Mechanism investigation of HS radical and CS losses from positively charged biradicals of diphenyl sulfides by APCI mass spectrometry

2016 ◽  
Vol 30 ◽  
pp. 2-7
Author(s):  
Xiaoji Cao ◽  
Chenlu Wang ◽  
Weimin Mo
Keyword(s):  
Mass Spectrometry ◽  
Apci Mass Spectrometry ◽  
Positively Charged

Electrospray Ion Mobility Mass Spectrometry of Positively Charged Sodium Bis(2-Ethylhexyl)Sulfosuccinate Aggregates

2014 ◽  
Vol 20 (2) ◽  
pp. 169-175 ◽  
Author(s):  
David Bongiorno ◽  
Serena Indelicato ◽  
Gianluca Giorgi ◽  
Simona Scarpella ◽  
Vincenzo Turco Liveri ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ion Mobility ◽  
Ion Mobility Mass Spectrometry ◽  
Positively Charged

Profiling of bioactive compounds in cultivars of Runner and Valencia peanut market-types using liquid chromatography/APCI mass spectrometry

2012 ◽  
Vol 132 (1) ◽  
pp. 525-531 ◽  
Author(s):  
Yvonne Chukwumah ◽  
Lloyd Walker ◽  
Bernhard Vogler ◽  
Martha Verghese
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Bioactive Compounds ◽  
Apci Mass Spectrometry

scholarly journals Interfacial Electro-Epoxidation in Electrospray Ionization Mass Spectrometry for Simultaneous Analysis of Negatively and Positively Charged Unsaturated Glycerophospholipids

2020 ◽  
Author(s):  
Shuli Tang ◽  
Licheng Fan ◽  
Heyong Cheng ◽  
Xin Yan
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Simultaneous Detection ◽  
Multiple Roles ◽  
Ionization Mass ◽  
Double Bonds ◽  
Related Research ◽  
Unsaturated Lipids ◽  
Epoxidation Reaction ◽  
Positively Charged

In this study, we developed an AC-induced interfacial electro-epoxidation reaction for localization of double-bonds in nega-tively and positively charged forms of lipids simultaneously. An AC voltage plays multiple roles in this method, including initiation of the electrochemical epoxidation of double-bonds in both charge states of lipids, and protonation and deprotona-tion of lipid for detection in both ion modes. The advantages of simultaneous detection of negatively changed and positively charged unsaturated lipids, voltage-controlled electrochemical derivatization, and the low sample consumption allow its wide applications in a broad range of lipid-related research.

Determination of Oxazepam Glucuronide in Human Urine by Liquid Chromatography/APCI-Mass Spectrometry.

Eisei kagaku ◽  
1992 ◽  
Vol 38 (2) ◽  
pp. 162-167 ◽  
Author(s):  
MICHIAKI TATSUNO ◽  
MAYUMI NISHIKAWA ◽  
MUNEHIRO KATAGI ◽  
HITOSHI TSUCHIHASHI ◽  
KAZUO IGARASHI ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Human Urine ◽  
Apci Mass Spectrometry

scholarly journals Improved method for the analysis of membrane proteins by mass spectrometry

2007 ◽  
Vol 30 (1) ◽  
pp. 89-94 ◽  
Author(s):  
Shama P. Mirza ◽  
Brian D. Halligan ◽  
Andrew S. Greene ◽  
Michael Olivier
Keyword(s):  
Mass Spectrometry ◽  
Membrane Proteins ◽  
Peptide Ions ◽  
Membrane Bilayer ◽  
Mass Spectral ◽  
Associated Proteins ◽  
Mass Spectrometric Identification ◽  
Membrane Bound ◽  
Positively Charged

Membrane-bound and membrane-associated proteins are difficult to analyze by mass spectrometry, since the association with lipids impedes the isolation and solubilization of the proteins in buffers suitable for mass spectrometry and the efficient generation of positively charged peptide ions by electrospray ionization. Current methods mostly utilize detergents for the isolation of proteins from membranes. In this study, we present an improved detergent-free method for the isolation and mass spectrometric identification of membrane-bound and membrane-associated proteins. We delipidate proteins from the membrane bilayer by chloroform extraction to overcome dissolution and ionization problems during analysis. Comparison of our results to results obtained by direct tryptic digestion of insoluble membrane pellets identifies an increased number of membrane proteins, and a higher quality of the resulting mass spectral data.

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