期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1218, 期 11, 页码 1477-1485出版社
ELSEVIER
DOI: 10.1016/j.chroma.2011.01.034
关键词
Pesticides; Biopesticides; Mycotoxins; Simultaneous extraction; UHPLC-MS/MS
资金
- Spanish Ministry of Science and Innovation-FEDER [AGL2006-12127-C02-01, CTQ2009-07686]
- Spanish Ministry of Education and Science-EFS
- CAPES-Brazil [1849-0903]
- Spanish Agency for International Development Cooperation (AECID) (Spanish Ministry of Foreign Affairs and Cooperation)
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 10 mu g 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. (C) 2011 Elsevier B.V. All rights reserved.
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