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Aerosol Vacuum-Assisted Plasma Ionization (Aero-VaPI) Coupled to Ion Mobility-Mass Spectrometry

  • Sandra L. Blair
  • Nga L. Ng
  • Stephen C. Zambrzycki
  • Anyin Li
  • Facundo M. Fernández
Short Communication

Abstract

In this communication, we report on the real-time analysis of organic aerosol particles by Vacuum-assisted Plasma Ionization-Mass Spectrometry (Aero-VaPI-MS) using a home-built VaPI ion source coupled to a Synapt G2-S HDMS ion mobility-mass spectrometry (IM-MS) system. Standards of organic molecules of interest in prebiotic chemistry were used to generate aerosols. Monocaprin and decanoic acid aerosol particles were successfully detected in both the positive and negative ion modes, respectively. A complex aerosol mixture of different sizes of polymers of L-malic acid was also examined through ion mobility (IM) separations, resulting in the detection of polymers of up to eight monomeric units. This noncommercial plasma ion source is proposed as a low cost alternative to other plasma ionization platforms used for aerosol analysis, and a higher-performance alternative to more traditional aerosol mass spectrometers. VaPI provides robust online ionization of organics in aerosols without extensive ion activation, with the coupling to IM-MS providing higher peak capacity and excellent mass accuracy.

Graphical Abstract

Keywords

Plasma ionization Aerosol analysis Prebiotic chemistry 

Notes

Acknowledgment

This work was jointly supported by NSF and the NASA Astrobiology Program, under the NSF Center for Chemical Evolution, CHE-1004570.

Supplementary material

13361_2017_1872_MOESM1_ESM.docx (1.1 mb)
ESM 1 (DOCX 1.07 mb)

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Copyright information

© American Society for Mass Spectrometry 2018

Authors and Affiliations

  • Sandra L. Blair
    • 1
  • Nga L. Ng
    • 1
    • 2
  • Stephen C. Zambrzycki
    • 3
  • Anyin Li
    • 3
  • Facundo M. Fernández
    • 3
  1. 1.School of Chemical and Biomolecular EngineeringGeorgia Institute of TechnologyAtlantaUSA
  2. 2.School of Earth and Atmospheric SciencesGeorgia Institute of TechnologyAtlantaUSA
  3. 3.School of Chemistry and BiochemistryGeorgia Institute of TechnologyAtlantaUSA

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