ICARUS Chamber Experiment: Caltech Atmospheric Chamber_20130410_trans-beta IEPOX/hydrogen peroxide_Hydroxyl radical_Ammonium sulfate

Goals:
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 H2O2 was added and lights turned on to photolyze the IEPOX on the particles and walls.

Summary:
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: 50-83
Temperature: 16-22
Seed Name: Ammonium sulfate
Pressure: 750 Torr

DOI

https://doi.org/10.5065/sawa-km16

ICARUS Experiment Details

https://icarus.ucdavis.edu/experiment/623

Temporal Range

2013-04-10 to 2013-04-10

Related Links

Publication - Organic aerosol formation from the reactive uptake of isoprene epoxydiols (IEPOX) onto non-acidified inorganic seeds

GCMD Science Keywords

• Atmosphere > Aerosols
• Atmosphere > Atmospheric Chemistry > Trace Gases/Trace Species

GCMD Instruments

• In Situ/Laboratory Instruments > Chemical Meters/Analyzers

File Media Types

• application/zip

Support Contact

Kong, Stephanie
Caltech Atmospheric Chamber
wkong@caltech.edu

Data Curator

GDEX Curator
UCAR/NCAR - GDEX
gdex@ucar.edu

Legal Constraints

Creative Commons Attribution 4.0 International License.

Access Constraints

These data are openly accessible by all registered users. Accounts are available free of charge following the registration of user information with a valid email address.

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