(AB, AC, and AD) diamino-β-CDs and ditosyl-β-CD and on the AC and AD regioisomers of dimesitylenesulphonyl-β-CD, allowing in every case through statistical analysis of the fragmentation pattern the correct assignment of every regioisomer on the basis of an ESI mass spectrum (single ...
MassspectrometryAdvancedMethods_Elviri Electrosprayionization(ESI) Liquidsample 1-3kV needlepotential ++ + + + + ++ + + ++ + + + ++ Electrosprayed ‘aerosol’ + + + ++ + + + + Gas-phaseions Massspectrometer ESSPECTRUMOFHORSE MYOGLOBINMW16.951A) multiplychargediondistribution from+12-24showna...
(AB, AC, and AD) diamino--CDs and ditosyl--CD and on the AC and AD regioisomers of dimesitylenesulphonyl--CD, allowing in every case through statistical analysis of the fragmentation pattern the correct assignment of every regioisomer on the basis of an ESI mass spectrum (...
In this tutorial special feature article, Scott McIndoe and Krista Vikse briefly summarize the techniques that are commonly used to assign any ESI㎝S spectrum, and the various types of ions one is likely to observe from organometallic systems or coordination compounds. They then suggest a ...
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Fig. 3. Electrospray ionization (ESI) mass spectra of a mouse myocardial lipid extract. A: Shows a negative-ion ESI mass spectrum in the absence of LiOH in the lipid extract. B and C: Negative- and positive-ion ESI mass spectra of the lipid extract after addition of LiOH, respectively....
随着质谱(mass spectrometry, MS)、红外光谱及核磁共振等定性分析手段的发展,目前主要采用在线的联用技术,即将色谱法与其它定性或结构分析手段直接联机,来解决色谱定性困难的问题。气相色谱-质谱联用(GC-MS)是Z早实现商品化的色谱联用仪器。目前,小型台式GC-MS已成为很多实验室的常规配置。 赞(17) 回复(0) 评论...
用ESI和MALDI质谱分析大型POSS低聚物方法.pdf,International Journal of Mass Spectrometry 292 (2010) 38–47 Contents lists available at ScienceDirect International Journal of Mass Spectrometry j o u rn al h omepage: w w w. elsev /locate/ijms ESI and MALDI ma
Mass spectr ometr y Lin Sen, Yuan Gu 15 (1. College of Chemistry and Molecular Engineering,Peking University,Beijing 100871; 2. College of Chemistry and Molecular Engineering,Peking University, Beijing 100871) Abstr act: The G-quadruplex as a special DNA secondary structure has been generally ac...
The mass spectrum and several representative extracted ion chromatogram (XIC) were shown in Fig. 2. GD, GT and GQ series mainly appeared as the doubly charged molecular ions ([M-2H]2−); while GM series mainly appeared as deprotonated ions ([M-H]−). By matching the precursor ion...