Examination of the best pressure range for ion/molecule reactions of anthraquinones in an external source ion trap mass spectrometer
學年 89
學期 2
出版（發表）日期 2001-04-20
作品名稱 Examination of the best pressure range for ion/molecule reactions of anthraquinones in an external source ion trap mass spectrometer
作品名稱（其他語言）
著者 Wu, Hui-fen; Chen, Chien-hung; Ho, Ming-yi
單位 淡江大學化學學系
出版者 Japan Society for Analytical Chemistry
著錄名稱、卷期、頁數 Analytical sciences 17(4), pp.515-518
摘要 This study outlines some observations of the pressure effect for gas phase ion-molecule reactions of anthraquinone derivatives with dimethyl ether in an external source ion trap mass spectrometer. At the reagent pressure of 7.998 x 10(-2) Pa, formation of the protonated ions, [M + 13]+, [M + 15]+, and [M + 45]+ ions, of anthraquinones can be observed. However, at the pressure of 1.066 x 10(-2) Pa, formation of molecular ions and many fragment ions of the M+. or [M + H]+ ions have been observed. Since the pressure effect is notable within a small range of pressures for many compounds, it is important to draw attention to the use of the ion trap with an external source where other factors such as ion source residence time may play a role. This can also provide some information for better and more careful controls of the reagent pressure in order to obtain fair CI spectra in an external source ion trap mass spectrometer.
關鍵字
語言 en
ISSN 0910-6340 1348-2246
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 是
國別 JPN
公開徵稿
出版型式 紙本 電子版
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