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Optimization of anodic stripping voltammetry conditions for efficient detection of quantum dots at micro flow-cell electrodes

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Abstract

Micro flow-cell screen-printed electrodes were used for single and simultaneous electrochemical detection of core–shell CdSe/ZnS and core-type PbS quantum dots as newly emphasized nanolabels of antibodies in electrochemical immunosensors. Analysis in flow-cell arrangement ensures increased accumulation of Cd(II) and Pb(II) ions released from such quantum dots after acidic dissolution. The optimizations in terms of flow rate and regulation were performed. Conditions of electrochemical detection, concretely deposition potential and time, conditional time, and necessity of working electrode pretreatment were optimized. Such conditions enable simultaneous analysis of Cd(II) and Pb(II) ions released from CdSe/ZnS and PbS quantum dots at micro flow-cell screen-printed electrode without peak overlaps.

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Acknowledgements

The Czech Science Foundation Project No. 15-16549S and Project SGS-2016-004 of the Faculty of Chemical Technology (University of Pardubice, Czech Republic) are gratefully acknowledged.

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Authors and Affiliations

  1. Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic

    Michaela Čadková, Aneta Kovářová, Veronika Dvořáková, Zuzana Bílková & Lucie Korecká

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  1. Michaela Čadková
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  2. Aneta Kovářová
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  3. Veronika Dvořáková
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  4. Zuzana Bílková
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  5. Lucie Korecká
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Correspondence to Lucie Korecká.

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Čadková, M., Kovářová, A., Dvořáková, V. et al. Optimization of anodic stripping voltammetry conditions for efficient detection of quantum dots at micro flow-cell electrodes. Monatsh Chem 148, 571–575 (2017). https://doi.org/10.1007/s00706-017-1922-z

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  • DOI: https://doi.org/10.1007/s00706-017-1922-z

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