scholarly journals Influence of the coupling between an atmospheric pressure ion mobility spectrometer and the low pressure ion inlet of a mass spectrometer on the mobility measurement

2016 ◽  
Vol 59 ◽  
pp. 01005
Author(s):  
Frank Gunzer
Keyword(s):  
Mass Spectrometer ◽  
Ion Mobility ◽  
Atmospheric Pressure ◽  
Low Pressure ◽  
Ion Mobility Spectrometer ◽  
Mobility Measurement

Development of an Atmospheric Pressure Ion Mobility Spectrometer–Mass Spectrometer with an Orthogonal Acceleration Electrostatic Sector TOF Mass Analyzer

2013 ◽  
Vol 85 (19) ◽  
pp. 9003-9012 ◽  
Author(s):  
Alexey A. Sysoev ◽  
Denis M. Chernyshev ◽  
Sergey S. Poteshin ◽  
Alexander V. Karpov ◽  
Oleg I. Fomin ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Ion Mobility ◽  
Atmospheric Pressure ◽  
Mass Analyzer ◽  
Ion Mobility Spectrometer ◽  
Orthogonal Acceleration

Separation of asparagine, valine and tetraethylammonium ions overlapping in an ion mobility spectrum by clustering with methanol introduced as a modifier into the buffer gas

2015 ◽  
Vol 7 (3) ◽  
pp. 863-869 ◽  
Author(s):  
R. Fernandez-Maestre ◽  
C. Wu ◽  
H. H. Hill
Keyword(s):  
Mass Spectrometer ◽  
Ion Mobility ◽  
Buffer Gas ◽  
Mobility Spectrum ◽  
Ion Mobility Spectrometer ◽  
Tetraalkylammonium Ions ◽  
Tetraethylammonium Ions

We introduced methanol into the buffer gas of an ion mobility spectrometer-mass spectrometer and mobilities changed depending on ion structures; baseline separation of valine, asparagine, and tetraalkylammonium ions was achieved.

scholarly journals CHARACTERISTICS OF A GRIDLESS TWO-DIAPHRAGM ION GATE AT ATMOSPHERIC PRESSURE

2021 ◽  
Vol 31 (4) ◽  
pp. 55-70
Author(s):  
I. V. Kurnin ◽  
◽  
N. V. Krasnov ◽  
A. N. Arseniev ◽  
A. G. Cherepanov ◽  
...  
Keyword(s):  
Ion Mobility ◽  
Atmospheric Pressure ◽  
Electric Pulse ◽  
Maximum Amplitude ◽  
Electrical Parameters ◽  
Ion Mobility Spectrometer ◽  
Optimal Duration

As an ion gate for the formation of a short ion pulse in an ion mobility spectrometer, a gridless design with two coaxial diaphragms is proposed. It has been experimentally shown that, depending on the geometric and electrical parameters of this shutter, there is an optimal duration of the electric pulse opening the gate, which provide the maximum amplitude of the ion pulse.

Measuring the effects of Coulomb repulsion via signal decay in an atmospheric pressure laser ionization ion mobility spectrometer

2018 ◽  
Vol 24 (4) ◽  
pp. 330-336 ◽  
Author(s):  
Marvin Ihlenborg ◽  
Ann-Kathrin Schuster ◽  
Jürgen Grotemeyer ◽  
Frank Gunzer
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ion Mobility ◽  
Atmospheric Pressure ◽  
Coulomb Repulsion ◽  
Laser Ionization ◽  
Ion Mobility Spectrometer ◽  
Signal Decay ◽  
Ionization Sources ◽  
Reaction Region

Using lasers in ion mobility spectrometry offers a lot of advantages compared to standard ionization sources. Especially, the ion yield can be drastically increased. It can, however, reach levels where the Coulomb repulsion leads to unwanted side effects. Here, we investigate how the Coulomb repulsion can be detected apart from the typical signal broadening by measuring effects created already in the reaction region and comparing them with corresponding finite element method simulations.

Ion mobility spectrometry-mass spectrometry examination of the structures, stabilities, and extents of hydration of dimethylamine–sulfuric acid clusters

2016 ◽  
Vol 18 (33) ◽  
pp. 22962-22972 ◽  
Author(s):  
Jikku M. Thomas ◽  
Siqin He ◽  
Carlos Larriba-Andaluz ◽  
Joseph W. DePalma ◽  
Murray V. Johnston ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sulfuric Acid ◽  
Mass Spectrometer ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Atmospheric Pressure ◽  
P Uptake ◽  
Ion Source ◽  
Cluster Ions ◽  
Water Molecules

Uptake of water molecules by dimethylamine–sulfuric acid cluster ions mitigates dissociation in atmospheric pressure ion source mass spectrometer inlets.

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