Evaluation of the SOA Formation in the Reaction of Furfural with Atmospheric Oxidants
| Autor: | Pilar Martín, Beatriz Cabañas, Florentina Villanueva, Bernabé Ballesteros, Inmaculada Colmenar, S. Salgado |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
atmospheric degradation
Atmospheric Science Ozone 010504 meteorology & atmospheric sciences aerosol reaction products Inorganic chemistry Infrared spectroscopy Maleic anhydride mechanism furfural 010501 environmental sciences Environmental Science (miscellaneous) lcsh:QC851-999 Furfural 01 natural sciences Aerosol chemistry.chemical_compound chemistry Yield (chemistry) Ultrafine particle lcsh:Meteorology. Climatology Fourier transform infrared spectroscopy 0105 earth and related environmental sciences |
| Zdroj: | Atmosphere, Vol 11, Iss 927, p 927 (2020) Atmosphere Volume 11 Issue 9 |
| ISSN: | 2073-4433 |
| Popis: | An experimental product study of the reactions of furfural with the main tropospheric oxidants (Cl, OH and NO3) has been carried out using a Fourier Transform Infrared spectrophotometer (FTIR) and a gas chromatograph&ndash mass spectrometer with a time of flight detector (GC&ndash TOFMS). The main gas-phase products detected were 5-chloro-2(5H)-furanone, maleic anhydride, 2-nitrofuran and CO. Molar yields were quantified for the detected products in these reactions, thus suggesting the existence of nongaseous products that could not be observed with the analytical techniques employed. The formation of Secondary Organic Aerosol (SOA) from the oxidation of furfural with Cl atoms, OH, NO3 and ozone was investigated in a smog chamber in the absence of inorganic seed aerosols. The experimental results show the formation of ultrafine particles (less than 1 µ m in diameter) for all of the studied reactions except for the nitrate radical. Given their small size, these ultrafine particles (< 1 µ m) can easily penetrate into the respiratory tract and reach the alveolar region. These particles, therefore, have the potential to cause severe damage to the respiratory system. The aerosol yield obtained, Y, was low (< 0.04) in all cases, which means that the aerosols generated from furfural, under atmospheric conditions, could have little impact. |
| Databáze: | OpenAIRE |
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