---
experiment:
    id: '410'
    experiment_category:
        - 'Gas phase chemical reaction'
    experiment_date: '2014-01-30'
    temperature: '26'
    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: 'NO'
    ro2_lifetime_seconds: ''
    experiment_goals: 'Explore the gas-phase chemistry of pinonaldehyde when HO2, NO, and NO2 are all present.'
    experiment_summary: 'Synthesized pinonaldehyde was added through a heated line for a few hours to get enough into the bag. This was the first time we had injected pinonaldehyde and learned that next time, we shouldn''t heat the injection line or the bulb because that facilitates the oxidation of pinonaldehyde to pinonic acid. Thus both were injected at initial mixing ratios of ~ 15 ppb (with a fair amount of uncertainty) to ~ 10-20 ppb pinonic acid (also with uncertainty). The pinonic acid is expected to react with OH about 4 times slower than pinonaldehyde, although there is a channel for the production of pinonic acid from the pinonaldehyde photooxidation as well. After initiating OH oxidation by methyl nitrite photolysis, CF3O- CIMS observed that almost all of the carbon ended up as the PAN of pinonaldehyde (which Geoff calls"PiPAN"). Perhaps due to the high formation of the PiPAN, we observed high amounts of nucleated organic aerosol (~ 40 ug/m3 at the end of the experiment). At the end of the experiment, most of the pinonaldehyde was gone, but more than half of the pinonic acid was left (perhaps because it''s produced as well as lost through OH oxidation). We injected methyl nitrite twice, to replenish the OH. At the end, lights were turned off and the bag was flushed within 20 minutes.'
    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 - up\r\nFOR LIF - up\r\nI/A CIMS - up\r\nNCIMS - up\r\nRHTO3 - up\r\nGC FID - up\r\nAMS - up\r\nTQC1 - up\r\nTQC2 - up\r\nTOFCIMS - up\r\n\r\nBag Additions:\r\nPinonaldehyde ( > 95% purity), ~ 15 ppb (may be revised)\r\nPinonic acid =  10 - 20 ppb (may be revised)\r\nCH3ONO ~ 45 ppb (first addition) ; ~ 250 ppb (second addition)\r\n\r\nTimeline (UTC, hrs):\r\n17:45 - Far bag capped\r\n18:00 - Injecting pinonaldehyde, heating bath at 60 degC\r\n19:30 - Switched to heating with heat gun\r\n20:20 - Added more pinonaldehyde\r\n21:00 - Stopped heating all-together\r\n22:00 - Mostly everyone is sampling now\r\n22:12 - Added methyl nitrite (CH3ONO 1.602 torr in 500 mL @ 22 degC)\r\n22:27 - Stopped injection, pulsed mixing air\r\n22:30 - UV lights on (10% intensity)\r\n24:55 - Lights off\r\n24:58 - Added methyl nitrite (CH3ONO 8.03 torr in 500 mL @ 22 degC)\r\n25:20 - UV lights on (10% intensity)\r\n26:20 - Lights off\r\n26:43 - Flushing Far bag"
    light_flux_characterization_id: '19'
    particle_loss_characterization_id: ''
    vapor_loss_characterization_id: ''
    data_file_original_name: '20140130_expTimeline.csv'
    oxidant_concentration_units: 'molecules_per_cubic_centimeter'
    initial_oxidant_concentration_value: '3.5e6'
    reactants:
        -
            is_aerosol: ''
            pubchem_cid: '17616'
            reactant_name: 'PINONALDEHYDE'
            not_in_pubchem: ''
            functional_group:
                - 'Aldehyde'
                - 'Ketone'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '15'
        -
            is_aerosol: ''
            pubchem_cid: '10130'
            reactant_name: 'Pinonic acid'
            not_in_pubchem: ''
            functional_group:
                - 'Ketone'
                - 'Organic acid'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '15'
        -
            is_aerosol: ''
            pubchem_cid: '12231'
            reactant_name: 'Methyl nitrite'
            not_in_pubchem: ''
            functional_group:
                - 'NOx'
            concentration_units: 'parts_per_billion'
            functional_group_other: ''
            initial_concentration_value: '45'
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '750 Torr'
    doi: 'https://doi.org/10.5065/9awv-4t43'
    download_file_path: 'experiments/EXP_410.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/410'
    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_20140130_PINONALDEHYDE/Pinonic acid/Methyl nitrite_Hydroxyl radical_No Seed_Pinonaldehyde + OH, moderate NO, dry, no seeds'
    experiment_created_at: '2020-09-08 10:36:15'
    experiment_updated_at: '2021-10-06 00:56:14'
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: '2021-06-09T21:19:45.000000Z'
    time_units: 'Seconds past midnight'
    publications:
        44: 'https:/dx.doi.org/10.5194/acp-14-13531-2014'
    downloadFileSize: ''
    download_file_path: ''
    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
17:45,Far bag capped
18:00,Injecting pinonaldehyde; heating bath at 60 degC
19:30,Switched to heating with heat gun
20:20,Added more pinonaldehyde
21:00,topped heating all-together
22:00,Mostly everyone is sampling now
22:12,Added methyl nitrite (CH3ONO 1.602 torr in 500 mL @ 22 degC)
22:27,Stopped injection; pulsed mixing air
22:30,UV lights on (10% intensity)
24:55,Lights off
24:58,Added methyl nitrite (CH3ONO 8.03 torr in 500 mL @ 22 degC)
25:20,UV lights on (10% intensity)
26:20,Lights off
26:43,Flushing Far bag