Combination of QuEChERS and DLLME for GC-MS determination of pesticide residues in orange samples.
Identifieur interne : 000F12 ( Main/Exploration ); précédent : 000F11; suivant : 000F13Combination of QuEChERS and DLLME for GC-MS determination of pesticide residues in orange samples.
Auteurs : Mária Andraš Ková ; Svetlana Hrouzková ; Sara C. CunhaSource :
- Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment [ 1944-0057 ] ; 2013.
Descripteurs français
- Wicri :
- geographic : Portugal.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Endocrine Disruptors, Pesticide Residues.
- chemical : Drug Combinations.
- geographic : Portugal.
- analysis : Food Contamination.
- chemistry : Citrus sinensis.
- methods : Gas Chromatography-Mass Spectrometry, Liquid Phase Microextraction.
- Humans.
Abstract
A new method combining QuEChERS (quick, easy, cheap, effective, rugged and safe) and DLLME (dispersive liquid-liquid microextraction) followed by gas chromatography-mass spectrometry with selected ion monitoring (SIM) was developed for the simultaneous determination of 19 pesticides from nine chemical groups exhibiting or suspected to exhibit endocrine-disrupting properties in orange samples. Acetonitrile extract obtained from QuEChERS extraction was used for DLLME as dispersive solvent and carbon tetrachloride as extractive solvent to increase the enrichment factor of the extraction procedure. The effect of several extraction parameters, such as volume extract achieved by the QuEChERS method and subsequently used for DLLME, selection of extractive solvent and its volume, was tested. Under optimum conditions, good linearity, satisfactory recoveries and repeatability were obtained. Limits of quantification (LOQs) achieved (ranging from 0.02 to 47 ng/g) were below the maximum residue limits established by the European Union. The proposed method was applied to the monitoring of pesticide residue levels in oranges commercialised in Portugal.
DOI: 10.1080/19440049.2012.736029
PubMed: 23092184
Affiliations:
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Le document en format XML
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<author><name sortKey="Hrouzkova, Svetlana" sort="Hrouzkova, Svetlana" uniqKey="Hrouzkova S" first="Svetlana" last="Hrouzková">Svetlana Hrouzková</name>
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<series><title level="j">Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment</title>
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<term>Endocrine Disruptors (analysis)</term>
<term>Food Contamination (analysis)</term>
<term>Gas Chromatography-Mass Spectrometry (methods)</term>
<term>Humans</term>
<term>Liquid Phase Microextraction (methods)</term>
<term>Pesticide Residues (analysis)</term>
<term>Portugal</term>
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<term>Liquid Phase Microextraction</term>
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<front><div type="abstract" xml:lang="en">A new method combining QuEChERS (quick, easy, cheap, effective, rugged and safe) and DLLME (dispersive liquid-liquid microextraction) followed by gas chromatography-mass spectrometry with selected ion monitoring (SIM) was developed for the simultaneous determination of 19 pesticides from nine chemical groups exhibiting or suspected to exhibit endocrine-disrupting properties in orange samples. Acetonitrile extract obtained from QuEChERS extraction was used for DLLME as dispersive solvent and carbon tetrachloride as extractive solvent to increase the enrichment factor of the extraction procedure. The effect of several extraction parameters, such as volume extract achieved by the QuEChERS method and subsequently used for DLLME, selection of extractive solvent and its volume, was tested. Under optimum conditions, good linearity, satisfactory recoveries and repeatability were obtained. Limits of quantification (LOQs) achieved (ranging from 0.02 to 47 ng/g) were below the maximum residue limits established by the European Union. The proposed method was applied to the monitoring of pesticide residue levels in oranges commercialised in Portugal.</div>
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<tree><noCountry><name sortKey="Andras Kova, Maria" sort="Andras Kova, Maria" uniqKey="Andras Kova M" first="Mária" last="Andraš Ková">Mária Andraš Ková</name>
<name sortKey="Cunha, Sara C" sort="Cunha, Sara C" uniqKey="Cunha S" first="Sara C" last="Cunha">Sara C. Cunha</name>
<name sortKey="Hrouzkova, Svetlana" sort="Hrouzkova, Svetlana" uniqKey="Hrouzkova S" first="Svetlana" last="Hrouzková">Svetlana Hrouzková</name>
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