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Gold nanoparticles-carbon nanotubes modified sensor for electrochemical determination of organophosphate pesticides

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Abstract

An electrochemical sensor was developed for the detection of organophosphate pesticides based on electrodeposition of gold nanoparticles on a multi-walled carbon nanotubes modified glassy carbon electrode. Cyclic voltammetry was employed in the process of electrodeposition. Field emission scanning electron microscope and X-ray diffraction techniques were used for characterization of the composite. Organophosphate pesticides (e.g. parathion) were determined using linear scan voltammetry. A highly linear response to parathion in the concentration range from 6.0 × 10−5 to 5.0 × 10−7 M was observed, with a detection limit of 1.0 × 10−7 M estimated at a signal-to-noise ratio of 3. The method has been applied to the analysis of parathion in real samples.

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Acknowledgment

The authors thank the financial support from the National Natural Science Foundation of China (No.20247002), “National Basic Research (973) Program” Project (No.2005CB724201) of the Ministry of Science and Technology of China, Beijing Natural Science Foundation (No.8062010) and the Beijing Municipal Education Commission Scientific and Technological Project Foundation (No. Km200310005008).

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Authors and Affiliations

  1. College of Enviromental and Energy Engineering, Beijing University of Technology, Beijing, 100022, P.R. China

    Yan Zhang, Tian-Fang Kang, Yi-Wen Wan & Shui-Yuan Chen

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  1. Yan Zhang
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  2. Tian-Fang Kang
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  3. Yi-Wen Wan
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  4. Shui-Yuan Chen
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Correspondence to Tian-Fang Kang.

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Zhang, Y., Kang, TF., Wan, YW. et al. Gold nanoparticles-carbon nanotubes modified sensor for electrochemical determination of organophosphate pesticides. Microchim Acta 165, 307–311 (2009). https://doi.org/10.1007/s00604-008-0134-y

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  • DOI: https://doi.org/10.1007/s00604-008-0134-y

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