Lead Sensor Using Gold Nanostructured Screen‐Printed Carbon Electrodes as Transducers |
| |
Authors: | Graciela Martínez‐Paredes María Begoña González‐García Agustín Costa‐García |
| |
Institution: | Departamento de Química Física y Analítica, Facultad de Química, Universidad de Oviedo, C/ Julián Clavería s/n, 33006?Oviedo, Asturias, Spain. |
| |
Abstract: | Gold nanostructured screen‐printed carbon electrodes are demonstrated to be suitable transducers for the determination of lead using square‐wave voltammetry. Reproducible gold nanostructures have been obtained by direct electrochemical deposition. A calibration plot from 2.5 to 250 μg/L was obtained in acidic solutions of Pb(II) with a reproducibility of 4% (n=10). The detection limit was 0.09 μg/L of lead. The method is then applied to perform a blood lead analysis by adjusting square‐wave parameters in capillary or venous blood with a minimum sample pretreatment and excellent accuracy and reproducibility. |
| |
Keywords: | Nanostructured transducers Blood lead analysis Electrochemical deposition Gold nanoparticles Screen‐printed carbon electrodes |
|