jiří Barek, Marco Antonio Chaer Nascimento, Josino Costa Moreira, Priscila Tamiasso-Martinhon, Rene Pfeifer, Célia Sousa |
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| Rok vydání: | 2015 |
| Předmět: |
Detection limit
Trace Amounts Chemistry Calibration curve Inorganic chemistry Analytical chemistry 02 engineering and technology General Chemistry Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Anode Differential pulse voltammetry 0210 nano-technology Voltammetry |
| Zdroj: | Monatshefte für Chemie - Chemical Monthly. 147:111-118 |
| ISSN: | 1434-4475 0026-9247 |
| Popis: | Differential pulse voltammetry with a glassy carbon electrode was used for the determination of trace amounts of 4-nitroaniline in Britton-Robinson buffer at pH 2.0 as an optimal base electrolyte. 4-Nitroaniline can be determined by differential pulse voltammetry directly using either its electrochemical oxidation or reduction. The calibration curve was measured for both reactions in the same concentration range from 2 to 100 μmol dm−3. The calculated limits of detection and quantification are 0.2 and 0.7 μmol dm−3 (RSD 6.62 % and R 2 = 0.9906 for n = 5) for cathodic reduction and 0.3 and 1.0 μmol dm−3 (RSD 7.62 % and R 2 = 0.9995 for n = 5) for anodic oxidation. |
| Databáze: | OpenAIRE |
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