淡江大學機構典藏:Item 987654321/25116
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    題名: Observation of self-ion-molecule reactions during collisionally activated dissociation in an ion-trap mass spectrometer
    作者: Wu, Hui-fen;Wu, Mon-tin;Chen, Chien-hung
    貢獻者: 淡江大學化學學系
    關鍵詞: ion–molecule reactions;ion trap;dopamine
    日期: 2004-04
    上傳時間: 2009-12-01
    出版者: Chichester: John Wiley & Sons Ltd.
    摘要: This paper describes the formation of protonated molecules ([M + H]+) and adduct ions by self-ion-molecule reactions (SIMR) during collisionally activated decomposition (CAD) of methyne addition ions ([M + CH]+) produced from chemical ionization (CI) or SIMR in both an external and internal source ion-trap mass spectrometer (ITMS). The CAD results for the methyne addition ions of dopamine produced from both SIMR and dimethyl ether CI undertaken in the external and internal source ITMS were compared in order to prove the occurrence of SIMR during CAD processes. Compared with the external source ITMS, the internal source ITMS is much more easily applicable to this type of reaction owing to the large population of neutral analytes present in the trap.
    This paper describes the formation of protonated molecules ([M + H]+) and adduct ions by self-ion-molecule reactions (SIMR) during collisionally activated decomposition (CAD) of methyne addition ions ([M + CH]+) produced from chemical ionization (CI) or SIMR in both an external and internal source ion-trap mass spectrometer (ITMS). The CAD results for the methyne addition ions of dopamine produced from both SIMR and dimethyl ether CI undertaken in the external and internal source ITMS were compared in order to prove the occurrence of SIMR during CAD processes. Compared with the external source ITMS, the internal source ITMS is much more easily applicable to this type of reaction owing to the large population of neutral analytes present in the trap.
    關聯: Journal of mass spectrometry 39(4), pp.396-401
    DOI: 10.1002/jms.601
    顯示於類別:[化學學系暨研究所] 期刊論文

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