---
experiment:
    id: '612'
    experiment_category:
        - 'Gas phase chemical reaction'
        - 'Aerosol formation'
    experiment_date: '2014-08-02'
    temperature: '15'
    relative_humidity: '4'
    seeded_experiment: ''
    type_of_seed: ''
    seed_concentration_units: ''
    initial_seed_concentration_value: ''
    fuchs_adjusted_surface_area: ''
    reaction_type:
        - 'Photooxidation'
    oxidant_name: 'Hydroxyl radical'
    ro2_main_fate: 'HO2'
    ro2_lifetime_seconds: ''
    experiment_goals: 'This experiment is a repeat of 140724 experiment but this time with the NO2PAN monitor to quantify NO, PAN, and MPAN. The goal of this experiment is 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.'
    experiment_summary: 'Observations are the same as for 140724 - large SOA formation, alpha pinene was observed to capture NO3 which indicated that NO3 is product of MPAN oxidation, and MAE does not increase or otherwise alter SOA formation'
    additional_notes: 'Equivalent to Exp#4 in the PCCP paper.'
    light_flux_characterization_id: '28'
    particle_loss_characterization_id: '29'
    vapor_loss_characterization_id: ''
    data_file_original_name: '140802_Timeline.csv'
    oxidant_concentration_units: 'molecules_per_cubic_centimeter'
    initial_oxidant_concentration_value: '1.5e6'
    reactants:
        -
            is_aerosol: ''
            pubchem_cid: ''
            reactant_name: 'Methacrylolyl peroxynitrate(MPAN)'
            not_in_pubchem: ''
            functional_group:
                - 'Alkene'
            concentration_units: 'parts_per_billion'
            functional_group_other: 'peroxynitrate (PAN)'
            initial_concentration_value: '30'
        -
            is_aerosol: ''
            pubchem_cid: '6654'
            reactant_name: 'ALPHA-PINENE'
            not_in_pubchem: ''
            functional_group:
                - 'Alkene'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '30'
        -
            is_aerosol: ''
            pubchem_cid: '784'
            reactant_name: 'hydrogen peroxide'
            not_in_pubchem: ''
            functional_group:
                - 'Hydroperoxide'
            concentration_units: 'parts_per_million'
            functional_group_other: ''
            initial_concentration_value: '2'
        -
            is_aerosol: ''
            pubchem_cid: ''
            reactant_name: 'Methacrylic acid epoxide (MAE)'
            not_in_pubchem: ''
            functional_group:
                - 'Organic acid'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '15'
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '750 Torr'
    doi: 'https://doi.org/10.5065/5ax6-q953'
    download_file_path: 'experiments/EXP_612.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/612'
    experiment_set_name: 'MPAN, Methacrolein, Isobutyraldehyde, and 231MBO photoxidation experiments'
    experiment_set_link: 'https://icarus.ucdavis.edu/experimentset/216'
    chamber_link: 'https://icarus.ucdavis.edu/chamber/553'
    chamber_name: 'Near/Far Bag 2012-2015 (Tran)'
    experiment_name: 'Caltech Atmospheric Chamber_20140802_Methacrylolyl peroxynitrate(MPAN)/ALPHA-PINENE/hydrogen peroxide/Methacrylic acid epoxide (MAE)_Hydroxyl radical_No Seed_Dry'
    experiment_created_at: '2021-08-31 17:25:49'
    experiment_updated_at: '2023-08-22 01:01:57'
chamber:
    id: '553'
    name: 'Near/Far Bag 2012-2015 (Tran)'
    chamber_flow_mode: 'Batch'
    chamber_shape: 'Rectangular Prism'
    chamber_volume_in_cubic_meters: '27'
    chamber_surface_area_in_square_meters: '41.8'
    flow_through_rate_in_liters_per_minute: ''
    chamber_body_material: 'Teflon'
    chamber_body_thickness_in_mils: '50'
    bag_replacement_date: ''
    bag_replacement_frequency: 'As needed'
    chamber_cleaning_method:
        - 'Flushing with air'
    o3_background: '0.5 ppb'
    nox_background: '0.1 ppb for Near, > 0.1 ppb for Far'
    particle_background: '< 0.1 ug/m3'
    air_filtration_method: 'Custom Filter'
    mixing_fans: ''
    mixing_fan_material: ''
    temperature_control: '1'
    temperature_measurements_recorded: '1'
    temperature_range_min_degrees_celsius: '20'
    temperature_range_max_degrees_celsius: '45'
    humidity_control: '1'
    humidity_measurements_recorded: '1'
    relative_humidity_range_min_percent: '5'
    relative_humidity_range_max_percent: '100'
    particle_experiment_capability: '1'
    lights: '1'
    light_source_type: 'UVA Black Lamps'
    link_to_supplemental_information: 'https://www.worldscientific.com/doi/abs/10.1142/9789813147355_0001'
    additional_notes: ''
    organization_id: '540'
    created_at: '2021-08-14T06:34:42.000000Z'
    updated_at: '2021-08-30T21:22:58.000000Z'
experimentSet:
    id: '216'
    name: 'MPAN, Methacrolein, Isobutyraldehyde, and 231MBO photoxidation experiments'
    experiment_set_description: 'Photoxidation of synthesized methacryloyl peroxynitrate (MPAN) to understand its pathways of SOA formation, leading to 2-methylglyceric acid in the particle phase. It is hypothesized that MPAN produces an unstable intermediate called HMML (hydroxymethyl methyl-a-lactone) that ring opens when it hits a surface, with co-product NO3. Some experiments were done with alpha-pinene as an NO3 scavenger, with the production of pinene nitroxy hydroperoxide (PNP, m/z 316 C10H17NO5) evidence of the alpha-pinene + NO3 chemistry. Photoxidation of methacrolein (MACR) was performed for comparison. Photooxidation of 2-methyl-but-3-ene-1-ol (231MBO) and isobutyraldehyde were performed because they are (or can produce) analogous compounds that will give insight into the oxidation mechanism. Experiments were mainly performed dry and with no seeds, although 2 experiments were performed on with varying particle liquid water on ammonium sulfate (AS) seeds. Note that particle wall loss has already been applied to SMPS data, but the raw data are also provided as well as the wall loss kinetic parameters.'
    chamber_id: '553'
    created_at: '2021-08-14T06:46:05.000000Z'
    updated_at: '2023-08-23T08:01:38.000000Z'
    time_units: 'Experiment time (minutes, local)'
    publications:
        67: 'https:/dx.doi.org/10.1039/C5CP02001H'
    downloadFileSize: '3712906'
    download_file_path: 'experimentSets/EXPSET_216.zip'
    collaborators:
        -
            name_first: 'Tran'
            name_middle: ''
            name_last: 'Nguyen'
            affiliation: 'UC Davis'
        -
            name_first: 'Paul'
            name_middle: ''
            name_last: 'Wennberg'
            affiliation: 'Caltech'
organization:
    id: '540'
    lab_name: 'Caltech Atmospheric Chamber'
    lab_affiliation: 'California Institute of Technology, Pasadena, CA'
    lab_currently_active: '1'
    legal_constraints_statement: 'The Principal Investigator (PI) and institution retain any and all rights to the data that they generated. Use of ICARUS shared data in published materials or materials under review, including peer-reviewed publications or submissions, conference presentations, reports, and proposals, requires notification of the PI. For materials meant for dissemination that significantly depend on the data shared by specific PIs, the database user is required to offer the specific PI(s), and associated coworkers, co-authorship in said publications. When ICARUS data are used in published materials, the data should be cited and the DOI for the Experiment or Experiment Set should be provided in the Data Availability statement.'
    access_constraints_statement: 'These data are openly accessible by all registered users. Accounts are available free of charge following the registration of user information with a valid email address.'
    additional_notes: ''
    created_at: '2019-07-21T00:30:22.000000Z'
    updated_at: '2020-05-28T10:48:49.000000Z'
    pi:
        -
            name_first: 'John'
            name_middle: 'H'
            name_last: 'Seinfeld'
            orcid: 'https://orcid.org/0000-0003-1344-4068'
            phone: '(626) 395-4635'
            email: 'seinfeld@caltech.edu'
    data_manager:
        -
            name_first: 'Stephanie'
            name_middle: ''
            name_last: 'Kong'
            phone: '626-395-3194'
            email: 'wkong@caltech.edu'

---
Local time (hh:mm),"Action  (Time zero is ""Lights On"" time)"
8:30,Chill bag to 15degC
9:40,Started instruments
11:20,Injecting H2O2 (110 uL of 50%wt or appox 2ppm)
12:20,Stop H2O2 injection
13:14,PAN instrument is clogging - delaying experiment until that is fixed
14:05,Started collecting NO2PAN data using revised settings
14:15,Injected 6.5uL alpha-pinene (approx 30 ppb)
14:40,Stopped alpha-pinene injection
14:55,Injecting MPAN in tridecane (confirm can see it with NO2PAN instrument)
15:35,Done with MPAN injection (about 30 ppb)
16:30,Lights on 100%
21:03,Lights off
22:05,Inject MAE (methacrylic acid epoxide) 
22:30,Stopped injecting MAE
23:50,Collecting filter sample (and shut down instruments)
9:30,(next day) stop filter collection and flush chamber
