The comparisons of anthropogenic-biogenic-atmospheric interactions in pristine, clean, and polluted environments using ambient PTR-ToF-MS spectra
Abstract
The proton transfer reaction (PTR) technology has a great advantage as it is capable of ionizing the most of reactive volatile organic compounds (VOCs) in the atmosphere. The atmospheric community has utilized the characteristics to assess unknown and unidentified compounds in the atmosphere. The combination of PTR and the time-of-flight (ToF) technology has brought even more possibilities as it provides improved mass resolution and sensitivity towards the high mass compounds (e.g. m/z > 100). We propose to present a comprehensive comparison among the datasets from SOAS 2013 (Brent, Alabama USA), GOAmazon 2014 (Manacapuru, Amazonas, Brazil), and MAPS-Seoul 2016 (Taehwa Research Forest, Gyunggi, South Korea). For all the field observations, a high resolution PTR-ToF-MS system (IONICON GmbH) was deployed to detect ambient distributions of VOCs. The comparison will provide a unique opportunity for us to examine BVOCs, especially isoprene chemistry in pristine, clean, and polluted conditions. We will discuss the quantitative comparisons of 1) known BVOCs and their oxidation products and 2) unidentified peaks potentially important in determining missing OH reactivity and aerosol formations in the three very different photochemical environments.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFM.A43E0275S
- Keywords:
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- 3311 Clouds and aerosols;
- ATMOSPHERIC PROCESSESDE: 3355 Regional modeling;
- ATMOSPHERIC PROCESSESDE: 0426 Biosphere/atmosphere interactions;
- BIOGEOSCIENCES