English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49521/84657 (58%)
造訪人次 : 7602445      線上人數 : 82
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25008

    題名: Hydroxide and oxygen atom attachment to dichlorophthalic anhydride in negative chemical ionization and collisionally activated dissociation in an external source ion trap mass spectrometer
    作者: 吳慧芬;Wu, Hui-fen;Chen, Chien-hung
    貢獻者: 淡江大學化學學系
    關鍵詞: negative chemical ionization (NCI);ion trap mass spectrometer (ITMS);collisionally activated dissociation (CAD)
    日期: 2002-08
    上傳時間: 2009-12-01
    出版者: IM Publications
    摘要: 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.
    關聯: European journal of mass spectrometry 8(4), pp.329-332
    DOI: 10.1255/ejms.489
    顯示於類別:[化學學系暨研究所] 期刊論文





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