Articles | Volume 7, issue 12
Atmos. Meas. Tech., 7, 4417–4429, 2014
https://doi.org/10.5194/amt-7-4417-2014
Atmos. Meas. Tech., 7, 4417–4429, 2014
https://doi.org/10.5194/amt-7-4417-2014

Research article 12 Dec 2014

Research article | 12 Dec 2014

Online derivatization for hourly measurements of gas- and particle-phase semi-volatile oxygenated organic compounds by thermal desorption aerosol gas chromatography (SV-TAG)

G. Isaacman et al.

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Short summary
We present here a new in situ instrument for ambient measurements of highly polar organic semi-volatile and low-volatility compounds in both the gas and particle phase by gas chromatography. Compounds previously measured only through filter collection and offline analysis can now be measured hourly with, in most cases, less than 20% uncertainty. This instrument provides unprecedented time resolution and the first ever observations of gas-particle partitioning for most of these compounds.