---
experiment:
    id: '396'
    experiment_category:
        - 'Gas phase chemical reaction'
    experiment_date: '2014-01-10'
    temperature: '27'
    relative_humidity: '5'
    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: 'To observe the low NOx oxidation products from OH + alpha-pinene for comparison to signals which were observed during the SOAS field campaign.  Major first generation products should include the hydroxy hydroperoxide of alpha pinene, and pinonaldehyde.'
    experiment_summary: 'The experiment appeared to go well.  There was a bit of a SNAFU at the beginning, as it was realized that the chamber exhaust line was still connected about 2-3 minutes after the addition of the alpha-pinene had been started.  It was disconnected at this point, however, some of the alpha-pinene may have been lost to the exhaust.  However, observations after the alpha-pinene addition was  complete and before adding the H2O2, (PTRMS reported 28 ppbv levels of alpha-pinene and CRM OHR reported ~50 s-1 OH reactivity) implied little of the alpha-pinene was lost to the exhaust. Thus, the experiment proceeded as planned.  Particle nucleation was observed after about 1.5 hrs of oxidation by the AMS.  Peak organic aerosol levels of 25 ug/m^3 were reached after about 3 hrs of oxidation. After ~5hrs of oxidation the lights were turned off, and ammonium sulfate seeds were added to the bag.  This caused an increase in OA observed by the AMS.'
    additional_notes: "Instrument Status:\r\nTD LIF - up\r\nPTRMS - up\r\nGTHOS - up\r\nLIF OHR - up\r\nCRM OHR - up\r\nNO CL - up\r\nGLY LIP - down \r\nFOR LIF - down \r\nI/A CIMS - up\r\nNCIMS - up\r\nRHTO3 - up\r\nGC FID - down\r\nAMS - up\r\nTQC1 - up\r\nTQC2 - up\r\nTOFCIMS - up\r\n\r\nTimeline (UTC, hrs, January 10, 2014):\r\n16:12 - Started addition of 4.4 mg alpha-pinene to the low NOx bag (6 slm zero air flowing over \r\nalpha pinene in glass vial in warm bath (30-->50C)\r\n16:15 -  Removed exhaust line from the low NOx bag\r\n17:00 - Instruments started sampling\r\n17:30 - Instruments stopped sampling\r\n17:30 - Added H2O2 to low NOx bag (flowing 5 slm zero air over 120ul 50% (m:m) H2O2 within a glass trap in a 30C warm bath)\r\n18:30 - Stopped H2O2 injection\r\n18:45 - Instruments started sampling\r\n19:15 - 100% lights turned on.\r\n24:30 - 100% lights turned off.\r\n25:35 - Begin to add nebulized aerosol seeds  to the chamber (0.06M (NH4)2SO4)\r\n26:08 - Stopped adding seeds\r\n26:20 - Stopped sampling, flushed bag, switch GTHOS from low NOx to high NOx bag."
    light_flux_characterization_id: '17'
    particle_loss_characterization_id: '13'
    vapor_loss_characterization_id: ''
    data_file_original_name: '20140110_expTimeline.csv'
    oxidant_concentration_units: 'molecules_per_cubic_centimeter'
    initial_oxidant_concentration_value: '2.0e6'
    reactants:
        -
            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: []
            concentration_units: 'parts_per_million'
            functional_group_other: 'H2O2'
            initial_concentration_value: '2'
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '755'
    doi: 'https://doi.org/10.5065/m1xr-1v29'
    download_file_path: 'experiments/EXP_396.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/396'
    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_20140110_ALPHA-PINENE/hydrogen peroxide_Hydroxyl radical_No Seed_Alpha-pinene + OH, low NO, dry, (NH4)2SO4 seed at end'
    experiment_created_at: '2020-09-04 22:41:02'
    experiment_updated_at: '2021-10-07 00:50:53'
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: '2021-10-12T07:57:13.000000Z'
    time_units: 'Seconds past midnight'
    publications:
        44: 'https:/dx.doi.org/10.5194/acp-14-13531-2014'
    downloadFileSize: '52041416'
    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
16:12,Started addition of 4.4 mg alpha-pinene to the low NOx bag (6 slm zero air flowing over alpha pinene in glass vial in warm bath (30-->50C)
16:15,Removed exhaust line from the low NOx bag
17:00,Instruments started sampling
17:30,Instruments stopped sampling
17:30,Added H2O2 to low NOx bag (flowing 5 slm zero air over 120ul 50% (m:m) H2O2 within a glass trap in a 30C warm bath)
18:30,Stopped H2O2 injection
18:45,Instruments started sampling
19:15,100% lights turned on.
24:30,100% lights turned off.
25:35,Begin to add nebulized aerosol seeds  to the chamber (0.06M (NH4)2SO4)
26:08,Stopped adding seeds
26:20,Stopped sampling; flushed bag; switch GTHOS from low NOx to high NOx bag.