ICARUS Chamber Experiment: Nguyen Group_20220715_Nitrogen Dioxide/Ammonium Sulfate/Ozone/Hydrogen Peroxide / Ocimene_Nitrate radical_Ammonium sulfate

Goals: To quantify SOA yield and gas-phase product yields (particularly of C10 nitrooxy-hydroperoxide and other organonitrates) from humid nighttime RO2+HO2-dominated NO3-initiated chemistry of b-ocimene. Summary: The chamber was humidified, after which H2O2, NO2, and O3 were injected in the chamber and allowed to equilibrate, forming NO3 and HO2. Ammonium sulfate seed particles were injected. Then b-ocimene was injected and decayed by simultaneous reaction with ozone and NO3. 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. Organization: Nguyen Group Lab Affiliation: UC Davis Chamber: Tran's big bag of air Experiment Category: Gas phase chemical reaction, Aerosol formation Oxidant: Nitrate radical Reactants: Nitrogen Dioxide, Ammonium Sulfate, Ozone, Hydrogen Peroxide, Ocimene Reaction Type: Dark oxidation Relative Humidity: 65 Temperature: 22 Seed Name: Ammonium sulfate Pressure: approximate 1 atm

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Temporal Range

  • Begin:  2022-07-15
    End:  2022-07-15

Keywords

Resource Type dataset
Temporal Range Begin 2022-07-15
Temporal Range End 2022-07-15
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 150.775 MB
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Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

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Resource Support Email datahelp@ucar.edu
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Distributor NSF NCAR Geoscience Data Exchange
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Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author Nguyen, Tran B.
Publisher NSF National Center for Atmospheric Research
Publication Date 2023-03-07
Digital Object Identifier (DOI) https://doi.org/10.5065/ereb-8090
Alternate Identifier d789247
Resource Version N/A
Topic Category environment
Progress completed
Metadata Date 2025-10-09T01:36:11Z
Metadata Record Identifier edu.ucar.gdex::d789247
Metadata Language eng; USA
Suggested Citation Nguyen, Tran B.. (2023). ICARUS Chamber Experiment: Nguyen Group_20220715_Nitrogen Dioxide/Ammonium Sulfate/Ozone/Hydrogen Peroxide / Ocimene_Nitrate radical_Ammonium sulfate. NSF National Center for Atmospheric Research. https://doi.org/10.5065/ereb-8090. Accessed 10 October 2025.

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