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Issue 7, 2012
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Analysis of secondary organic aerosols in air using extractive electrospray ionization mass spectrometry (EESI-MS)

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Abstract

Extractive electrospray ionization mass spectrometry (EESI-MS) has been shown, in other laboratories, to be a useful technique for the analysis of aerosols from a variety of sources. EESI-MS is applied here, for the first time, to the analysis of secondary organic aerosol (SOA) formed from the reaction of ozone and α-pinene. The results are compared to those obtained using atmospheric pressure chemical ionization mass spectrometry (APCI-MS). The SOA was generated in the laboratory and merged with electrospray droplets. The recovered ions were directed towards the inlet of a triple quadrupole mass spectrometer. Through the use of a denuder to remove gas phase compounds, the EESI-MS technique was found to be effective for measuring the major ozonolysis products either in particles alone or in a combination of vapor phase and particulate products. Due to its relatively simple setup and the avoidance of sample collection and work-up, EESI-MS shows promise as an excellent tool for the characterization of atmospherically relevant particles.

Graphical abstract: Analysis of secondary organic aerosols in air using extractive electrospray ionization mass spectrometry (EESI-MS)

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Supplementary files

Article information


Submitted
26 Oct 2011
Accepted
15 Jan 2012
First published
13 Feb 2012

RSC Adv., 2012,2, 2930-2938
Article type
Paper

Analysis of secondary organic aerosols in air using extractive electrospray ionization mass spectrometry (EESI-MS)

L. A. Doezema, T. Longin, W. Cody, V. Perraud, M. L. Dawson, M. J. Ezell, J. Greaves, K. R. Johnson and B. J. Finlayson-Pitts, RSC Adv., 2012, 2, 2930
DOI: 10.1039/C2RA00961G

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