Title:

ICARUS Chamber Experiment: Caltech Atmospheric Chamber_20140724_Methacrylolyl peroxynitrate(MPAN)/ALPHA-PINENE/hydrogen peroxide/Methacrylic acid epoxide (MAE)_Hydroxyl radical_No Seed_Dry


Description:

Goals:
This experiment was done to photooxidize MPAN and capture NO3 with a-pinene, while observing secondary organic aerosol (SOA) formation through dry nucleation. MAE was added toward the end of the experiment to see if it enhanced SOA formation.

Summary:
Addition of MAE didn't change the particle mass. Similar to 7/22 - we observed m/z316, the pinene nitroxyhydroperoxide on CIMS, which showed that NO3 radical was liberated from the MPAN+OH reaction. This reaction produced a lot of SOA.

Organization: Caltech Atmospheric Chamber
Lab Affiliation: California Institute of Technology, Pasadena, CA
Chamber: Near/Far Bag 2012-2015 (Tran)

Experiment Category: Gas phase chemical reaction, Aerosol formation
Oxidant: Hydroxyl radical
Reactants: Methacrylolyl peroxynitrate(MPAN), ALPHA-PINENE, hydrogen peroxide, Methacrylic acid epoxide (MAE)
Reaction Type: Photooxidation
Relative Humidity: 4
Temperature: 15
Pressure: 750 Torr


Metadata URL:

https://gdex.ucar.edu/dataset/id/14469fb6-16d1-44f8-9c5c-c57c8b7602fa.html