ICARUS Chamber Experiment: Caltech Atmospheric Chamber_20130415_trans-beta IEPOX/hydrogen peroxide_Hydroxyl radical_Ammonium sulfate_AqueousPhotooxidation

d789661
| DOI: 10.5065/WZCD-NR42
 
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Abstract:

Goals:
This is similar to the 130410 experiment except that H2O2 is atomized with ammonium sulfate in the particles. IEPOX was introduced to hydrated ammonium sulfate at 50% RH, the chamber was cooled to to remove the IEPOX from the gas phase (no more traces in CIMS); this increased the RH to ~80%) then lights turned on to photolyze the IEPOX on the particles.

Summary:
Gaseous H2O2 was not observed when the H2O2 was atomized with AS in the particle, which suggests all the reaction was in the particle phase. The organic aerosol as seen on AMS reacted nearly all away. Fragmentation products such as hydroxyacetone, glycolaldehyde, formic acid, acetic acid, and peroxyacetic acid were seen as products on CIMS

Organization: Caltech Atmospheric Chamber
Lab Affiliation: California Institute of Technology, Pasadena, CA
Chamber: Near/Far Bag 2012-2015 (Tran)

Experiment Category: Condensed-phase chemical reaction, Multiphase chemical reaction
Oxidant: Hydroxyl radical
Reactants: trans-beta IEPOX, hydrogen peroxide
Reaction Type: Photooxidation, Heterogeneous oxidation, Other aqueous/aerosol phase
Relative Humidity: 49-80
Temperature: 16-22
Seed Name: Ammonium sulfate
Pressure: 750 Torr

Temporal Range:
2013-04-15 to 2013-04-15
Variables:
Trace Gases/Trace Species
Data Types:
Platform Observation
Data Contributors:
CALTECH/GPS
Division of Geological and Planetary Sciences, California Institute of Technology
Related Resources:
ICARUS Dataset at UC-Davis
Total Volume:
0.06 MB
Data Formats:
ASCII (see dataset documentation)
Metadata Record:
Data License:
Data LicenseThis work is licensed under a Creative Commons Attribution 4.0 International License.
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