---
experiment:
    id: '406'
    experiment_category:
        - 'Gas phase chemical reaction'
    experiment_date: '2014-01-23'
    temperature: '25'
    relative_humidity: '50'
    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 designed to be easily compared to our dry no-scavenger isoprene ozonolysis experiment (on January 6th), with the only change in conditions being the humidity (50% RH instead of 3-4%). Our main goal is to see how the products of humid ozonolysis compare with those of dry ozonolysis. The hot, wet conditions at the end may also help with ongoing investigation of GTHOS interference.'
    experiment_summary: 'The experiment went as planned; initial conditions all matched the values we were aiming for, with 601 ppbv of ozone, 53% RH, and approximately 100 ppbv of isoprene at 25 degrees C. Ozonolysis proceeded rapidly, with the CF3O- CIMS observing the usual ozonolysis products (e.g. HMHP), and as we did not use an OH scavenger, the CIMS saw evidence of ISOPOOH and IEPOX formation as well. At the end, the temperature was ramped to 45C, during which a number of ozonolysis product signals increased and GTHOS was able to observe the temperature-dependence of interferences.'
    additional_notes: 'all instruments sampling'
    light_flux_characterization_id: '17'
    particle_loss_characterization_id: ''
    vapor_loss_characterization_id: ''
    data_file_original_name: '20140123_expTimeline.csv'
    oxidant_concentration_units: 'molecules_per_cubic_centimeter'
    initial_oxidant_concentration_value: '1e6'
    reactants:
        -
            is_aerosol: ''
            pubchem_cid: '6557'
            reactant_name: 'ISOPRENE'
            not_in_pubchem: ''
            functional_group:
                - 'Alkene'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '90'
        -
            is_aerosol: ''
            pubchem_cid: '24823'
            reactant_name: 'OZONE'
            not_in_pubchem: ''
            functional_group: []
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '600'
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '750 Torr'
    doi: 'https://doi.org/10.5065/azra-w953'
    download_file_path: 'experiments/EXP_406.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/406'
    experiment_set_name: 'FIXCIT experiments'
    experiment_set_link: 'https://icarus.ucdavis.edu/experimentset/162'
    chamber_link: 'https://icarus.ucdavis.edu/chamber/545'
    chamber_name: 'Seinfeld chambers'
    experiment_name: '2014 FIXCIT Study_20140123_ISOPRENE/OZONE_Hydroxyl radical_No Seed_Isoprene + OH + O3, low NO, 50% humidity, no seeds'
    experiment_created_at: '2020-09-05 19:02:08'
    experiment_updated_at: '2021-10-07 00:57:51'
chamber:
    id: '545'
    name: 'Seinfeld chambers'
    chamber_flow_mode: 'Batch'
    chamber_shape: 'Rectangular Prism'
    chamber_volume_in_cubic_meters: '22'
    chamber_surface_area_in_square_meters: '48'
    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: '40 ppt'
    particle_background: '< 0.01 ug/m3'
    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: '10'
    temperature_range_max_degrees_celsius: '45'
    humidity_control: '1'
    humidity_measurements_recorded: '1'
    relative_humidity_range_min_percent: '4'
    relative_humidity_range_max_percent: '90'
    particle_experiment_capability: '1'
    lights: '1'
    light_source_type: 'UV black lamps (350 nm centered)'
    link_to_supplemental_information: 'https://www.worldscientific.com/doi/abs/10.1142/9789813147355_0001'
    additional_notes: ''
    organization_id: '551'
    created_at: '2020-01-10T00:38:23.000000Z'
    updated_at: '2020-01-14T06:45:36.000000Z'
experimentSet:
    id: '162'
    name: 'FIXCIT experiments'
    experiment_set_description: 'The Focused Isoprene eXperiment at the California Institute of Technology (FIXCIT) was a collaborative study at the atmospheric chambers of Caltech during January 2014. FIXCIT is the laboratory component of SOAS, and is aimed toward (1) better understanding the chemical details behind ambient observations relevant to the southeastern United States, (2) advancing the knowledge of atmospheric oxidation mechanisms of important biogenic hydrocarbons, and (3) characterizing the behavior of field instrumentation using authentic standards. A series of chamber experiments was conducted to investigate the oxidation of isoprene, ?-pinene, methacrolein, pinonaldehyde, acylperoxy nitrates, isoprene hydroxy nitrates (ISOPN), isoprene hydroxy hydroperoxides (ISOPOOH), and isoprene epoxydiols (IEPOX). Pinonaldehyde and isomer-specific standards of ISOPN, ISOPOOH, and IEPOX were synthesized, enabling study of the oxidation mechanisms and instrument responses for these compounds.'
    chamber_id: '545'
    created_at: '2020-01-14T07:02:33.000000Z'
    updated_at: '2021-10-12T07:58:31.000000Z'
    time_units: 'Seconds past midnight'
    publications:
        44: 'https:/dx.doi.org/10.5194/acp-14-13531-2014'
    downloadFileSize: '52041536'
    download_file_path: 'experimentSets/EXPSET_162.zip'
    collaborators:
        -
            name_first: 'Allen'
            name_middle: 'H.'
            name_last: 'Goldstein'
            affiliation: 'UC Berkeley'
        -
            name_first: 'William'
            name_middle: 'H.'
            name_last: 'Brune'
            affiliation: 'Penn State University'
        -
            name_first: 'Ronald'
            name_middle: 'C.'
            name_last: 'Cohen'
            affiliation: 'UC Berkeley'
        -
            name_first: 'Delphine'
            name_middle: 'K.'
            name_last: 'Farmer'
            affiliation: 'Colorado State University'
        -
            name_first: 'Manjula'
            name_middle: 'R.'
            name_last: 'Canagaratna'
            affiliation: 'Aerodyne'
        -
            name_first: 'Douglas'
            name_middle: 'R.'
            name_last: 'Worsnop'
            affiliation: 'Aerodyne'
        -
            name_first: 'Jose'
            name_middle: 'L.'
            name_last: 'Jimenez'
            affiliation: 'University of Colorado Boulder'
        -
            name_first: 'Frank'
            name_middle: 'N.'
            name_last: 'Keutsch'
            affiliation: 'Harvard'
        -
            name_first: 'Saewung'
            name_middle: ''
            name_last: 'Kim'
            affiliation: 'UC Irvine'
        -
            name_first: 'Alex'
            name_middle: 'B.'
            name_last: 'Guenther'
            affiliation: 'UC Irvine'
        -
            name_first: 'John'
            name_middle: 'E.'
            name_last: 'Mak'
            affiliation: 'SUNY Stonybrook'
        -
            name_first: 'Geoffrey'
            name_middle: 'S.'
            name_last: 'Tyndall'
            affiliation: 'NCAR'
        -
            name_first: 'Denise'
            name_middle: 'D.'
            name_last: 'Montzka'
            affiliation: 'NCAR'
        -
            name_first: 'Andrew'
            name_middle: 'J.'
            name_last: 'Weinheimer'
            affiliation: 'NCAR'
        -
            name_first: 'Alam'
            name_middle: ''
            name_last: 'Hasson'
            affiliation: 'Fresno State'
organization:
    id: '551'
    lab_name: '2014 FIXCIT Study'
    lab_affiliation: 'California Institute of Technology'
    lab_currently_active: ''
    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 any of the ICARUS data are used in published materials, an acknowledgement statement should be included, recognizing the efforts of the ICARUS and NCAR DSET teams and support from the National Science Foundation.'
    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: '2020-01-10T00:15:51.000000Z'
    updated_at: '2020-01-11T04:55:16.000000Z'
    pi:
        -
            name_first: 'Paul'
            name_middle: 'O.'
            name_last: 'Wennberg'
            orcid: '0000-0002-6126-3854'
            phone: '626 395 2447'
            email: 'wennberg@caltech.edu'
        -
            name_first: 'John'
            name_middle: 'H.'
            name_last: 'Seinfeld'
            orcid: '0000-0003-1344-4068'
            phone: '626-395-4635'
            email: 'seinfeld@caltech.edu'
        -
            name_first: 'John'
            name_middle: 'D.'
            name_last: 'Crounse'
            orcid: '0000-0001-5443-729X'
            phone: '626-395-8655'
            email: 'crounjd@caltech.edu'
        -
            name_first: 'Tran'
            name_middle: 'B'
            name_last: 'Nguyen'
            orcid: '0000-0001-9206-4359'
            phone: '5307525987'
            email: 'tbn@ucdavis.edu'
    data_manager:
        -
            name_first: 'Tran'
            name_middle: 'B.'
            name_last: 'Nguyen'
            phone: '5307525987'
            email: 'tbn@ucdavis.edu'

---
UTC_hr,Action
15:05,T/RH/NOx/O3 sampling; bag cooled to 25C.
15:30,Began humidification.
17:06,Stopped humidifying; continued filling bag with dry air.
17:49,Stopped filling bag.
17:56,Started O3 injection.
19:30,Started adding air to refill and dilute bag.
19:38,Stopped O3 injection.
19:42,Stopped dry air injection.
20:00,Injected 10.25 uL isoprene.
20:19,Stopped injection.
25:00,Set temperature to ramp to 45C.
25:40,Temperature stabilized in the chamber (still appeared to be ramping in bag).
26:10,Temperature fully stabilized in bag.
26:25,Bag cooling and flushing.