Lead Sensor Using Gold Nanostructured Screen-Printed Carbon Electrodes as Transducers

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...

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Bibliographic Details
Published in:Electroanalysis (New York, N.Y.) N.Y.), 2009-04, Vol.21 (8), p.925-930
Main Authors: Martínez-Paredes, Graciela, González-García, María Begoña, Costa-García, Agustín
Format: Article
Language:English
Subjects:
Blood lead analysis
Electrochemical deposition
Gold nanoparticles
Nanostructured transducers
Screen-printed carbon electrodes
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Summary: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.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.200804496