ESI SINGLE QUADRUPOLE MASS SPECTROMETRIC INVESTIGATION OF POLYHYDROXY ACIDS
Identifieur interne : 000A96 ( Main/Exploration ); précédent : 000A95; suivant : 000A97ESI SINGLE QUADRUPOLE MASS SPECTROMETRIC INVESTIGATION OF POLYHYDROXY ACIDS
Auteurs : Klaus Fischer [Allemagne] ; Susanne Höffler [Allemagne] ; Axel Meyer [Allemagne]Source :
- Analytical letters [ 0003-2719 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Spectrométrie masse, Ionisation chimique, Electrospray, Injection en écoulement, Activation par collision, Sélectivité, Identification, Cible, pH, Conversion, Libération, Carbone, Produit, Dissociation, Acide carboxylique, Sucre, Lactone, Dioxyde de carbone, Acide gluconique, Acide aldonique, Acide uronique.
- Wicri :
English descriptors
- KwdEn :
Abstract
ESI-MS spectra were recorded with a FIA-MS system under CID conditions for 19 polyhydroxy carboxylic acids to assess the analytical selectivity of single quadrupole MS and to evaluate its suitability for the qualitative identification of the target compounds. Suited ESI operation conditions were defined for several sugar acids and their lactones and the pH dependence of the respective acid-lactone conversion was investigated. Besides the common neutral mass losses of H2O and CO2 specific mass losses, presumably belonging to the release of small carbon chain units, were established for isocitric and gluconic acids. A product ion with mlz 75 was part of the MS spectra of all aldonic acids, potentially indicating this structural subgroup of sugar acids. The spectra of other sugar acids and of tartaric, isocitric and shikimic acids had a product ion with mlz 73 in common. The results reveal that the CID mass spectra of several hydroxy acids show characteristic product ion patterns suited for a selective analyte identification.
Affiliations:
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aldonic acid</term>
<term>Carbon</term>
<term>Carbon dioxide</term>
<term>Carboxylic acid</term>
<term>Chemical ionization</term>
<term>Collisional activation</term>
<term>Conversion</term>
<term>Dissociation</term>
<term>Electrospray</term>
<term>Flow injection</term>
<term>Gluconic acid</term>
<term>Identification</term>
<term>Lactone</term>
<term>Mass spectrometry</term>
<term>Product</term>
<term>Release</term>
<term>Selectivity</term>
<term>Sugar</term>
<term>Target</term>
<term>Uronic acid</term>
<term>pH</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Spectrométrie masse</term>
<term>Ionisation chimique</term>
<term>Electrospray</term>
<term>Injection en écoulement</term>
<term>Activation par collision</term>
<term>Sélectivité</term>
<term>Identification</term>
<term>Cible</term>
<term>pH</term>
<term>Conversion</term>
<term>Libération</term>
<term>Carbone</term>
<term>Produit</term>
<term>Dissociation</term>
<term>Acide carboxylique</term>
<term>Sucre</term>
<term>Lactone</term>
<term>Dioxyde de carbone</term>
<term>Acide gluconique</term>
<term>Acide aldonique</term>
<term>Acide uronique</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Carbone</term>
<term>Sucre</term>
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<front><div type="abstract" xml:lang="en">ESI-MS spectra were recorded with a FIA-MS system under CID conditions for 19 polyhydroxy carboxylic acids to assess the analytical selectivity of single quadrupole MS and to evaluate its suitability for the qualitative identification of the target compounds. Suited ESI operation conditions were defined for several sugar acids and their lactones and the pH dependence of the respective acid-lactone conversion was investigated. Besides the common neutral mass losses of H<sub>2</sub>
O and CO<sub>2</sub>
specific mass losses, presumably belonging to the release of small carbon chain units, were established for isocitric and gluconic acids. A product ion with mlz 75 was part of the MS spectra of all aldonic acids, potentially indicating this structural subgroup of sugar acids. The spectra of other sugar acids and of tartaric, isocitric and shikimic acids had a product ion with mlz 73 in common. The results reveal that the CID mass spectra of several hydroxy acids show characteristic product ion patterns suited for a selective analyte identification.</div>
</front>
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<affiliations><list><country><li>Allemagne</li>
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<settlement><li>Trèves (Allemagne)</li>
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<orgName><li>Université de Trèves</li>
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<tree><country name="Allemagne"><region name="Rhénanie-Palatinat"><name sortKey="Fischer, Klaus" sort="Fischer, Klaus" uniqKey="Fischer K" first="Klaus" last="Fischer">Klaus Fischer</name>
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<name sortKey="Hoffler, Susanne" sort="Hoffler, Susanne" uniqKey="Hoffler S" first="Susanne" last="Höffler">Susanne Höffler</name>
<name sortKey="Meyer, Axel" sort="Meyer, Axel" uniqKey="Meyer A" first="Axel" last="Meyer">Axel Meyer</name>
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