Journal
FOOD CHEMISTRY
Volume 139, Issue 1-4, Pages 482-487Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.01.013
Keywords
Organic production; Authentication; Pesticide residue control; Gas chromatography; Tandem quadrupole mass spectrometry
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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. (C) 2013 Elsevier Ltd. All rights reserved.
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