title: Simultaneous determination of pesticides, biopesticides and mycotoxins in organic products applying a quick, easy, cheap, effective, rugged and safe extraction procedure and ultra-high performance liquid chromatography-tandem mass spectrometry.
abstract: A method for the simultaneous determination of pesticides, biopesticides and mycotoxins from organic products was developed. Extraction of more than 90 compounds was evaluated and performed by using a modified QuEChERS-based (acronym of Quick, Easy, Cheap, Effective, Rugged, and Safe) sample preparation procedure. The method was based on a single extraction with acidified acetonitrile, followed by partitioning with salts, avoiding any clean-up step prior the determination by ultra-high performance liquid chromatography/tandem quadrupole mass spectrometry (UHPLC-MS/MS). Validation studies were carried out in wheat, cucumber and red wine as representative matrixes. Recoveries of the spiked samples were in the range between 70 and 120% (with intra-day precision, expressed as relative standard deviation, lower than 20%) for most of the analysed compounds, except picloram and quinmerac. Inter-day precision, expressed as relative standard deviation, was lower than 24%. Limits of quantification were lower than 10μg kg⁻¹ and the developed method was successfully applied to the analysis of organic food products, detecting analytes belonging to the three types of compounds.
authors.affiliation: Group "Analytical Chemistry of Contaminants", Department of Analytical Chemistry, Almeria University, E-04071 Almeria, Spain. rromero@ual.es
authors.forename: R
authors.initials: R
authors.lastname: Romero-González
authors.forename: A
authors.initials: A
authors.lastname: Garrido Frenich
authors.forename: J L
authors.initials: JL
authors.lastname: Martínez Vidal
authors.forename: O D
authors.initials: OD
authors.lastname: Prestes
authors.forename: S L
authors.initials: SL
authors.lastname: Grio
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D009183:Mycotoxins / Q000032:analysis* / Q000302:isolation & purification; D010575:Pesticides / Q000032:analysis* / Q000302:isolation & purification; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D009183:Mycotoxins; D010575:Pesticides