OrangerV1, Main, Exploration, bibRecord, 002894

Multiple-stage mass spectrometric analysis of six pesticides in oranges by liquid chromatography-atmospheric pressure chemical ionization-ion trap mass spectrometry.

Identifieur interne : 002894 ( Main/Exploration ); précédent : 002893; suivant : 002895

Multiple-stage mass spectrometric analysis of six pesticides in oranges by liquid chromatography-atmospheric pressure chemical ionization-ion trap mass spectrometry.

Auteurs : Cristina Blasco [Espagne] ; Guillermina Font ; Yolanda Pic

Source :

Journal of chromatography. A [ 0021-9673 ] ; 2004.

RBID : pubmed:15330097

English descriptors

KwdEn :
- Atmospheric Pressure, Chromatography, Liquid (methods), Citrus sinensis (chemistry), Mass Spectrometry (methods), Pesticides (analysis), Reproducibility of Results, Sensitivity and Specificity.
MESH :
- chemical , analysis : Pesticides.
- chemistry : Citrus sinensis.
- methods : Chromatography, Liquid, Mass Spectrometry.
- Atmospheric Pressure, Reproducibility of Results, Sensitivity and Specificity.

Abstract

Six pesticides were determined by liquid chromatography (LC) with positive ion (PI) atmospheric pressure chemical ionization quadrupole ion-trap tandem mass spectrometry (APCI-MS-MS). Ion fragmentation was studied by MS, MS2 and MS3. Fragmentation of the pesticides produced ions formed by various losses from the side-chains and through heterocyclic ring opening, but without any common fragmentation pathway. Multiple reaction monitoring (MRM) of MS, MS2 and MS3 was used to identify and quantify the pesticides. The samples were extracted with ethyl acetate and dried over anhydrous sodium sulfate. Comparison of the three MS modes showed that MS3 is slightly less sensitive but much more selective. Recoveries from oranges were 72-94% at the limit of quantification (LOQ) level for all MS modes. The LOQs were 0.001-0.3 mg kg(-1) quantifying by means of the MS3 product ion. The method was used to analyse a number of orange samples. This is the first report on using MS3 product ions for quantification of pesticide residues.

PubMed: 15330097

Affiliations:

Espagne

Le document en format XML

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<author><name sortKey="Blasco, Cristina" sort="Blasco, Cristina" uniqKey="Blasco C" first="Cristina" last="Blasco">Cristina Blasco</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratori de Bromatologia i Toxicologia, Facultat de Farmàcia, Universitat de Valencia, Av Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain.</nlm:affiliation>
<country xml:lang="fr">Espagne</country>
<wicri:regionArea>Laboratori de Bromatologia i Toxicologia, Facultat de Farmàcia, Universitat de Valencia, Av Vicent Andrés Estellés s/n, 46100 Burjassot, València</wicri:regionArea>
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<author><name sortKey="Font, Guillermina" sort="Font, Guillermina" uniqKey="Font G" first="Guillermina" last="Font">Guillermina Font</name>
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<author><name sortKey="Pic, Yolanda" sort="Pic, Yolanda" uniqKey="Pic Y" first="Yolanda" last="Pic">Yolanda Pic</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Multiple-stage mass spectrometric analysis of six pesticides in oranges by liquid chromatography-atmospheric pressure chemical ionization-ion trap mass spectrometry.</title>
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<series><title level="j">Journal of chromatography. A</title>
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<term>Pesticides (analysis)</term>
<term>Reproducibility of Results</term>
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<front><div type="abstract" xml:lang="en">Six pesticides were determined by liquid chromatography (LC) with positive ion (PI) atmospheric pressure chemical ionization quadrupole ion-trap tandem mass spectrometry (APCI-MS-MS). Ion fragmentation was studied by MS, MS2 and MS3. Fragmentation of the pesticides produced ions formed by various losses from the side-chains and through heterocyclic ring opening, but without any common fragmentation pathway. Multiple reaction monitoring (MRM) of MS, MS2 and MS3 was used to identify and quantify the pesticides. The samples were extracted with ethyl acetate and dried over anhydrous sodium sulfate. Comparison of the three MS modes showed that MS3 is slightly less sensitive but much more selective. Recoveries from oranges were 72-94% at the limit of quantification (LOQ) level for all MS modes. The LOQs were 0.001-0.3 mg kg(-1) quantifying by means of the MS3 product ion. The method was used to analyse a number of orange samples. This is the first report on using MS3 product ions for quantification of pesticide residues.</div>
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Multiple-stage mass spectrometric analysis of six pesticides in oranges by liquid chromatography-atmospheric pressure chemical ionization-ion trap mass spectrometry.

Multiple-stage mass spectrometric analysis of six pesticides in oranges by liquid chromatography-atmospheric pressure chemical ionization-ion trap mass spectrometry.

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

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