Articles | Volume 12, issue 9
https://doi.org/10.5194/amt-12-4867-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-12-4867-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Sep 2019
Research article |
| 11 Sep 2019
| 11 Sep 2019
An extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF) for online measurement of atmospheric aerosol particles
Felipe D. Lopez-Hilfiker
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
now at: Tofwerk AG, 3600 Thun, Switzerland
Veronika Pospisilova
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
Wei Huang
Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Markus Kalberer
Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
Department of Environmental Sciences, University of Basel, 4056 Basel, Switzerland
Claudia Mohr
Department of Environmental Science and Analytical Chemistry,
Stockholm University, 106 91 Stockholm, Sweden
Giulia Stefenelli
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
Joel A. Thornton
Department of Atmospheric Sciences, University of Washington, Seattle, Washington, WA 98195, USA
Urs Baltensperger
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
Andre S. H. Prevot
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
Jay G. Slowik
CORRESPONDING AUTHOR
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
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Latest update: 19 Jul 2025
Short summary
We present a novel, field-deployable extractive electrospray time-of-flight mass spectrometer (EESI-TOF), which provides real-time, near-molecular measurements of organic aerosol at atmospherically relevant concentrations, addressing a critical gap in existing measurement capabilities. Successful deployments of the EESI-TOF for laboratory measurements, ground-based ambient sampling, and aboard a research aircraft highlight the versatility and potential of the EESI-TOF system.
We present a novel, field-deployable extractive electrospray time-of-flight mass spectrometer...
