Static-dynamic pressurized hot water extraction coupled to on-line filtration-solid-phase extraction-high-performance liquid chromatography-post-column derivatization-fluorescence detection for the analysis of N-methylcarbamates in foods

M. C. Herrera, R. C. Prados-Rosales, J. L. Luque-García, M. D. Luque De Castro

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49 Scopus citations


A combination of static-dynamic modes of pressurized hot water extraction has been used for the extraction of N-methylcarbamates (namely, oxamyl, dioxacarb, metholcarb, carbofuran and carbaryl) from different fruits and vegetables. The selection of water as leaching agent provides a clean approach which avoids the use of organic solvents. A flow injection manifold coupled to the extractor has allowed the automation of the subsequent steps (namely, filtration, preconcentration, individual chromatographic separation, post-column derivatization and fluorescence detection) involved in the analytical process. Good recoveries, ranging from 80 to 104%, and precision, expressed as relative standard deviation, between 3.0 and 8.4% have been achieved by the proposed method.

Original languageEnglish (US)
Pages (from-to)189-197
Number of pages9
JournalAnalytica Chimica Acta
Issue number2
Publication statusPublished - Jul 22 2002



  • N-Methylcarbamates
  • On-line filtration-preconcentration-chromatographic separation-derivatization-fluorescence detection
  • Pressurized hot water extraction
  • Static-dynamic extraction mode

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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