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题名: Electrospray Ionization Quadrupole Time-of-flight Tandem Mass Spectrometry of Iridoid Glucosides in Positive Ion Mode
作者: Li Cun-Man1;  Liang Xin-Miao2;  Xue Xing-Ya2
关键词: Iridoid glucoside ;  Mass spectral fragmentation behavior ;  Electrospray ionization ;  Positive ion mode
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2013-03-10
DOI: 10.7503/cjcu20120570
卷: 34, 期:3, 页:567-572
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The mass spectral fragmentation behaviors of iridoid glucosides(IGs) was studied via electrospray ionization(ESI) quadrupole time-of-flight tandem mass spectrometry (Q-TOF MS/MS) in the positive ion mode. The homogeneous IGs, such as 7,8-cyclopentene-type and cyclopentane-type IGs, the main and typical losses of these classes of compounds are the H2O, CO2, CH3OH, CH3COOH and a glucosidic unit, which indicate the presence of OH, COOH, COOCH3, CH3COO and glucosidic groups on the aglycone moiety. The common fragment ion [Glc+Na](+) (m/z 185. 0) was detected, due to the existence of glucosidic unit. In addition, the cleavages of the dihydro-pyranoid ring were observed in the different sub-classes, but no cleavages were observed in other parts of the aglycone moieties and glucosidic units. The mass spectral fragmentation patterns of IGs in positive ion mode were less characteristic than those in negative ion mode, and the ion intensities were also weaker than those in negative ion mode.
关键词[WOS]: COLLISION-INDUCED DISSOCIATION ;  METAL CATIONIZATION ;  MULTISTAGE ;  DIFFUSA
语种: 英语
WOS记录号: WOS:000317085500015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137715
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Hebei Univ Sci & Technol, Hebei Res Ctr Anal & Testing, Shijiazhuang 050018, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Li Cun-Man,Liang Xin-Miao,Xue Xing-Ya. Electrospray Ionization Quadrupole Time-of-flight Tandem Mass Spectrometry of Iridoid Glucosides in Positive Ion Mode[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2013,34(3):567-572.
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