, 70:1461 | Cite as

Determination of Picoxystrobin and Pyraclostrobin by MEKC with On-Line Analyte Concentration

  • Cabrini F. de Souza
  • Alessandra L. M. C. da Cunha
  • Ricardo Queiroz Aucélio
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Micellar electrokinetic capillary chromatography was used for the determination of picoxystrobin and pyraclostrobin. The background electrolyte consisted of borate buffer (40 mmol L−1 pH 8.5), SDS (30 mmol L−1) and acetonitrile (15% in volume). Runs were made at 25 °C with 25 kV applied potential. The developed method was applied to analyte fortified urine samples. On-line analyte concentration, combined with a capillary of a longer optical path length, allowed limits of quantification of 8.6 × 10−8 mol L−1 for picoxystrobin and 1.8 × 10−7 mol L−1 for pyraclostrobin.


Micellar electrokinetic capillary chromatography On-line analyte concentration Picoxystrobin Pyraclostrobin 



Authors thank FINEP, CNPq and FAPERJ for research grants and scholarships. Statsoft-Brazil is also acknowledged.


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Copyright information

© Vieweg+Teubner | GWV Fachverlage GmbH 2009

Authors and Affiliations

  • Cabrini F. de Souza
    • 1
  • Alessandra L. M. C. da Cunha
    • 1
  • Ricardo Queiroz Aucélio
    • 1
  1. 1.Departamento de QuímicaPontifícia Universidade Católica do Rio de JaneiroRio de JaneiroBrazil

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