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Data · dataset · 2026

ICARUS Chamber Experiment: Nguyen Group_20220713_Ocimene/Ammonium Sulfate/Ozone/Hydrogen Peroxide_Ozone_Ammonium sulfate

Listed in National Center for Atmospheric Research

Goals: To quantify SOA yield and gas-phase product yields from humid ozonolysis of b-ocimene, which will serve as a "control" experiment to subtract the ozonolysis contribution to the nighttime chemistry of b-ocimene as measured in the experiment on 7/15/22.

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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 b-ocimene was injected and decayed by reaction with ozone (plus some contribution from OH).

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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: Ozone Reactants: Ocimene, Ammonium Sulfate, Ozone, Hydrogen Peroxide Reaction Type: Dark oxidation Relative Humidity: 67 Temperature: 22 Seed Name: Ammonium sulfate Pressure: approximately 1 atm

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National Center for Atmospheric Research32e0e6ff-ffbe-4321-998a-fba5dea484e18 d agoJSON v1
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concepts[field].local:field:chemistrymapping · data ucar educonnector:data_ucar_edu@1.0.0
concepts[field].local:field:earth-environmentalmapping · data ucar educonnector:data_ucar_edu@1.0.0
concepts[field].local:field:life-sciencesmapping · data ucar educonnector:data_ucar_edu@1.0.0
concepts[field].local:field:ocean-atmosphericmapping · data ucar educonnector:data_ucar_edu@1.0.0
concepts[field].local:field:social-sciencemapping · data ucar educonnector:data_ucar_edu@1.0.0
created_datesource · data ucar educonnector:data_ucar_edu@1.0.0
descriptionsource · data ucar educonnector:data_ucar_edu@1.0.0/notes
publication_datesource · data ucar educonnector:data_ucar_edu@1.0.0
titlesource · data ucar educonnector:data_ucar_edu@1.0.0/title
updated_datesource · data ucar educonnector:data_ucar_edu@1.0.0