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Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization

RATIONALE: Ionization by atmospheric pressure gas discharge has been employed for a long time in mass spectrometry. Inductively coupled plasma mass spectrometry is an exemplar, and widely used for elemental analysis. The technique has less uptake in organic mass spectrometry. We describe a simple so...

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Autores principales: Owen, Rhodri N., Bajic, Stevan, Kelly, Steven L., Morris, Michael R., Brenton, A. Gareth
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285393/
https://www.ncbi.nlm.nih.gov/pubmed/35610187
http://dx.doi.org/10.1002/rcm.9327
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author Owen, Rhodri N.
Bajic, Stevan
Kelly, Steven L.
Morris, Michael R.
Brenton, A. Gareth
author_facet Owen, Rhodri N.
Bajic, Stevan
Kelly, Steven L.
Morris, Michael R.
Brenton, A. Gareth
author_sort Owen, Rhodri N.
collection PubMed
description RATIONALE: Ionization by atmospheric pressure gas discharge has been employed for a long time in mass spectrometry. Inductively coupled plasma mass spectrometry is an exemplar, and widely used for elemental analysis. The technique has less uptake in organic mass spectrometry. We describe a simple source design that can be readily implemented in most atmospheric pressure ionization (API) systems and compare its performance with that of electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI). METHODS: An in‐house designed helium gas discharge source (referred to as ‘GlowFlow’) was used on a Xevo G2‐S time‐of‐flight mass spectrometer. The GlowFlow source was transferred to a compatible Xevo TQ‐S triple‐quadrupole mass spectrometer using an ultrahigh‐performance liquid chromatograph inlet. Its performance was compared to that of Waters ESI and APCI sources. RESULTS: Preliminary results of GlowFlow on the Swansea instrument are presented to establish context and include analysis of low‐molecular‐mass polymers, benzoic acid and cinnamic acid. Comparison of performance on the Xevo TQ‐S triple‐quadrupole mass spectrometer involved three test mixtures. The method limits of detection (six‐mix) for positive‐ion GlowFlow source were between 0.03 and 10.00 pg with good linear response over two to four orders of magnitude and values of R (2) > 0.98. The GlowFlow ionization source provided a signal intensity that was an order of magnitude greater than that of ESI for an atmospheric pressure gas chromatography standard mix and ionized several compounds that ESI could not. CONCLUSIONS: The current GlowFlow design is relatively simple to retrofit to most API systems due to its small size. The sensitivity of the GlowFlow design is typically an order of magnitude less than that of ESI in positive‐ion mode, but similar in sensitivity in negative‐ion mode and comparable to that of APCI.
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spelling pubmed-92853932022-07-18 Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization Owen, Rhodri N. Bajic, Stevan Kelly, Steven L. Morris, Michael R. Brenton, A. Gareth Rapid Commun Mass Spectrom Research Articles RATIONALE: Ionization by atmospheric pressure gas discharge has been employed for a long time in mass spectrometry. Inductively coupled plasma mass spectrometry is an exemplar, and widely used for elemental analysis. The technique has less uptake in organic mass spectrometry. We describe a simple source design that can be readily implemented in most atmospheric pressure ionization (API) systems and compare its performance with that of electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI). METHODS: An in‐house designed helium gas discharge source (referred to as ‘GlowFlow’) was used on a Xevo G2‐S time‐of‐flight mass spectrometer. The GlowFlow source was transferred to a compatible Xevo TQ‐S triple‐quadrupole mass spectrometer using an ultrahigh‐performance liquid chromatograph inlet. Its performance was compared to that of Waters ESI and APCI sources. RESULTS: Preliminary results of GlowFlow on the Swansea instrument are presented to establish context and include analysis of low‐molecular‐mass polymers, benzoic acid and cinnamic acid. Comparison of performance on the Xevo TQ‐S triple‐quadrupole mass spectrometer involved three test mixtures. The method limits of detection (six‐mix) for positive‐ion GlowFlow source were between 0.03 and 10.00 pg with good linear response over two to four orders of magnitude and values of R (2) > 0.98. The GlowFlow ionization source provided a signal intensity that was an order of magnitude greater than that of ESI for an atmospheric pressure gas chromatography standard mix and ionized several compounds that ESI could not. CONCLUSIONS: The current GlowFlow design is relatively simple to retrofit to most API systems due to its small size. The sensitivity of the GlowFlow design is typically an order of magnitude less than that of ESI in positive‐ion mode, but similar in sensitivity in negative‐ion mode and comparable to that of APCI. John Wiley and Sons Inc. 2022-06-15 2022-08-15 /pmc/articles/PMC9285393/ /pubmed/35610187 http://dx.doi.org/10.1002/rcm.9327 Text en © 2022 The Authors. Rapid Communications in Mass Spectrometry published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Owen, Rhodri N.
Bajic, Stevan
Kelly, Steven L.
Morris, Michael R.
Brenton, A. Gareth
Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization
title Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization
title_full Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization
title_fullStr Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization
title_full_unstemmed Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization
title_short Glow flow ionization mass spectrometry of small molecules. A comparison of a glow flow ionization source (‘GlowFlow’) with electrospray ionization and atmospheric pressure chemical ionization
title_sort glow flow ionization mass spectrometry of small molecules. a comparison of a glow flow ionization source (‘glowflow’) with electrospray ionization and atmospheric pressure chemical ionization
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285393/
https://www.ncbi.nlm.nih.gov/pubmed/35610187
http://dx.doi.org/10.1002/rcm.9327
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