Tandem Mass Spectrometric Analysis (MS/MS) of Jet Fuels. Part 2. Quantitative Aspects of Direct MS Analysis.
Final rept. 1 Jul-1 Sep 84,
GEO-CENTERS INC NEWTON UPPER FALLS MA
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Quantitative aspects of the direct mass spectrometry MS determination of hydrocarbon classes in jet fuels are discussed. Low energy ionization and signal averaging over the complete sample vaporization process are found to be important instrument parameters for direct MS analysis of liquids with boiling ranges to more than 250 C and high naphthenic compound content. The derivation of class standard mixtures from complex fuel samples by liquid chromatography LC and computer extraction techniques is shown to be a viable alternative to the difficult and costly production of appropriate standards from individual compounds. As discussed in this report, advanced computer techniques in pattern recognition and multivariate statistical analysis provide powerful options for data processing beyond the procedures of ASTM method D2789-81 for gasoline analysis.
- Industrial Chemistry and Chemical Processing
- Atomic and Molecular Physics and Spectroscopy