Document Detail


Simultaneous screening and target analytical approach by gas chromatography-quadrupole-mass spectrometry for pesticide residues in fruits and vegetables.
MedLine Citation:
PMID:  20166598     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A full-scan GC/quadrupole/MS method has been developed to perform large-scale screenings of pesticides and simultaneous quantification of 95 target compounds in a single run of 21 min. The screening method was performed by using a deconvolution of the spectrum of the full-scan data files acquired under a retention time locked method. The identification performance of the screening method was evaluated in eight different food matrixes at three different concentrations. The system was equipped with a programmable temperature vaporizing inlet, allowing 10 microL injections. The LOQ in the full-scan mode and linearity were studied for four different matrixes. Correlation coefficients > 0.99 were achieved in all cases, and the LOD was < 20 microg/kg for 80% of the studied pesticides. Maintenance of the system was reduced by the use of a QuickSwap device that provided backflush capabilities by reversing column flow immediately after elution of the last compound of interest. The combined screening and target method was used in the analysis of more than 100 food samples, including a carrot sample from the European Proficiency Test FV 10, with good results.
Authors:
Milagros Mezcua; Maria A Mart?nez-Uroz; Philip L Wylie; Amadeo R Fern?ndez-Alba
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of AOAC International     Volume:  92     ISSN:  1060-3271     ISO Abbreviation:  J AOAC Int     Publication Date:    2009 Nov-Dec
Date Detail:
Created Date:  2010-02-19     Completed Date:  2010-03-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9215446     Medline TA:  J AOAC Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1790-806     Citation Subset:  IM    
Affiliation:
University of Almer?a, Community Reference Laboratory (DG SANCO) for Residues of Pesticides in Fruits and Vegetables, Pesticide Residue Research Group, 04120 La Ca?ada de San Urbano, Almer?a, Spain.
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MeSH Terms
Descriptor/Qualifier:
Automation
Endocrine Disruptors / analysis
Food Analysis / methods*,  standards
Fruit / chemistry*
Gas Chromatography-Mass Spectrometry
Indicators and Reagents
Pesticide Residues / analysis*
Plant Oils / analysis
Vegetables / chemistry*
Chemical
Reg. No./Substance:
0/Endocrine Disruptors; 0/Indicators and Reagents; 0/Pesticide Residues; 0/Plant Oils; 8001-25-0/olive oil

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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