Skip to content
Journal article

Aerosol analysis using a Thermal-Desorption Proton-Transfer-Reaction Mass Spectrometer (TD-PTR-MS): a new approach to study processing of organic aerosols

Holzinger R, Williams J, Herrmann F, Lelieveld J, Donahue N, Röckmann T ...see all

Atmospheric Chemistry and Physics, vol. 10, issue 5 (2010) pp. 2257-2267

  • 55

    Readers

    Mendeley users who have this article in their library.
  • 37

    Citations

    Citations of this article.
  • N/A

    Views

    ScienceDirect users who have downloaded this article.
Sign in to save reference

Abstract

We present a novel analytical approach to measure the chemical composition of organic aerosol. The new instrument combines proton-transfer-reaction mass-spectrometry (PTR-MS) with a collection-thermal-desorption aerosol sampling technique. For secondary organic aerosol produced from the reaction of ozone with isoprenoids in a laboratory reactor, the TD-PTR-MS instrument detected typically 80% of the mass that was measured with a scanning mobility particle sizer (SMPS). The first field deployment of the instrument was the EUCAARI-IOP campaign at the CESAR tall tower site in the Netherlands. For masses with low background values (similar to 30% of all masses) the detection limit of aerosol compounds was below 0.2 ng/m(3) which corresponds to a sampled compound mass of 35 pg. Comparison of thermograms from ambient samples and from chamber-derived secondary organic aerosol shows that, in general, organic compounds from ambient aerosol samples desorb at much higher temperatures than chamber samples. This suggests that chamber aerosol is not a good surrogate for ambient aerosol and therefore caution is advised when extrapolating results from chamber experiments to ambient conditions.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

  • R. Holzinger

  • J. Williams

  • F. Herrmann

  • J. Lelieveld

  • N. M. Donahue

  • T. Röckmann

Cite this document

Choose a citation style from the tabs below