Electrospray Ionization Mass Spectral Characteristics of Polyamide Containing 1,4,7,10-Tetraazacyclododecane

2006 ◽  
Vol 24 (7) ◽  
pp. 923-928 ◽  
Author(s):  
Ren-Zhong Qiao ◽  
Zhen Zhang ◽  
Yong Ju ◽  
Chuan-Qin Xia ◽  
Xiao-Qi Yu ◽  
...  
Keyword(s):  
Electrospray Ionization ◽  
Spectral Characteristics ◽  
Ionization Mass ◽  
Mass Spectral

Electrospray Ionization Mass Spectral Characteristics and Fragmentation Mechanisms of Tanshinones in Radix Salvia miltiorrhiza

2013 ◽  
Vol 781-784 ◽  
pp. 1027-1031
Author(s):  
Tao Liu ◽  
Gui Feng Zhang ◽  
Hui Yin ◽  
Xiao Bao Jin ◽  
Jia Yong Zhu
Keyword(s):  
Electrospray Ionization ◽  
High Performance ◽  
Collision Energy ◽  
Salvia Miltiorrhiza ◽  
Spectral Characteristics ◽  
Tanshinone Iia ◽  
Pharmacokinetic Analysis ◽  
Ionization Mass ◽  
Mass Spectral ◽  
Radix Salvia Miltiorrhiza

Cryptotanshinone, tanshinone I, and tanshinone IIA were analyzed by High-performance liquid chromatography /electrospray ionization-mass spectrometry. MSn spectra were obtained and optimized by energy collision induced dissociation (CID) from [M+H]+ ions, the effect of collision energy on production of fragmental ions were studied and optimal signals were achieved. With the collision energy of 35%, tanshinones have optimal signals of fragmental ions and maximal amounts of product fragment ions respectively. The fragmentation pathways for the compounds were studied, and this information would be helpful for the quantitative and pharmacokinetic analysis of tanshinones.

Electrospray Ionization Mass Spectral Characterization of Transient Iron Species of Bioinorganic Relevance

1996 ◽  
Vol 35 (8) ◽  
pp. 2369-2372 ◽  
Author(s):  
Jinheung Kim ◽  
Yanhong Dong ◽  
Edmund Larka ◽  
Lawrence Que
Keyword(s):  
Electrospray Ionization ◽  
Spectral Characterization ◽  
Ionization Mass ◽  
Iron Species ◽  
Mass Spectral

Electrospray ionization mass spectral 3nvestigations on multi-nuclear complexes of an azacryptand

Polyhedron ◽  
1995 ◽  
Vol 14 (23-24) ◽  
pp. 3501-3504 ◽  
Author(s):  
Keyu Zhou ◽  
Shaohua Gou ◽  
Zhilin Wang ◽  
Zuanru Yuan
Keyword(s):  
Electrospray Ionization ◽  
Ionization Mass ◽  
Mass Spectral
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