Zobrazeno 1 - 10 of 183 pro vyhledávání: '"Allan Maccoll"'
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Low energy, low temperature mass spectra. Part 16. The predominance of peaks arising from single and double McLafferty rearrangements in the mass spectra of ketoximes
Autor: Richard D. Bowen, Allan Maccoll
Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 122:337-348
The partial mass spectra of 11 ketoximes [C n H 2 n+ 1 (C m H 2m+ 1 )C  NOH, ( n , m = 1–4)] recorded at an ionizing electron energy of about 12eV and a source temperature of about 350K are reported and discussed. Strong molecular ion signals ar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::475d3f54f21e2b45b6537d6d34f0606f
https://doi.org/10.1016/0168-1176(92)87024-9
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4
Low-energy, low-temperature mass spectra. Part 15: Electron ionization mass spectra of some monoterpene hydrocarbons
Autor: Joseph J. Brophy, Allan Maccoll
Publikováno v: Organic Mass Spectrometry. 27:1042-1051
The electron ionization mass spectra of 19 monoterpenes are reported at 70 eV and ca. 500 K and at 12 eV and ca. 350 K. The former agree well with those published previously, whereas the latter show simplification, especially at low m/z values. Tempe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1bbbaacc6142cb84a12ad653a71948df
https://doi.org/10.1002/oms.1210271014
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5
Mass spectra of alkenyl methyl ethers
Autor: Richard D. Bowen, Allan Maccoll, Steven R. Thomas, Keith R. Jennings, Andrew D. Wright
Publikováno v: Organic Mass Spectrometry. 26:421-437
Electron impact ionization mass spectra of numerous alkenyl methyl ethers CnH2n-1OCH3 (n = 3–6) recorded under normal (4 kV, 70 eV, 175°C) and low-energy, low-temperature (8 kV, 12 eV, 75 °C) conditions are reported. The influence of the position
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::298c0ca60732583c1836b4bb44dac6ca
https://doi.org/10.1002/oms.1210260511
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6
Low-Energy, low-temperature mass spectra. 14—A simple model for the rate coefficient
Autor: Allan Maccoll
Publikováno v: Organic Mass Spectrometry. 26:235-240
The Kassel quantum model for the unimolecular rate coefficient is applied to mass spectral fragmentation. The inadequacy of the classical model is emphasized. The kinetic effect, the competitive effect and the thermal effect are discussed. Finally, t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94875cdc97733be3afd81ec349928331
https://doi.org/10.1002/oms.1210260410
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8
Low energy, low temperature mass spectra part 13. the alkynes
Autor: J.L. Courtneidge, Alwyn G. Davies, Allan Maccoll
Publikováno v: International Journal of Mass Spectrometry and Ion Processes. 101:167-179
The low energy, low temperature mass spectra of a number of linear alk-1-ynes (ethyne to octyne) are reported and discussed, where possible, in terms of ion thermochemistry. The spectra of hex-3-yne and hept-3-yne, together with those of the four lin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aaf95942d9d3548cf15419b0596940a2
https://doi.org/10.1016/0168-1176(90)87009-6
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10
Mass Spectrometry, Historical Perspective*
Autor: Allan Maccoll
The development of mass spectrometry is reviewed from a historical point of view. Some details of the various instrumental methods used are presented.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::519cde4fbef53ee9b4b596ee41183f08
https://doi.org/10.1016/b978-0-12-374413-5.00197-4
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