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

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Temporal Range

  • Begin:  2013-04-10
    End:  2013-04-10

Keywords

Resource Type dataset
Temporal Range Begin 2013-04-10
Temporal Range End 2013-04-10
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Related Resource #1 : ICARUS Dataset at UC-Davis
Additional Information N/A
Resource Format ASCII
Standardized Resource Format ASCII
Asset Size 89.266 MB
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Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

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Resource Support Email datahelp@ucar.edu
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Distributor NSF NCAR Geoscience Data Exchange
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Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author Seinfeld, John H.
Publisher NSF National Center for Atmospheric Research
Publication Date 2023-08-23
Digital Object Identifier (DOI) https://doi.org/10.5065/sawa-km16
Alternate Identifier d789551
Resource Version N/A
Topic Category environment
Progress completed
Metadata Date 2025-10-09T01:42:17Z
Metadata Record Identifier edu.ucar.gdex::d789551
Metadata Language eng; USA
Suggested Citation Seinfeld, John H.. (2023). ICARUS Chamber Experiment: Caltech Atmospheric Chamber_20130410_trans-beta IEPOX/hydrogen peroxide_Hydroxyl radical_Ammonium sulfate. NSF National Center for Atmospheric Research. https://doi.org/10.5065/sawa-km16. Accessed 12 October 2025.

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