ICARUS Chamber Experiment: 2014 FIXCIT Study_20140130_PINONALDEHYDE/Pinonic acid/Methyl nitrite_Hydroxyl radical_No Seed_Pinonaldehyde + OH, moderate NO, dry, no seeds

Goals:; Explore the gas-phase chemistry of pinonaldehyde when HO2, NO, and NO2 are all present.

Summary:; Synthesized pinonaldehyde was added through a heated line for a few hours to get enough into the bag. This was the first time we had injected pinonaldehyde and learned that next time, we shouldn't heat the injection line or the bulb because that facilitates the oxidation of pinonaldehyde to pinonic acid. Thus both were injected at initial mixing ratios of ~15 ppb (with a fair amount of uncertainty) to ~10 to 20 ppb pinonic acid (also with uncertainty). The pinonic acid is expected to react with OH about 4 times slower than pinonaldehyde, although there is a channel for the production of pinonic acid from the pinonaldehyde photooxidation as well. After initiating OH oxidation by methyl nitrite photolysis, CF3O- CIMS observed that almost all of the carbon ended up as the PAN of pinonaldehyde (which Geoff calls "PiPAN"). Perhaps due to the high formation of the PiPAN, we observed high amounts of nucleated organic aerosol (~40 ug/m^3 at the end of the experiment). At the end of the experiment, most of the pinonaldehyde was gone, but more than half of the pinonic acid was left (perhaps because it's produced as well as lost through OH oxidation). We injected methyl nitrite twice, to replenish the OH. At the end, lights were turned off and the bag was flushed within 20 minutes.

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

Experiment Category: Gas phase chemical reaction; Oxidant: Hydroxyl radical; Reactants: PINONALDEHYDE, Pinonic acid, Methyl nitrite; Reaction Type: Photooxidation; Relative Humidity: 5; Temperature: 26; Pressure: 750 Torr

To Access Resource:

Questions? Email Resource Support Contact:

  • Bob Dattore
    dattore@ucar.edu
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  2014-01-30
    End:  2014-01-30

Keywords

Resource Type dataset
Temporal Range Begin 2014-01-30
Temporal Range End 2014-01-30
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 0.00 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name Bob Dattore
Resource Support Email dattore@ucar.edu
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email rdahelp@ucar.edu
Metadata Contact Organization NCAR Research Data Archive

Author Wennberg, Paul O.
Seinfeld, John H.
Crounse, John D.
Nguyen, Tran B.
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2021-10-07
Digital Object Identifier (DOI) https://doi.org/10.5065/9awv-4t43
Alternate Identifier d789030
Resource Version N/A
Topic Category environment
Progress completed
Metadata Date 2025-06-19T18:05:02Z
Metadata Record Identifier edu.ucar.rda::d789030
Metadata Language eng; USA
Suggested Citation Wennberg, Paul O., Seinfeld, John H., Crounse, John D., Nguyen, Tran B.. (2021). ICARUS Chamber Experiment: 2014 FIXCIT Study_20140130_PINONALDEHYDE/Pinonic acid/Methyl nitrite_Hydroxyl radical_No Seed_Pinonaldehyde + OH, moderate NO, dry, no seeds. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.5065/9awv-4t43. Accessed 22 June 2025.

Harvest Source