English  |  正體中文  |  简体中文  |  Items with full text/Total items : 50123/85142 (59%)
Visitors : 7904659      Online Users : 54
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25008


    Title: Hydroxide and oxygen atom attachment to dichlorophthalic anhydride in negative chemical ionization and collisionally activated dissociation in an external source ion trap mass spectrometer
    Authors: 吳慧芬;Wu, Hui-fen;Chen, Chien-hung
    Contributors: 淡江大學化學學系
    Keywords: negative chemical ionization (NCI);ion trap mass spectrometer (ITMS);collisionally activated dissociation (CAD)
    Date: 2002-08
    Issue Date: 2009-12-01
    Publisher: IM Publications
    Abstract: This study reports the investigation of some unusual adduct ions of hydroxide and oxygen atoms in both negative-ion chemical ionization (NCI) and collisionally-activated dissociation (CAD) processes in an external-source ion trap mass spectrometer. The [M + OH]– and [M + OH – Cl]– adduct ions in the NCI spectrum of 4,5-dichlorophthalic anhydride are attributed to an ion/molecule reaction due to the presence of trace amounts of water. The formation of the unusual [M + O – Cl]– ions during CAD of the M– ions from 3,6- and 4,5-dichlorophthalic anhydride isomers is attributed to reactive collisions of the fragment ions with residual oxygen.
    Relation: European journal of mass spectrometry 8(4), pp.329-332
    DOI: 10.1255/ejms.489
    Appears in Collections:[化學學系暨研究所] 期刊論文

    Files in This Item:

    There are no files associated with this item.

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback