Supercritical fluid extraction of organophosphorus pesticides from orange samples: Effect of solid additives on recovery

  1. Tena, M.T. 1
  2. Rios, A. 1
  3. Valcárcel, M. 1
  4. Sánchez-Alarcón, M. 2
  1. 1 Universidad de Córdoba
    info

    Universidad de Córdoba

    Córdoba, España

    ROR https://ror.org/05yc77b46

  2. 2 Lab. Agroalimentario de Cordoba, 14080 Córdoba, Spain
Revista:
Chromatographia

ISSN: 0009-5893

Año de publicación: 1997

Volumen: 46

Número: 9-10

Páginas: 524-528

Tipo: Artículo

DOI: 10.1007/BF02496371 SCOPUS: 2-s2.0-0030669291 GOOGLE SCHOLAR

Otras publicaciones en: Chromatographia

Repositorio institucional: lock_openAcceso abierto Editor

Resumen

A method based on extraction with supercritical carbon dioxide has been developed for the analysis of pesticides in fruit. The method was tested on ten organophosphorus pesticides and dicloran in orange samples. Various solid additives including anhydrous sodium sulfate, Extrelut and diatomaceous earth were examined as extraction enhancers. Also tested were magnesium silicate as interference adsorbent, to increase selectivity, and sodium carbonate as alkaline salt, to prevent acidification of the sample by CO 2. The recoveries obtained by SFE (92-104 %; mean relative standard deviation 10 %) were higher than those of conventional methods. The polar pesticide methamidophos, however, was not recovered.