Study of the feasibility of focused microwave-assisted Soxhlet extraction of N-methylcarbamates from soil

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

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

A study of the feasibility of a focused microwave-assisted Soxhlet device for the extraction of N-methylcarbamates from soil has been performed. The main factors contributing to the extraction efficiency - namely microwave power, irradiation time and number of cycles - were optimized by means of a two-level full factorial design. The extracts were analysed by HPLC-post-column fluorescence derivatization-detection at excitation wavelength 340 nm and emission wavelength 445 nm. The method has allowed the extraction of carbamate pesticides from contaminated soil with quantitative recoveries, similar to those provided by the US Environmental Protection Agency method 8318, without degradation of the target compounds during the extraction and using less organic solvent, as 75-80% of the extractant was recycled.

Original languageEnglish (US)
Pages (from-to)133-140
Number of pages8
JournalJournal of Chromatography A
Volume953
Issue number1-2
DOIs
StatePublished - Apr 12 2002

Keywords

  • Carbamates
  • Extraction methods
  • Focused microwave-assisted Soxhlet extraction
  • Methylcarbamates
  • Pesticides
  • Soil

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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