Reactive uptake coefficients for multiphase reactions determined by a dynamic chamber system
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Published:2022-11-09
Issue:21
Volume:15
Page:6433-6446
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ISSN:1867-8548
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Container-title:Atmospheric Measurement Techniques
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language:en
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Short-container-title:Atmos. Meas. Tech.
Author:
Li GuoORCID, Su HangORCID, Li MengORCID, Kuhn Uwe, Zheng GuangjieORCID, Han Lei, Bao Fengxia, Pöschl UlrichORCID, Cheng YafangORCID
Abstract
Abstract. Dynamic flow-through chambers are frequently used to measure gas exchange
rates between the atmosphere and biosphere on the Earth's surface such as
vegetation and soils. Here, we explore the performance of a dynamic chamber
system in determining the uptake coefficient γ of exemplary gases
(O3 and SO2) on bulk solid-phase samples. After characterization
of the dynamic chamber system, the derived γ is compared with that
determined from a coated-wall flow tube system. Our results show that the
dynamic chamber system and the flow tube method show a good agreement for
γin the range of 10−8 to 10−3. The dynamic chamber
technique can be used for liquid samples and real atmospheric aerosol
samples without complicated coating procedures, which complements the
existing techniques in atmospheric kinetic studies.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
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