ICARUS Chamber Experiment: 2014 FIXCIT Study_20140114_ISOPRENE/CYCLOHEXANE_Ozone_No Seed_Isoprene + O3, low NO, dry, no seeds

Goals: Isolate ozone chemistry from OH chemistry (OHchem should read zero); investigate ozone-related interferences with OH instruments; explore product formation, and compare to 140106 ozonolysis experiment.

Summary: This was as clean of an experiment as we could have hoped. Cyclohexane seemed to scavenge the OH well, as very low signals of OH+isop tracers were observed. GTHOS measured all milestones of the experiment, and observed much higher interference when isoprene was added. The reaction seemed well-mixed in the beginning, leading to less undesired chemistry. The expected ozonolysis products (like HMHP) were observed with CIMS, as well as 1-2 ug/m3 of particles that nucleated. The MAC and MVK traces on the GC-FID appear to be free of interferences. At the end lights were turned on at 100% for 1 h. After lights off, seeds were added for 1 h. Formaldehyde LIF measured successfully today, which is great news. There seemed to be some interference on the GTHOS even though OH was scrubbed, although interferences may be lower than at the end of the HPALD experiment.

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

Experiment Category: Gas phase chemical reaction Oxidant: Ozone Reactants: ISOPRENE, CYCLOHEXANE Reaction Type: Photooxidation Relative Humidity: 5 Temperature: 25 Pressure: 750 Torr

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Questions? Email Resource Support Contact:

  • Nguyen, Tran
    2014 FIXCIT Study

Temporal Range

  • Begin:  2014-01-14
    End:  2014-01-14


Resource Type dataset
Temporal Range Begin 2014-01-14
Temporal Range End 2014-01-14
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
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Publication : Overview of the Focused Isoprene eXperiment at the California Institute of Technology (FIXCIT): mechanistic chamber studies on the oxidation of biogenic compounds

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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.
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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/10.5065/73nf-7737
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::a0b4d4f8-9e70-4cee-a83d-5450dce1ffcc
Metadata Language eng; USA
Suggested Citation Wennberg, Paul, Seinfeld, John, Crounse, John, Nguyen, Tran. (2021). ICARUS Chamber Experiment: 2014 FIXCIT Study_20140114_ISOPRENE/CYCLOHEXANE_Ozone_No Seed_Isoprene + O3, low NO, dry, no seeds. ICARUS Community. https://doi.org/10.5065/73nf-7737. Accessed 22 September 2023.

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