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Poster Presentations
Day 4, June 25（Wed.）
Room P (Maesato East, Foyer, Ocean Wing)
- 4P-AM-30
Product ion species in CID spectra change depending on mass spectrometers and ionization methods
(Yokohama City University)
oHaruki Nagata, Yuuto Kiuchi, Yukiumi Kita, Kanako Sekimoto
Mass spectrometry has been used in a wide range of fields, and therefore various mass spectrum libraries have been developed. It was found in this study, when CID is performed on specific precursor ions using different mass spectrometers and ionization methods, the resulting mass spectral patterns changed. Specifically, not only product ion intensities but also product ions species themselves were differed in CID results for deprotonated molecules of benzoic acid and its homologues. Based on these results, this study aims to obtain fundamental data on the relationship between CID spectral patterns and instrumentations/ionization methods, which will contribute to establish a mass spectrum library to provide appropriate information to users.
We performed two experiments to investigate CID results using different instruments (a triple-quadrupole and quadrupole-orbitrap mass spectrometers) and ionization methods [atmospheric pressure corona discharge ionization (APCDI) and electrospray ionization (ESI)].
We have been investigating how different the energy state of molecules is depending on the instrumentation and ionization methods using quantum chemistry.