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The Analysis of Coal with the Laser Mass Spectrometer

  • F. J. Vastola
  • A. J. Pirone
  • P. H. Given
  • R. R. Dutcher

Abstract

The laser mass spectrometer has been used to pyrolyze petrographic constituents of coal and record the mass spectrum of the pyrolysis products thus produced. The laser mass spectrometer has been described in detail elsewhere. (1,2) Essentially, it consists of a small, pulsed ruby laser (max. output energy 0.1 J) whose output can be focused on the surface of a coal target located in the ionization chamber of a time-of-flight (TOF) mass spectrometer. A modified microscope optical system is used to focus the laser; irradiated targets can be as small as 10 μm in diameter. Since the target to be irradiated can be viewed through the same microscope system, selected petrographic areas of the coal sample can be pyrolyzed in situ. The spectra of these pyrolysis products can be used to study the chemical composition and structure of coal, or, even more simply, can be used as “fingerprints” to differentiate between the various heterogeneous constituents of coal.

Keywords

Coal Sample Pyrolysis Product Mass Peak Bituminous Coal Coal Rank 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    F. J. Vastola and A. J. Pirone, Preprints, Am. Chem. Soc., Div. of Fuel Chem., Vol. 10, C-53 (1966).Google Scholar
  2. 2.
    F. J. Vastola, A. J. Pirone, and B. E. Knox, “Proc. 14th Ann. Conf. on Mass Spectrometry and Allied Topics,” ASTM Committee, E-14, Philadelphia, Pennsylvania (1966), p. 78.Google Scholar
  3. 3.
    A. G. Sharkey, Jr., J. L. Shultz, and R. A. Friedel, in: “Coal Science” (R. F. Gould, ed.), Adv. Chem. Series No. 55, American Chemical Society, Washington, D.C. (1966).Google Scholar

Copyright information

© Plenum Press, New York 1970

Authors and Affiliations

  • F. J. Vastola
    • 1
  • A. J. Pirone
    • 1
  • P. H. Given
    • 1
  • R. R. Dutcher
    • 1
  1. 1.College of Earth and Mineral SciencesPennsylvania State UniversityUniversity ParkUSA

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