Fast-atom bombardment and chemical ionization/fast-atom bombardment mass spectrometry of lubricants
Fast-atom bombardment mass spectrometry (FABMS) is used for the direct, rapid, and semiquantitative characterization of neat synthetic base oils and their additives. Both positive and negative ion spectra are investigated, and while the negative ion spectra give less structural information, they are more useful for profiling complex mixtures because of their simplicity. Lubricant additives, present at the low percent to parts-per-thousand levels, can be identified by their molecular ions using FABMS on the neat lubricant. The related technique, chemical ionization/fast-atom bombardment mass spectrometry, is shown to enhance significantly the abundances of homologous tetraester molecular ions in a synthetic base oil. This resulting molecular ion enhancement permits tandem mass spectrometric methods to be used to determine the isomer composition of each homologue. Several applications of FABMS on lubricants are discussed including the use of computer reference FABMS spectra for mixture analysis and the potential use of FABMS in tribochemistry.
- Research Organization:
- Naval Research Lab., Washington, DC
- OSTI ID:
- 5280423
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:12; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
The investigation of radiopharmaceutical components by fast atom bombardment mass spectrometry: the identification of Tc-HIDA and the epimers of Tc-CO2DADS
Fast atom bombardment in mass spectrometry: method and applications
Related Subjects
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ADDITIVES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
INFORMATION
ION MICROPROBE ANALYSIS
IONIZATION
ISOMERS
LUBRICANTS
MASS SPECTROSCOPY
MICROANALYSIS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
ORGANIC COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
TRACE AMOUNTS