On-line, mass spectrometric determination of ammonia from oil shale pyrolysis using isobutane chemical ionization

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Publication Type report
Research Institute Institute for Clean and Secure Energy (ICSE)
Author Crawford, Richard W.; Coburn, Thomas T.; Miller, Philip E.; Oh, Myongsook S.
Title On-line, mass spectrometric determination of ammonia from oil shale pyrolysis using isobutane chemical ionization
Date 1988-03
Description Ammonia is the predominant nitrogen-containing species formed during the pyrolysis of oil shale. An on-line method of determining ammonia was developed to study kinetics and chemistry of formation and evolution. While fragmentation of water interferes with electron ionization mass spectrometry, chemical ionization mass spectrometry using isobutane reagent gas gave excellent sensitivity and selectivity for ammonia. All transfer and sampling lines from the retort were heated to ~150°C. We successfully measured ammonia evolution from various oil shales retorted under different conditions, including steam retorting.
Type Text
Publisher Lawrence Livermore National Laboratory
Bibliographic Citation Crawford, R. W., Coburn, T. T., Miller, P. E., & Oh, M. S. (1988). On-line, mass spectrometric determination of ammonia from oil shale pyrolysis using isobutane chemical ionization. Preprint: UCRL-97854, Rev. 1.
ARK ark:/87278/s65j0ffs
Setname ir_eua
ID 214629
Reference URL https://collections.lib.utah.edu/ark:/87278/s65j0ffs
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