期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1217, 期 5, 页码 648-659出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2009.11.098
关键词
Pesticide residues; Fruit; Vegetable; QuEChERS; Ultra-high-performance liquid; chromatography; Time-of-flight mass spectrometry
资金
- Ministry of Education, Youth and Sports, Czech Republic [MSM 6046137305]
- Ministry of Agriculture, Czech Republic [NAZV QH71164]
In this study, the potential of ultra-high-performance liquid chromatography coupled with the time-of-flight mass spectrometry (UHPLC-TOF MS) to enable rapid and comprehensive analysis of 212 pesticide residues in QuEChERS extracts obtained from four plant matrices has been investigated. Method optimization is discussed in detail. In addition to molecular adducts, also fragment ions were provided for all target pesticides, thus obtaining at least three identification points required by European Decision 2002/657/EC was achieved. To get maximum information on analytes present in the extracts, each sample was examined within two injections, the first in a positive and the next one in a negative ionization mode. Under UHPLC conditions, both analyses were completed within 24 min. For more than 96% of pesticides involved in this study, the limit of quantification was <= 10 mu g/kg. As a part of the work, strategy enabling screening of non-target pesticides and their metabolites is demonstrated on analysis of real-life samples. (C) 2009 Elsevier B.V. All rights reserved.
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