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Unexpected dimerization of isoprene in a gas chromatography inlet. A study by gas chromatography/mass spectrometry coupling

dc.rights.licenseopen
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorESTEVEZ, Yannick
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorGARDRAT, Christian
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorBERTHELOT, Karine
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorGRAU, Etienne
IDREF: 187909261
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorDE JÉSO, Bernard
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorOUARDAD, Samira
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 1 LCPO : Polymerization Catalyses & Engineering
dc.contributor.authorPERUCH, Frédéric
IDREF: 152900748
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2014
dc.identifier.issn0021-9673
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/19779
dc.description.abstractEnDuring analysis of pure isoprene by gas chromatography/mass spectrometry (GC-MS) using a programmed temperature vaporization (PTV) inlet, the presence of several isoprene dimers was detected in the total ion chromatograms (TICs). This study intends to determine the part of the instrument where dimerization occurs and the relative importance of the dimer amounts under different experimental conditions. The reference thermal dimerization of isoprene gives four six-membered cyclic dimers and two eight-membered ones. In all samples containing different amounts of freshly distilled isoprene, only peaks corresponding to the former appeared in TICs. For the same temperature, their amounts increase as the concentration of injected isoprene increases. The main products are diprene (from 80 to 100%) of the total dimers and dipentene (from 1 to 14%). The sum of the two other dimers is never higher than 6%. In conclusion, isomeric dimers are produced through a dimerization in the inlet. No dimerization of isoprene occurs in the mass spectrometer source. Then care is needed when analyzing terpenic compounds in the presence of isoprene by GC-MS because structures, retention times and mass spectra of diprene and dipentene are close.
dc.language.isoen
dc.publisherElsevier
dc.subject.enGC–MS
dc.subject.enGas chromatography inlet
dc.subject.enDimerization
dc.subject.enIsoprene
dc.title.enUnexpected dimerization of isoprene in a gas chromatography inlet. A study by gas chromatography/mass spectrometry coupling
dc.typeArticle de revue
dc.identifier.doi10.1016/j.chroma.2014.01.035
dc.subject.halChimie/Polymères
bordeaux.journalJournal of Chromatography A
bordeaux.page133-138
bordeaux.volume1331
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-01368973
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01368973v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Chromatography%20A&rft.date=2014&rft.volume=1331&rft.spage=133-138&rft.epage=133-138&rft.eissn=0021-9673&rft.issn=0021-9673&rft.au=ESTEVEZ,%20Yannick&GARDRAT,%20Christian&BERTHELOT,%20Karine&GRAU,%20Etienne&DE%20J%C3%89SO,%20Bernard&rft.genre=article


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