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| Titel |
Total OH reactivity in ambient air measured in the Pearl-River Delta in China 2006 |
| VerfasserIn |
S. Lou, F. Holland, A. Hofzumahaus |
| 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 |
250027686
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| Zusammenfassung |
| We have developed a new instrument for the measurement of the total atmospheric OH
reactivity, which is defined as the pseudo-first order loss-rate coefficient of OH, resulting
from the reactions of OH with atmospheric trace gases like VOCs, CO, NOx etc. The
instrument is capable of measuring the lifetime of OH (i.e., the reciprocal OH reactivity) in
ambient air, by using a pulsed UV-pump laser-induced fluorescence (LIF) probe technique.
The measurement range covers reactivities between 1 s-1 to about 150 s-1, corresponding to
conditions from very clean to very polluted environments, with a time resolution of 1-3
min.
Here we present measured OH reactivities which were collected during the
PRIDE-PRD 2006 photochemistry field campaign in the Pearl River Delta (PRD) in
South-China, and present an analysis of the total burden of reactive VOCs encountered at
PRD. |
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