Analysis of permethylated glycosphingolipids by desorption chemical ionization/triple-quadrupole tandem mass spectrometry

1992 ◽  
Vol 21 (8) ◽  
pp. 391-396 ◽  
Author(s):  
J. S. Duh ◽  
G. R. Her
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Chemical Ionization ◽  
Tandem Mass ◽  
Triple Quadrupole ◽  
Desorption Chemical Ionization

Characterization of perfluoropolyethers by desorption chemical ionization and tandem mass spectrometry

1993 ◽  
Vol 65 (8) ◽  
pp. 970-975 ◽  
Author(s):  
Alessandro. Guarini ◽  
Gianfranco. Guglielmetti ◽  
Marco. Vincenti ◽  
Pierantonio. Guarda ◽  
Giuseppe. Marchionni
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Chemical Ionization ◽  
Tandem Mass ◽  
Desorption Chemical Ionization

scholarly journals Quantification of hydroxyacetone and glycolaldehyde using chemical ionization mass spectrometry

2014 ◽  
Vol 14 (8) ◽  
pp. 4251-4262 ◽  
Author(s):  
J. M. St. Clair ◽  
K. M. Spencer ◽  
M. R. Beaver ◽  
J. D. Crounse ◽  
F. Paulot ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Chemical Ionization ◽  
Ionization Mass Spectrometry ◽  
Chemical Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Tandem Mass ◽  
Triple Quadrupole ◽  
Direct Separation ◽  
In Situ Detection

Chemical ionization mass spectrometry (CIMS) enables online, rapid, in situ detection and quantification of hydroxyacetone and glycolaldehyde. Two different CIMS approaches are demonstrated employing the strengths of single quadrupole mass spectrometry and triple quadrupole (tandem) mass spectrometry. Both methods are generally capable of the measurement of hydroxyacetone, an analyte with known but minimal isobaric interferences. Tandem mass spectrometry provides direct separation of the isobaric compounds glycolaldehyde and acetic acid using distinct, collision-induced dissociation daughter ions. The single quadrupole CIMS measurement of glycolaldehyde was demonstrated during the ARCTAS-CARB (Arctic Research of the Composition of the Troposphere from Aircraft and Satellites - California Air Resources Board) 2008 campaign, while triple quadrupole CIMS measurements of glycolaldehyde and hydroxyacetone were demonstrated during the BEARPEX (Biosphere Effects on Aerosols and Photochemistry Experiment) 2009 campaign. Enhancement ratios of glycolaldehyde in ambient biomass-burning plumes are reported for the ARCTAS-CARB campaign. BEARPEX observations are compared to simple photochemical box model predictions of biogenic volatile organic compound oxidation at the site.

scholarly journals Analysis of Additives in Polyethylene with Desorption Chemical Ionization/Tandem Mass Spectrometry

1993 ◽  
Vol 47 (6) ◽  
pp. 844-851 ◽  
Author(s):  
S. W. Chen ◽  
G. R. Her
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Mass Spectra ◽  
Chemical Ionization ◽  
Collision Induced Dissociation ◽  
Low Molecular Weight ◽  
Tandem Mass ◽  
Desorption Chemical Ionization ◽  
Great Confidence ◽  
Ionization Tandem Mass Spectrometry

Desorption chemical ionization with ammonia as the reagent gas in combination with tandem mass spectrometry is described for the analysis of additives in polyethylene. The additives were extracted with toluene and then analyzed directly by desorption chemical ionization and tandem mass spectrometry. With ammonia as the reagent gas, mass spectra of additives were found to contain intense pseudomolecular ions with very little fragmentation. In addition, low-molecular-weight polyethylene molecules extracted with the additives were barely detectable, and thus there was less likelihood of interference. Collision-induced dissociation of the pseudomolecular ions provided great confidence in the assignment of additives.

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