Goals:
To quantify the nitrooxy-hydroperoxide yield and the SOA yield from nighttime RO2+RO2-dominated NO3-initiated chemistry of a-pinene using N2O5. This experiment was predominantly to collect a filter to analyze the chemical content of pinene+NO3 RO2+RO2 SOA by offline HRMS.
Summary:
a-pinene and seed aerosol were injected into the chamber, followed by N2O5, which quickly dissociated to NO2 and NO3. a-pinene decayed rapidly by reaction with NO3. Gas phase was monitored by CF3O- CIMS and particle formation by SMPS. After all injections, a filter was collected for offline HRMS analysis.
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: ALPHA-PINENE, Dinitrogen pentoxide
Reaction Type: Dark oxidation
Relative Humidity: 5
Temperature: 22
Seed Name: Ammonium sulfate
Pressure: 755 Torr
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