---
experiment:
    id: '542'
    experiment_category:
        - 'Gas phase chemical reaction'
        - 'Aerosol formation'
    experiment_date: '2021-04-19'
    temperature: '22'
    relative_humidity: '56'
    seeded_experiment: '1'
    type_of_seed: 'Ammonium sulfate'
    seed_concentration_units: 'micrograms_per_cubic_meter'
    initial_seed_concentration_value: '350'
    fuchs_adjusted_surface_area: ''
    reaction_type:
        - 'Dark oxidation'
    oxidant_name: 'Ozone'
    ro2_main_fate: 'Not Sure'
    ro2_lifetime_seconds: ''
    experiment_goals: 'Oxidation product & SOA formation study on 2-methylbut-3-ene-1,2-diol (1,2-DHI) ozonolysis under humid (50% RH) conditions.'
    experiment_summary: '1,2-DHI and ammonium sulfate seed aerosol were injected into a humidified chamber and the bag was mixed and allowed to equilibrate. Ozone was injected over the course of 2 minutes with pulses of mixing air. Ozonolysis and SOA formation were allowed to continue for ~5.5 hours before shutdown. At ~4:15pm an MSMS scan of m/z 169 was performed to help identify this product.'
    additional_notes: ''
    light_flux_characterization_id: ''
    particle_loss_characterization_id: ''
    vapor_loss_characterization_id: ''
    data_file_original_name: 'timeline_210419.csv'
    oxidant_concentration_units: 'parts_per_billion'
    initial_oxidant_concentration_value: '650'
    reactants:
        -
            is_aerosol: ''
            pubchem_cid: '185554'
            reactant_name: '2-methylbut-3-ene-1,2-diol'
            not_in_pubchem: ''
            functional_group:
                - 'Alcohol'
                - 'Alkene'
                - 'Diol'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '100'
        -
            is_aerosol: ''
            pubchem_cid: '24823'
            reactant_name: 'OZONE'
            not_in_pubchem: ''
            functional_group: []
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '650'
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '755'
    doi: 'https://doi.org/10.5065/hw9w-1v28'
    download_file_path: 'experiments/EXP_542.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/542'
    experiment_set_name: '1,2-dihydroxy isoprene (DHI)'
    experiment_set_link: 'https://icarus.ucdavis.edu/experimentset/213'
    chamber_link: 'https://icarus.ucdavis.edu/chamber/552'
    chamber_name: 'Tran''s big bag of air'
    experiment_name: 'Nguyen Group_20210419_2-methylbut-3-ene-1,2-diol/OZONE_Ozone_Ammonium sulfate'
    experiment_created_at: '2021-08-10 16:24:14'
    experiment_updated_at: '2023-08-22 00:58:53'
chamber:
    id: '552'
    name: 'Tran''s big bag of air'
    chamber_flow_mode: 'Batch'
    chamber_shape: 'Rectangular Prism'
    chamber_volume_in_cubic_meters: '10'
    chamber_surface_area_in_square_meters: '28'
    flow_through_rate_in_liters_per_minute: ''
    chamber_body_material: 'Teflon'
    chamber_body_thickness_in_mils: '2'
    bag_replacement_date: ''
    bag_replacement_frequency: 'As needed'
    chamber_cleaning_method:
        - 'Flushing with air'
        - 'Flushing with air with UV lights on'
        - 'Oxidation'
    o3_background: '< 0.5 ppb'
    nox_background: ''
    particle_background: ''
    air_filtration_method: 'Custom filtration canisters to remove NOx, hydrocarbons, water, particles, ozone, SOx from pressurized ambient air.'
    mixing_fans: '1'
    mixing_fan_material: 'Pulsed air jets, manually actuated'
    temperature_control: '1'
    temperature_measurements_recorded: '1'
    temperature_range_min_degrees_celsius: ''
    temperature_range_max_degrees_celsius: ''
    humidity_control: '1'
    humidity_measurements_recorded: '1'
    relative_humidity_range_min_percent: ''
    relative_humidity_range_max_percent: ''
    particle_experiment_capability: '1'
    lights: '1'
    light_source_type: 'UV broadband black lights (centered at 350 nm)'
    link_to_supplemental_information: ''
    additional_notes: '40-Watt, Osram/Sylvania 350nm black lights, 48? long, T12 fluorescent; 72 bulbs, 36 each on two facing walls, with UV-reflective siding on all walls. Lights are controlled via 6 panels (3 on the right wall - top, mid, bottom - and 3 equivalent on the left wall).'
    organization_id: '559'
    created_at: '2021-08-09T19:51:32.000000Z'
    updated_at: '2021-08-11T21:26:03.000000Z'
experimentSet:
    id: '213'
    name: '1,2-dihydroxy isoprene (DHI)'
    experiment_set_description: 'A series of experiments to investigate the gas-phase oxidation rate of 1,2-dihydroxy isoprene, its oxidation products via various RO2 pathways, and the effects of including seed (AS = ammonium sulfate) particles both on observed gas-phase products and on SOA formation.'
    chamber_id: '552'
    created_at: '2021-08-09T21:44:38.000000Z'
    updated_at: '2023-08-23T07:58:57.000000Z'
    time_units: 'HH:MM, local time'
    publications:
        88: 'https:/dx.doi.org/10.1021/acs.est.1c04177'
    downloadFileSize: '1909529'
    download_file_path: 'experimentSets/EXPSET_213.zip'
    collaborators:
        -
            name_first: 'Kelvin'
            name_middle: 'H'
            name_last: 'Bates'
            affiliation: 'Harvard / UC Davis'
organization:
    id: '559'
    lab_name: 'Nguyen Group'
    lab_affiliation: 'UC Davis'
    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: '2021-08-07T00:12:10.000000Z'
    updated_at: '2021-08-07T00:12:10.000000Z'
    pi:
        -
            name_first: 'Tran'
            name_middle: 'B.'
            name_last: 'Nguyen'
            orcid: '0000-0001-9206-4359'
            phone: '5307525987'
            email: 'tbn@ucdavis.edu'
    data_manager:
        -
            name_first: 'Kelvin'
            name_middle: 'H.'
            name_last: 'Bates'
            phone: ''
            email: 'kelvinhbates@gmail.com'

---
?Time_local_HHMM,Action
8:55,Start humidifying
9:10,SMPS & CIMS on
9:40,Stop humidifying
9:45,Start DHI injection
9:53,Start atomizing AS
10:23,All injections stop; pulse mixing air
11:32,Inject O3 for 120 seconds with mixing air pulsing
16:15,Switch CIMS to MSMS mode to identify m/z 169 product
17:05,Shutdown