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Issue 5, 2003
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Sampling gaseous oxidation products of aromatic compounds in gas/particle separation systems

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Abstract

In this study we performed a direct comparison between two different ambient air samplers to characterize their performance in sampling oxidized gaseous organic compounds, known as oxidation products of aromatics. We investigated compounds with a variety of functional groups and vapor pressures. A polyurethane foam (PUF) adsorbent and an annular diffusion denuder sampler were operated along with particle filters. In both systems the sampling devices were liquid-extracted, followed by derivatization and analysis by GC-MS. The PUF system works very well for aromatic as well as non-aromatic compounds, whereas the denuder shows smaller collection efficiencies for highly volatile non-aromatic compounds. In addition, the sampling efficiencies in the PUF set-up are in good agreement with the calculated vapor pressures of the compounds and also the particle phase is not affected by most compounds.

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Publication details

The article was received on 31 Jul 2003, accepted on 29 Aug 2003 and first published on 17 Sep 2003


Article type: Technical Note
DOI: 10.1039/B309158A
Citation: J. Environ. Monit., 2003,5, 103N-107N
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    Sampling gaseous oxidation products of aromatic compounds in gas/particle separation systems

    M. Sax, M. Kalberer and R. Zenobi, J. Environ. Monit., 2003, 5, 103N
    DOI: 10.1039/B309158A

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