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Electroanalytical Behaviour of a Nanoarray Self-Assembled Thiocholesterol Gold Electrode

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Abstract

 Thiocholesterol forms a self-assembled monolayer (SAM) on polycrystalline gold, offering a defect-rich hydrophobic surface. This SAM gold electrode has been exploited in batch and flow injection analysis (FIA) as it allows selective detection of hydrophobic analytes such as phenothiazines in presence of potentially interfering species such as ascorbic acid. Several phenothiazines have been investigated. Quantification has been achieved in FIA, in a broad linear concentration range: 0.5–100 μM. The stability of the modified electrode allows more than 500 sample injections in FIA.

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Authors and Affiliations

  1.  Institute of Pharmacy, Free University of Brussels (ULB), Campus plaine CP205/6, 1050 Brussels, Belgium, , , , , , BE

    Zhongping Yang & Jean-Michel Kauffmann

  2.  Department of Analytical Chemistry, Faculty of Science, University of Extremadura, Av. de Elvas s/n. 06071-Badajoz, Spain, , , , , , ES

    María-Isabel Acedo Valenzuela

  3.  Department of Analytical Chemistry, Faculty of Pharmacy, University of Ankara, Ankara, Turkey, , , , , , TR

    Sibel Özkan

Authors
  1. Zhongping Yang
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  2. Jean-Michel Kauffmann
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  3. María-Isabel Acedo Valenzuela
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  4. Sibel Özkan
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Additional information

Received May 7, 1998. Revision October 19, 1998.

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Yang, Z., Kauffmann, JM., Acedo Valenzuela, MI. et al. Electroanalytical Behaviour of a Nanoarray Self-Assembled Thiocholesterol Gold Electrode. Mikrochim Acta 131, 85–90 (1999). https://doi.org/10.1007/PL00021392

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  • DOI: https://doi.org/10.1007/PL00021392

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