title: Pesticide residues determination in Polish organic crops in 2007-2010 applying gas chromatography-tandem quadrupole mass spectrometry.
abstract: A sensitive, accurate and reliable multiresidue method based on the application of gas chromatography-tandem quadrupole mass spectrometry (GC-QqQ-MS/MS) has been established for screening, identification and quantification of a large number of pesticide residues in produce. The method was accredited in compliance with PN-EN ISO/IEC 17025:2005 standard and it was operated under flexible scope as PB-11 method. The flexible scope of accreditation allowed for minor modifications and extension of the analytical scope while using the same analytical technique. During the years 2007-2010, the method was used for the purpose of verification of organic crop production by multiresidue analysis for the presence of pesticides. A total of 528 samples of differing matrices such as fruits, vegetables, cereals, plant leaves and other green parts were analysed, of which 4.4% samples contained pesticide residues above the threshold value of 0.01 mg/kg. A total of 20 different pesticide residues were determined in the samples.
authors.affiliation: Institute of Plant Protection-National Research Institute, Władysława Węgorka 20, 60-318 Poznań, Poland. s_walorczyk@tlen.pl
authors.forename: Stanisław
authors.initials: S
authors.lastname: Walorczyk
authors.forename: Dariusz
authors.initials: D
authors.lastname: Drożdżyński
authors.forename: Jolanta
authors.initials: J
authors.lastname: Kowalska
authors.forename: Dorota
authors.initials: D
authors.lastname: Remlein-Starosta
authors.forename: Andrzej
authors.initials: A
authors.lastname: Ziółkowski
authors.forename: Monika
authors.initials: M
authors.lastname: Przewoźniak
authors.forename: Bogusław
authors.initials: B
authors.lastname: Gnusowski
mesh_terms: D002523:Edible Grain / Q000737:chemistry*; D005506:Food Contamination / Q000032:analysis*; D058870:Food, Organic / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010573:Pesticide Residues / Q000032:analysis*; D011044:Poland; D053719:Tandem Mass Spectrometry / Q000379:methods; D014675:Vegetables / Q000737:chemistry*
chemical_list: D010573:Pesticide Residues