Field-ionization mass spectrometry, which produces fragmentation-free mass spectra, is being applied to the analysis of coal-liquefaction products. Using a new highly efficient and sturdy field-ionization source, samples of various coal-liquefaction products have been successfully analysed and their
Liquefaction behaviour of coals: a study by field ionization mass spectrometry and pattern recognition
โ Scribed by Hans-Rolf Schulten; Norbert Simmleit; Anna Marzec
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 790 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The field ionization mass spectrum of diethylamhe on a 5 pm activated wire at 300 K yields surface product ions like protonated molecular ions and doubly charged ions as well as gas phase ions like parent minus CH, group. Variations of the reaction rate as a function of the decomposition times in th
Deuterated reagent chemical ionization $3) mass spectrometry was used to identify isomeric oxygen-, nitrogen-and sulphur-containing species in a phenolic fraction from the liquefaction oflignite, a base fraction from the gasification of lignite and the headspace of the liquefaction of pine sawdust.
Capillary electrophoresis (CE) allows the observation of the opposite affinities of the enantiomers of (ยฑ)-verapamil [2-isopropyl-2,8-bis(3,4-dimethoxyphenyl)-6-methyl-6-azaoctannitrile, VP] toward โค-cyclodextrin (โค-CD) and heptakis(2,3,6-tri-Omethyl)-โค-CD (TM-โค-CD). In addition, in the presence of
The mechanism of the thermal degradation of polystyrene was studied by pyrolysis-gas chromatography and pyrolysis-field ionization mass spectrometry, using a block copolymer of ordinary and perdeuterated styrene [poly(styrene-b-styrene-ds) ]. The main degradation products were monomers, dimers and t