Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 303, Issue 2-3, Pages 137-146Publisher
ELSEVIER
DOI: 10.1016/j.ijms.2011.01.024
Keywords
Absolute photoionization cross-sections; Nitrogenous compounds; VUV photoionization; Mass spectrometry
Funding
- Chinese Academy of Sciences and Natural Science Foundation of China [50925623]
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The absolute photoionization cross-sections of 24 nitrogenous compounds were measured in the photon energy range from their respective ionization thresholds to 11.5 eV, including n-propylamine, isopropylamine, n-butylamine,2-butylamine,iso-butylamine, tert-butylamine, diethylamine, dibutylamine, triethylamine, aniline, benzylamine, n-methylaniline, cyclohexanamine, nitromethane, nitroethane, nitropropane, nitrobenzene, pyrrole, pyridine, pyrrolidine, morpholine, N,N-dimethylethanolamine, benzonitrile and benzeneacetonitrile. The experiments were performed by photoionization mass spectrometry with tunable synchrotron vacuum ultraviolet (VUV) light as an ionization source. Binary-liquid-mixtures of investigated and standard species were used in this measurement. As a good solvent, benzene was chosen as a calibration standard, since its photoionization cross-section had been well know. Moreover, photodissociative fragments were also presented. (C) 2011 Elsevier B.V. All rights reserved.
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