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Title: Microplasma-based flowing atmospheric-pressure afterglow (FAPA) source for ambient desorption-ionization mass spectrometry

Journal Article · · Analytica Chimica Acta

A new direct-current microplasma-based flowing atmospheric pressure afterglow (FAPA) source was developed for use in ambient desorption-ionization mass spectrometry. The annular-shaped microplasma is formed in helium between two concentric stainless-steel capillaries that are separated by an alumina tube. Current-voltage characterization of the source shows that this version of the FAPA operates in the normal glow-discharge regime. A glass surface placed in the path of the helium afterglow reaches temperatures of up to approximately 400 °C; the temperature varies with distance from the source and helium flow rate through the source. Solid, liquid, and vapor samples were examined by means of a timeof- flight mass spectrometer. Results suggest that ionization occurs mainly through protonation, with only a small amount of fragmentation and adduct formation. Here, the mass range of the source was shown to extend up to at least m/z 2722 for singly charged species. Limits of detection for several small organic molecules were in the sub-picomole range. Examination of competitive ionization revealed that signal suppression occurs only at high (mM) concentrations of competing substances.

Research Organization:
Indiana Univ., Bloomington, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE
Grant/Contract Number:
FG02-98ER14890; FG02-98ER 14890
OSTI ID:
1421374
Alternate ID(s):
OSTI ID: 1411304
Journal Information:
Analytica Chimica Acta, Vol. 952, Issue C; ISSN 0003-2670
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

References (35)

Mass Spectrometry Sampling Under Ambient Conditions with Desorption Electrospray Ionization journal October 2004
Versatile New Ion Source for the Analysis of Materials in Open Air under Ambient Conditions journal April 2005
Plasma-based ambient mass spectrometry techniques: The current status and future prospective: PLASMA-BASED AMBIENT MASS SPECTROMETRY TECHNIQUES journal December 2013
Mass Spectrometry: Recent Advances in Direct Open Air Surface Sampling/Ionization journal January 2013
Analysis of Solids, Liquids, and Biological Tissues Using Solids Probe Introduction at Atmospheric Pressure on Commercial LC/MS Instruments journal December 2005
Low-Temperature Plasma Probe for Ambient Desorption Ionization journal December 2008
Development of a dielectric barrier discharge ion source for ambient mass spectrometry journal October 2007
Atmospheric Pressure Chemical Ionization Source. 1. Ionization of Compounds in the Gas Phase journal April 2008
Surface Analysis under Ambient Conditions Using Plasma-Assisted Desorption/Ionization Mass Spectrometry journal August 2007
Explosives Detection Using Direct Analysis in Real Time (DART) Mass Spectrometry journal June 2010
Direct detection of explosives on solid surfaces by low temperature plasma desorption mass spectrometry journal January 2009
High-throughput trace melamine analysis in complex mixtures journal January 2009
Analysis of drugs of abuse in biofluids by low temperature plasma (LTP) ionization mass spectrometry journal January 2010
Optimization of a direct analysis in real time/time-of-flight mass spectrometry method for rapid serum metabolomic fingerprinting journal January 2010
Reusable Solid-Phase Microextraction Coating for Direct Immersion Whole-Blood Analysis and Extracted Blood Spot Sampling Coupled with Liquid Chromatography–Tandem Mass Spectrometry and Direct Analysis in Real Time–Tandem Mass Spectrometry journal September 2012
A new, versatile, direct-current helium atmospheric-pressure glow discharge journal January 2006
Ultrasensitive Ambient Mass Spectrometric Analysis with a Pin-to-Capillary Flowing Atmospheric-Pressure Afterglow Source journal July 2011
Halo-Shaped Flowing Atmospheric Pressure Afterglow: A Heavenly Design for Simplified Sample Introduction and Improved Ionization in Ambient Mass Spectrometry journal July 2013
Laser Ablation Coupled to a Flowing Atmospheric Pressure Afterglow for Ambient Mass Spectral Imaging journal November 2008
Determination of psychostimulants and their metabolites by electrochemistry linked on-line to flowing atmospheric pressure afterglow mass spectrometry journal July 2014
Fast polymer fingerprinting using flowing afterglow atmospheric pressure glow discharge mass spectrometry journal January 2009
Microplasmas, an emerging field of low-temperature plasma science and technology journal February 2006
A dc Microplasma on a Chip Employed as an Optical Emission Detector for Gas Chromatography journal June 2000
Nitrogen Microplasma Generated in Chip-Based Ingroove Glow Discharge Device for Detection of Organic Fragments by Optical Emission Spectrometry journal January 2015
Atmospheric-Pressure Microplasma Jets From Linear Arrays of Hollow-Core Optical Fibers for Biomedical Applications journal November 2011
Microplasmas for analytical applications of lab-on-a-chip journal October 2012
Microplasma Discharge Ionization Source for Ambient Mass Spectrometry journal January 2010
Microfabricated Glow Discharge Plasma (MFGDP) for Ambient Desorption/Ionization Mass Spectrometry journal September 2013
Fundamental aspects and applications of glow discharge spectrometric techniques journal January 1998
Characterization of direct-current atmospheric-pressure discharges useful for ambient desorption/ionization mass spectrometry journal May 2009
Automation of a Fourier transform ion cyclotron resonance mass spectrometer for acquisition, analysis, and e-mailing of high-resolution exact-mass electrospray ionization mass spectral data journal November 1999
Investigating the chemical composition of mixed organic–inorganic particles by “soft” vacuum ultraviolet photoionization: The reaction of ozone with anthracene on sodium chloride particles journal December 2006
Rapid direct analysis in real time (DART) mass spectrometric detection of juvenile hormone III and its terpene precursors journal October 2010
Desorption Electrospray Ionization of Explosives on Surfaces:  Sensitivity and Selectivity Enhancement by Reactive Desorption Electrospray Ionization journal September 2005
Ionization matrix effects in plasma-based ambient mass spectrometry sources journal January 2010