Resonant laser mass spectrometry: fragmentation patterns from 13C1 naturally labeled molecules |
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| Institution: | 1. Department of Chemistry, University of Duisburg–Essen, Germany;2. Center for Nanointegration Duisburg–Essen (CENIDE), University of Duisburg–Essen, Germany;3. Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg–Essen, Germany |
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| Abstract: | The potential of resonance-enhanced multiphoton ionization (REMPI) mass spectrometry to pick out the fragmentation pattern due to 13C1-isotopomers from the fragmentation pattern due to the unlabeled molecule, in non-isotope-enriched samples, has been explored. Toluene, n-propylbenzene, ortho-diethylbenzene, and tert-butylbenzene have been used as testing samples. The fragmentation patterns of the unlabeled molecule and of the natural abundance 13C1-isotopomer have been measured in a time-of-flight mass analyzer by exciting successively the S1 ← S0 origins of the 12C-monoisotopic molecule and 13C1-isotopomers. Fragmentation mechanisms are not completely clear from the comparison of these mass spectra, but the method can be applied to low concentration enriched compounds labeled in known positions. |
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