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Comparison of Atmospheric Pressure Chemical Ionization and Field Ionization Mass Spectrometry for the Analysis of Large Saturated Hydrocarbons.
Jin, Chunfen; Viidanoja, Jyrki; Li, Mingzhe; Zhang, Yuyang; Ikonen, Elias; Root, Andrew; Romanczyk, Mark; Manheim, Jeremy; Dziekonski, Eric; Kenttämaa, Hilkka I.
Afiliación
  • Jin C; Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States.
  • Viidanoja J; Technology Centre, Neste Corporation , P.O. Box 310, FI-06101 Porvoo, Finland.
  • Li M; Technology Centre, Neste Corporation , P.O. Box 310, FI-06101 Porvoo, Finland.
  • Zhang Y; Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States.
  • Ikonen E; Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States.
  • Root A; Technology Centre, Neste Corporation , P.O. Box 310, FI-06101 Porvoo, Finland.
  • Romanczyk M; MagSol , Tuhkanummenkuja 2, FI-00970 Helsinki, Finland.
  • Manheim J; Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States.
  • Dziekonski E; Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States.
  • Kenttämaa HI; Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States.
Anal Chem ; 88(21): 10592-10598, 2016 11 01.
Article en En | MEDLINE | ID: mdl-27700066
Direct infusion atmospheric pressure chemical ionization mass spectrometry (APCI-MS) was compared to field ionization mass spectrometry (FI-MS) for the determination of hydrocarbon class distributions in lubricant base oils. When positive ion mode APCI with oxygen as the ion source gas was employed to ionize saturated hydrocarbon model compounds (M) in hexane, only stable [M - H]+ ions were produced. Ion-molecule reaction studies performed in a linear quadrupole ion trap suggested that fragment ions of ionized hexane can ionize saturated hydrocarbons via hydride abstraction with minimal fragmentation. Hence, APCI-MS shows potential as an alternative of FI-MS in lubricant base oil analysis. Indeed, the APCI-MS method gave similar average molecular weights and hydrocarbon class distributions as FI-MS for three lubricant base oils. However, the reproducibility of APCI-MS method was found to be substantially better than for FI-MS. The paraffinic content determined using the APCI-MS and FI-MS methods for the base oils was similar. The average number of carbons in paraffinic chains followed the same increasing trend from low viscosity to high viscosity base oils for the two methods.
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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Chem Año: 2016 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Anal Chem Año: 2016 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos