High efficiency photo-induced dissociation of precursor ions in a tandem time-of-flight mass spectrometer

High efficiency photo-induced dissociation of precursor ions in a tandem time-of-flight mass spectrometer

High efficiency photo-induced dissociation (PID) has been demonstrated in a tandem time-of-flight mass spectrometer. This intrument focuses isomass ion packets to temporal and spatial dimensions similar to those of the focused laser pulses from a high power excimer laser. This high density overlap o...

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Bibliographic Details
Published in:Journal of the American Society for Mass Spectrometry Vol. 4; no. 9; pp. 751 - 754
Main Authors: Seeterlin, M.A., Vlasak, P.R., Beussman, D.J., McLane, R.D., Enke, C.G.
Format: Journal Article
Language:English
Published: New York, NY Elsevier Inc 01-09-1993
Elsevier Science
Subjects:
Chemistry
Exact sciences and technology
Mass spectrometry
Organic chemistry
Reactivity and mechanisms
Collisional activation
Time of flight method
Mass spectrometry MS/MS
Benzenic compound
Photoinduced effect
Fragmentation pattern
Molecular ions
Precursor
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Summary:High efficiency photo-induced dissociation (PID) has been demonstrated in a tandem time-of-flight mass spectrometer. This intrument focuses isomass ion packets to temporal and spatial dimensions similar to those of the focused laser pulses from a high power excimer laser. This high density overlap of photons and ions yields highly efficient fragmentation and also provides high resolution selection of specific precursor ion mass-to-charge ratio values. Using 193 nm photon excitation of the molecular ion of bromobenzene ( m/z = 156), fragmentation, collection, and PID efficiencies of 79%, 132%, and 104%, respectively, were obtained. Characteristic fragmentations of toluene, nitrobenzene, acetophenone, triethylamine, N,N-diethylformamide, N-methylacetamide, and cyclohexene have also been demonstrated.
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ISSN:1044-0305
1879-1123
DOI:10.1016/1044-0305(93)80055-4