ICARUS Chamber Experiment: 2014 FIXCIT Study_20140110_ALPHA-PINENE/hydrogen peroxide_Hydroxyl radical_No Seed_Alpha-pinene + OH, low NO, dry, (NH4)2SO4 seed at end

Goals: To observe the low NOx oxidation products from OH + alpha-pinene for comparison to signals which were observed during the SOAS field campaign. Major first generation products should include the hydroxy hydroperoxide of alpha pinene, and pinonaldehyde.

Summary: The experiment appeared to go well. There was a bit of a SNAFU at the beginning, as it was realized that the chamber exhaust line was still connected about 2-3 minutes after the addition of the alpha-pinene had been started. It was disconnected at this point, however, some of the alpha-pinene may have been lost to the exhaust. However, observations after the alpha-pinene addition was complete and before adding the H2O2, (PTRMS reported 28 ppbv levels of alpha-pinene and CRM OHR reported ~50 s-1 OH reactivity) implied little of the alpha-pinene was lost to the exhaust. Thus, the experiment proceeded as planned. Particle nucleation was observed after about 1.5 hrs of oxidation by the AMS. Peak organic aerosol levels of 25 ug/m^3 were reached after about 3 hrs of oxidation. After ~5hrs of oxidation the lights were turned off, and ammonium sulfate seeds were added to the bag. This caused an increase in OA observed by the AMS.

Organization: 2014 FIXCIT Study Lab Affiliation: California Institute of Technology Chamber: Seinfeld chambers

Experiment Category: Gas phase chemical reaction Oxidant: Hydroxyl radical Reactants: ALPHA-PINENE, hydrogen peroxide Reaction Type: Photooxidation Relative Humidity: 5 Temperature: 27 Pressure: 755

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Questions? Email Resource Support Contact:

  • Nguyen, Tran
    2014 FIXCIT Study

Temporal Range

  • Begin:  2014-01-10
    End:  2014-01-10


Resource Type dataset
Temporal Range Begin 2014-01-10
Temporal Range End 2014-01-10
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

Publication : Overview of the Focused Isoprene eXperiment at the California Institute of Technology (FIXCIT): mechanistic chamber studies on the oxidation of biogenic compounds

Publication : Mechanism of the hydroxyl radical oxidation of methacryloyl peroxynitrate (MPAN) and its pathway toward secondary organic aerosol formation in the atmosphere

Publication : Can Isoprene Oxidation Explain High Concentrations of Atmospheric Formic and Acetic Acid over Forests?

Additional Information N/A
Resource Format Compressed Archive File (application/zip)
Standardized Resource Format Archive
Asset Size N/A
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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.
Software Implementation Language N/A

Resource Support Name Nguyen, Tran
Resource Support Email tbn@ucdavis.edu
Resource Support Organization 2014 FIXCIT Study
Distributor N/A
Metadata Contact Name GDEX Curator
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization UCAR/NCAR - GDEX

Author Wennberg, Paul
Seinfeld, John
Crounse, John
Nguyen, Tran
Publisher ICARUS Community
Publication Date 2021-10-12
Digital Object Identifier (DOI) https://doi.org/10.5065/m1xr-1v29
Alternate Identifier N/A
Resource Version N/A
Topic Category N/A
Progress N/A
Metadata Date 2022-01-27T09:12:22-07:00
Metadata Record Identifier edu.ucar.gdex::8fea1598-b24b-4b04-b8c9-b6ded2dbbf15
Metadata Language eng; USA
Suggested Citation Wennberg, Paul, Seinfeld, John, Crounse, John, Nguyen, Tran. (2021). ICARUS Chamber Experiment: 2014 FIXCIT Study_20140110_ALPHA-PINENE/hydrogen peroxide_Hydroxyl radical_No Seed_Alpha-pinene + OH, low NO, dry, (NH4)2SO4 seed at end. ICARUS Community. https://doi.org/10.5065/m1xr-1v29. Accessed 26 September 2023.

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