ICARUS Chamber Experiment: Nguyen Group_20220523_alpha-Pinene/Ammonium Sulfate/Ozone/Hydrogen Peroxide_Ozone_Ammonium sulfate

Goals:; To quantify SOA yield and gas-phase product yields from humid ozonolysis of a-pinene, which will serve as a "control" experiment to subtract the ozonolysis contribution to the nighttime chemistry of a-pinene as measured in the experiment on 5/20/22.

Summary:; The chamber was humidified, after which H2O2, and O3 were injected in the chamber and allowed to equilibrate. Ammonium sulfate seed particles were injected. Then a-pinene was injected and decayed by reaction with ozone (plus some contribution from OH). Gas phase organics were monitored by CF3O- CIMS (units: normalized counts), particle formation was monitored by SMPS, and RH, T, O3, NOx were monitored throughout.

O3/NOx data sometimes require post-correction not applied here, including subtraction of an ozone interference from H2O2 (1 ppm H2O2 is detected as about 12 ppb ozone) and correction for an in-line HEPA filter (see timeline for applicable timing) that scrubs about 10% of NO2 and 45% of ozone.

CIMS ran out of reagent at about 14:30.

Organization: Nguyen Group; Lab Affiliation: UC Davis; Chamber: Tran's big bag of air

Experiment Category: Gas phase chemical reaction, Aerosol formation; Oxidant: Ozone; Reactants: alpha-Pinene, Ammonium Sulfate, Ozone, Hydrogen Peroxide; Reaction Type: Dark oxidation; Relative Humidity: 63; Temperature: 22; Seed Name: Ammonium sulfate; Pressure: ~1 atm

To Access Resource:

Questions? Email Resource Support Contact:

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

Temporal Range

  • Begin:  2022-05-23
    End:  2022-05-23

Keywords

Resource Type dataset
Temporal Range Begin 2022-05-23
Temporal Range End 2022-05-23
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 Nguyen, Tran B.
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2023-08-23
Digital Object Identifier (DOI) https://doi.org/10.5065/7qr5-3y28
Alternate Identifier d789105
Resource Version N/A
Topic Category environment
Progress completed
Metadata Date 2025-06-25T15:05:02Z
Metadata Record Identifier edu.ucar.rda::d789105
Metadata Language eng; USA
Suggested Citation Nguyen, Tran B.. (2023). ICARUS Chamber Experiment: Nguyen Group_20220523_alpha-Pinene/Ammonium Sulfate/Ozone/Hydrogen Peroxide_Ozone_Ammonium sulfate. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.5065/7qr5-3y28. Accessed 27 June 2025.

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