Extraction of Pesticides from Aqueous Samples: a Comparative Study

  1. Barrio, C.S. 1
  2. Melgosa, E.R. 1
  3. Asensio, J.S. 1
  4. Bernal, J.G. 2
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Revue:
Mikrochimica acta

ISSN: 0026-3672

Année de publication: 1996

Volumen: 122

Número: 3

Pages: 267-277

Type: Article

SCOPUS: 2-s2.0-0001267585 WoS: WOS:A1996TY78900010 GOOGLE SCHOLAR

D'autres publications dans: Mikrochimica acta

Résumé

Three different extraction procedures for eight pesticides (chlorfenvinphos, diazinon, ethyl parathion, ethiofencarb, fenitrothion, malathion, metalaxyl, pirimicarb) in water samples are compared. The extraction procedures are: liquid-liquid extraction (LLE), solid phase extraction (SPE) and microextraction (ME). For each procedure the most suitable conditions were obtained experimentally, with special remarks on ME, in which the effects of different mixtures of Kaltron with other solvents were tested. A preconcentration factor (PF) was used to rank the methods; the best results were observed for ME, (PF 15-45, whereas PF < 10 for SPE, and PF ≤ 13 for LLE). In all cases, the determination was performed by gas chromatography, using a nitrogen phosphorus detector and the internal standard method (methyl parathion) as the quantification procedure.