教師資料查詢 | 類別: 期刊論文 | 教師: 吳慧芬 HUI-FEN WU (瀏覽個人網頁)

標題:Examination of the best pressure range for ion/molecule reactions of anthraquinones in an external source ion trap mass spectrometer
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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
語言英文
ISSN0910-6340;1348-2246
期刊性質國外
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產學合作
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國別日本
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出版型式紙本;電子版
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