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| Titel |
Online Identification of Gas/Particle Products from M-xylene Photo-Oxidation |
| VerfasserIn |
J. Bennett, D. Hastie, J. Auld |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250024302
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| Zusammenfassung |
| Particulate matter in the atmosphere is a major pollutant that contributes to climate change, reduced visibility and negative human health impacts. Secondary particulate matter formed from the photo-oxidation of hydrocarbons significantly contributes to the particulate matter concentration in the atmosphere, particularly in the Northern Hemisphere. However, at this time there is a lack of understanding of the chemical reactions that produce the secondary particulate matter. To further the knowledge in this area, we have been using a newly developed system to investigate the composition of secondary particulate matter formed from the photo-oxidation of aromatic hydrocarbons. The system consists of a flow reactor for hydrocarbon oxidation, an online Counter Flow Membrane Denuder (CFMD) for gas/particle separation and an APCI MS-MS (TAGA 6000E) for composition analysis.
This system has been used to study the HO initiated oxidation of m-xylene. The products formed during the experiment were a complex mixture of organic species in both the gas and particle phase. Results showing the detection of a wide variety of species including ring retaining products, furanones, quinones, and nitrophenols will be presented. |
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