---
experiment:
    id: '620'
    experiment_category:
        - 'Gas phase chemical reaction'
        - 'Aerosol formation'
    experiment_date: '2014-08-19'
    temperature: '25'
    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: 'NO2'
    ro2_lifetime_seconds: ''
    experiment_goals: 'This experiment was done to react Methacrolein (MACR) with OH in the high NO2 condition at 25 Celsius. Mostly done for reproducibility and SOA composition.'
    experiment_summary: 'The reaction produced a lot of SOA through dry nucleation.'
    additional_notes: 'Equivalent to Exp#9 in the PCCP paper.'
    light_flux_characterization_id: '30'
    particle_loss_characterization_id: '29'
    vapor_loss_characterization_id: ''
    data_file_original_name: '140819_Timeline.csv'
    oxidant_concentration_units: 'molecules_per_cubic_centimeter'
    initial_oxidant_concentration_value: '1e7'
    reactants:
        -
            is_aerosol: ''
            pubchem_cid: '6562'
            reactant_name: 'METHACROLEIN'
            not_in_pubchem: ''
            functional_group:
                - 'Aldehyde'
                - 'Alkene'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '101'
        -
            is_aerosol: ''
            pubchem_cid: '12231'
            reactant_name: 'Methyl nitrite'
            not_in_pubchem: ''
            functional_group: []
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '200'
        -
            is_aerosol: ''
            pubchem_cid: '3032552'
            reactant_name: '10102-44-0'
            not_in_pubchem: ''
            functional_group:
                - 'NOx'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '110'
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '750 Torr'
    doi: 'https://doi.org/10.5065/b2h3-8665'
    download_file_path: 'experiments/EXP_620.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/620'
    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_20140819_METHACROLEIN/Methyl nitrite/10102-44-0_Hydroxyl radical_No Seed_Dry'
    experiment_created_at: '2021-09-01 12:49:14'
    experiment_updated_at: '2023-08-22 01:02:07'
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: '2023-08-23T08:01:45.000000Z'
    time_units: 'Experiment time (minutes, local)'
    publications:
        67: 'https:/dx.doi.org/10.1039/C5CP02001H'
    downloadFileSize: '3712916'
    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)"
9:27,Started instruments
11:34,Inject 8.5uL of methacrolein (should be 100 ppb)
11:48,Stop injecting methacrolein
11:50,Injected NO2 (appox 50 ppb)
12:15,Injecting 11.7 Torr of CH3ONO in balance N2
12:28,Stopped CH3ONO injection
12:28,Lights on 100%
14:50,Lights off
15:15,Injecting another 9.4 Torr of CH3ONO
15:30,Stopped injections
15:30,Lights on 100%
17:54,Lights off
