Separation of organophosphorus pesticides by using nano-liquid chromatography (Articolo in rivista)

Type
Label
  • Separation of organophosphorus pesticides by using nano-liquid chromatography (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.chroma.2009.03.005 (literal)
Alternative label
  • Katia Buonasera (a); Giovanni D'Orazio (a); Salvatore Fanali (a); Paola Dugo (b); Luigi Mondello (c) (2009)
    Separation of organophosphorus pesticides by using nano-liquid chromatography
    in Journal of chromatography (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Katia Buonasera (a); Giovanni D'Orazio (a); Salvatore Fanali (a); Paola Dugo (b); Luigi Mondello (c) (literal)
Pagina inizio
  • 3970 (literal)
Pagina fine
  • 3976 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 1216 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a) Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma I, Via Salaria Km 29,300, 00015 Monterotondo Scalo, Rome, Italy b) Dipartimento di Scienze degli Alimenti e dell'Ambiente, Facoltà di Scienze MM.FF.NN., Università degli Studi di Messina, Salita Sperone, 98166 Messina, Italy c) Dipartimento Farmaco-Chimico, Facoltà di Farmacia, Università degli Studi di Messina, 98168 Messina, Italy (literal)
Titolo
  • Separation of organophosphorus pesticides by using nano-liquid chromatography (literal)
Abstract
  • In the present research, the separation of a series of organophosphorus pesticides (fensulfothion,fenamiphos, profenofos, fonofos, isofenphos, dialifos, sulprofos and prothiofos), by using nano-liquid chromatography (nano-LC) with UV detection is described. Three 100 microm ID capillary columns, packed with different silica-based stationary phases (CN, C18, and phenyl), were investigated. Among these, the phenyl column offered the best results in terms of chromatographic performance, and was selected for pesticide analyses. Parameters, such as sample dilution solvent, injection volume, mobile phase composition and flowrate,were optimized in order to define the ideal experimental conditions. With the aim of improving sensitivity, on-column focusing of large injection volumeswas applied: a sensitivity increase of about 100-fold was attained, with limits of detection (LODs) and quantification (LOQs) within the 4.4–37.5 and 14.5–125.0 ng/mL ranges, respectively. The method was validated, with satisfactory results, through the measurement of the following parameters: limits of detection and quantification, precision, linearity and recovery. Finally, five different baby foods, previously fortified with a solution of the eight aforementioned pesticides, and then subjected to liquid–liquid extraction and solid-phase extraction clean-up, were analyzed. (literal)
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