ICARUS Chamber Experiment: 2014 FIXCIT Study_20140102_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, low NO, dry, no seeds

Goals: Low NO isoprene oxidation experiment to test the waters. Interested mainly in: -do instruments see the usual chemical compounds (ISOPOOH, IEPOX) -are instruments affected by ppm H2O2 levels -working out potential pitfalls in chamber method with this many instruments

Summary: Resolved initial issues with sampling lines and injection lines. Initial H2O2 addition may have been lower due to an eventually fixed issue with a lower injection line pressure. Isoprene injection proceeded as normally, but we started sampling before the prescribed 30 minutes of mixing for hydrocarbon (out of eagerness?). For future runs, it is probably advantageous to add hydrocarbon/standard first, then add H2O2. After approximately 30-45 minutes of sampling, instruments reported stable backgrounds so the full bank of UV lights were turned on. Based on initial reports, the chemistry proceeded as expected. Approximate calculation of RO2 reaction with NO vs. HO2 yielded a 1:14 ratio in the initial (~10min) phase of the experiment, which is very good. Peak ISOPOOH was reached at ~1.5-2hrs into the experiment. Bag volume was checked at 23:17.

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

Experiment Category: Gas phase chemical reaction Oxidant: Hydroxyl radical Reactants: ISOPRENE, hydrogen peroxide Reaction Type: Photooxidation Relative Humidity: 5 Temperature: 27 Pressure: 750 Torr

To Access Resource:

Questions? Email Resource Support Contact:

  • Nguyen, Tran
    tbn@ucdavis.edu
    2014 FIXCIT Study

Temporal Range

  • Begin:  2014-01-02
    End:  2014-01-02

Keywords

Resource Type dataset
Temporal Range Begin 2014-01-02
Temporal Range End 2014-01-02
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 : 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
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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/vfrr-y823
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::64a52454-8bc6-4cfe-87e7-86639602945a
Metadata Language eng; USA
Suggested Citation Wennberg, Paul, Seinfeld, John, Crounse, John, Nguyen, Tran. (2021). ICARUS Chamber Experiment: 2014 FIXCIT Study_20140102_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, low NO, dry, no seeds. ICARUS Community. https://doi.org/10.5065/vfrr-y823. Accessed 28 March 2024.

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