 |
| Titel |
Gas phase glyoxal and methylglyoxal yields from the oxidation of isoprene and first generation products |
| VerfasserIn |
Melissa Galloway, Christine Loza, Lindsay Yee, Arthur Chan, John Crounse, Paul Wennberg, John Seinfeld, Frank Keutsch |
| Konferenz |
EGU General Assembly 2010
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250044438
|
|
|
|
|
|
| Zusammenfassung |
| α-dicarbonyls such as glyoxal and methylglyoxal are of increasing interest due to their
importance in atmospheric processes and their ability to partition from the gas to aerosol
phase. Isoprene oxidation is a major source of glyoxal and methylglyoxal in the
atmosphere. However, the reaction pathways for these compounds are not well
known, nor are the yields. Incorporation of the formation rates and yields of these
compounds determined from our studies will allow us to improve chemical models that
include isoprene oxidation. To achieve this, we performed experiments at the Caltech
environmental chambers to determine the gas phase yields of glyoxal, methylglyoxal, and
formaldehyde from isoprene and its primary reaction products, methyl vinyl ketone and
methacrolein, under varied oxidation conditions. Gas phase glyoxal, methylglyoxal,
and formaldehyde yields from the oxidation of these precursors will be presented
as well as analysis of first generation glyoxal formation from isoprene oxidation. |
|
|
|
|
|
|