title: Solid phase extraction on sax columns as an alternative for ochratoxin A analysis in maize.
abstract: A sensitive and reliable method is described for the determination of ochratoxin A (OTA) in maize. An extraction and clean-up procedure was used, with chloroform-phosphoric acid as the extractant, and liquid-liquid partition and anion-exchange chromatography (SAX columns) for the clean-up. Quantification of toxin is achieved by high performance liquid chromatography (HPLC). Recoveries were between 81-94 % at 3-90 ng/g levels. The detection limit was 0.02 ng.
authors.affiliation: Chemistry Department, Universitat de Lleida, Lleida, España.
authors.forename: J M
authors.initials: JM
authors.lastname: Pelegri
authors.forename: C
authors.initials: C
authors.lastname: Velázquez
authors.forename: V
authors.initials: V
authors.lastname: Sanchís
authors.forename: R
authors.initials: R
authors.lastname: Canela