Laser desorption mass spectrometry: Technical limitations, fundamentals, and application to coal

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Objective of this study is to assess scope and limitations of laser desorption (LD) and matrix-assisted laser desorption (MALDI) as applied to coals. LD and MALDI mass spectrometry are increasingly used to detect intact molecular species, such as proteins with masses from 1000 to 100,000 amu and beyond. MALDI is also being used for high molecular weight polymers. A good example, related to coal-type systems, is the report on lignin mass spectrometry by MALDI. The mass spectrum shows a wide molecular distribution of several hundred to larger than 16000, with the center of gravity of the distribution around 2600. Results ... continued below

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5 p.

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Hunt, J.E. & Winans, R.E. December 31, 1995.

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Description

Objective of this study is to assess scope and limitations of laser desorption (LD) and matrix-assisted laser desorption (MALDI) as applied to coals. LD and MALDI mass spectrometry are increasingly used to detect intact molecular species, such as proteins with masses from 1000 to 100,000 amu and beyond. MALDI is also being used for high molecular weight polymers. A good example, related to coal-type systems, is the report on lignin mass spectrometry by MALDI. The mass spectrum shows a wide molecular distribution of several hundred to larger than 16000, with the center of gravity of the distribution around 2600. Results are interpreted in terms of oligomeric lignin molecules. Thus, if there are indeed large molecular species in a polymeric content in coals or coal extracts, MALDI is an attractive technique.

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5 p.

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OSTI as DE96005239

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  • 8. international conference on coal science, Oviedo (Spain), 10-15 Sep 1995

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  • Other: DE96005239
  • Report No.: ANL/CHM/CP--84664
  • Report No.: CONF-950963--5
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 205645
  • Archival Resource Key: ark:/67531/metadc665955

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 14, 2015, 4:53 p.m.

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Hunt, J.E. & Winans, R.E. Laser desorption mass spectrometry: Technical limitations, fundamentals, and application to coal, article, December 31, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc665955/: accessed July 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.