scholarly journals Fragmentation, auto-modification and post ionisation proton bound dimer ion formation: the differential mobility spectrometry of low molecular weight alcohols

The Analyst ◽  
2016 ◽  
Vol 141 (15) ◽  
pp. 4587-4598 ◽  
Author(s):  
D. M. Ruszkiewicz ◽  
C. L. P. Thomas ◽  
G. A. Eiceman
Keyword(s):  
Molecular Weight ◽  
Atmospheric Pressure ◽  
Differential Mobility Spectrometry ◽  
Low Molecular Weight ◽  
Differential Mobility ◽  
Ion Formation ◽  
Proton Bound Dimer ◽  
Enhanced Selectivity

Ion-neutral interactions at atmospheric pressure result in significant complexity in the observed responses for alcohols by differential mobility spectrometry. Such behaviours ultimately enable enhanced selectivity and confidence in data assignments.

Miniature Differential Mobility Spectrometry Using Atmospheric Pressure Photoionization

2006 ◽  
Vol 78 (13) ◽  
pp. 4553-4563 ◽  
Author(s):  
Erkinjon G. Nazarov ◽  
Raanan A. Miller ◽  
Gary A. Eiceman ◽  
John A. Stone
Keyword(s):  
Atmospheric Pressure ◽  
Differential Mobility Spectrometry ◽  
Differential Mobility ◽  
Atmospheric Pressure Photoionization

scholarly journals FAPA mass spectrometry of hydroxychalcones. Comparative studies with classical methods of ionization

2014 ◽  
Vol 27 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Marek Smoluch ◽  
Grazyna Bartkowiak ◽  
Edward Reszke ◽  
Wojciech Lechowicz ◽  
Jerzy Silberring ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Weight ◽  
Comparative Studies ◽  
Atmospheric Pressure ◽  
Ion Sources ◽  
Low Molecular Weight ◽  
Fragmentation Pathways ◽  
Low Molecular Weight Compounds ◽  
Flowing Atmospheric Pressure Afterglow ◽  
Comparison Of The Results

Abstract In this paper we are focused on analysis of hydroxychalcones, i.e. 2’-hydroxychalcone, 3’-hydroxychalcone and 4’-hydroxychalcone, by the Flowing Atmospheric Pressure Afterglow mass spectrometry (FAPA-MS), and on comparison of the obtained data with other classical methods including ESI-MS, APCI, MALDI, and GC/EI-MS. The paper is presenting fragmentation pathways of both positive-, and negative hydroxychalcone ions. Tested compounds were characterized by comparison of the results (signals m/z and relative intensities) from the five mass spectrometry techniques, showing very good utility of FAPA method for fast and easy analysis of the low molecular weight compounds. Moreover, FAPA does not require a time-consuming derivatization, nor search for a suitable solvent or matrix, often incompatible with various ion sources.

Mass spectrometric characteristics and preliminary figures of merit for polyaromatic hydrocarbons via the liquid sampling-atmospheric pressure glow discharge microplasma

2020 ◽  
Vol 35 (11) ◽  
pp. 2475-2478
Author(s):  
Tyler J. Williams ◽  
Jacob R. Bills ◽  
R. Kenneth Marcus
Keyword(s):  
Molecular Weight ◽  
Atmospheric Pressure ◽  
Polyaromatic Hydrocarbons ◽  
Mass Spectrometric ◽  
Low Molecular Weight ◽  
Atmospheric Pressure Glow Discharge ◽  
Figures Of Merit ◽  
Ionization Mechanisms ◽  
Pressure Glow Discharge ◽  
Polar Low

The versatility of the LS-APGD microplasma is extended beyond elemental and polar molecular species to non-polar, low molecular weight polyaromatic hydrocarbons. Insights into ionization mechanisms are gained, with preliminary LODs determined.

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