---
experiment:
    id: '94'
    experiment_category:
        - 'Gas phase chemical reaction'
    experiment_date: '2014-01-06'
    temperature: '25'
    relative_humidity: '5'
    seeded_experiment: ''
    type_of_seed: 'No 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: "Explore OH yield, product formation (carbonyls, peroxides, organic acids, and others), and Ozone-related GTHOS interference. \r\nInvestigate any instrumental interferences of high ozone levels."
    experiment_summary: 'Experiment went well, lots of products were made, both by OH and O3 + isoprene chemistry. A significant amount of the isoprene mass was converted to hydroxymethylhydroperoxide (HMHP) at this RH, as expected based on previous CIT measurements. Experiment time was shorter than hoped, due to bag volume depleting too quickly. LIF OHR instrument was taken off bag at 1.5 h mark to conserve bag volume. The "end" of the experiment was when CF3O- CIMS saw that product formation stabilized and when PTRMS and GC-FID saw that isoprene was all gone - this happened at approximately 16:15. At reaction end (although it''s technically still going in the bag), we did a test for some instruments to see if sampling directly from a port into the chamber gives the same answer as from a common sampling line. For I/A CIMS, CF3O- CIMS, and PTRMS, there does not appear to be significant differences. For O3/NOx, there appears to be a difference in the beginning of sampling, and these instruments now will be on their own line when O3 measurements are more critical. AMS reports losing ~ 30% of particle mass through a longer inlet. GC-FID tested out trapping methods, with limited success but will continue to work on it. The flow rate through LIF OHR was higher than expected, but this will be worked on tomorrow when this instrument will be off. At the end of the experiment, UV lights were also turned on at 100% for ~40 min. Photolysis of some species seen by CF3O- CIMS was observed. CRM OHR was not on the bag today, but at the end of the day reported success in measuring OHR of pyrrole and expects to be on tomorrow. Preparations for upcoming experiment, starting this evening, started approximately 19:00.'
    additional_notes: "Instrument Status:\r\nTD LIF - up\r\nPTRMS - up\r\nGTHOS - up\r\nLIF OHR - up, measuring partially, down tomorrow to tune sampling flow\r\nCRM OHR - down today, up tomorrow\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 - up\r\nAMS - up\r\nTQC1 - up\r\nTQC2 - up\r\nTOFCIMS - up"
    light_flux_characterization_id: '17'
    particle_loss_characterization_id: '12'
    vapor_loss_characterization_id: '6'
    data_file_original_name: '20140106_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: '91'
        -
            is_aerosol: ''
            pubchem_cid: '24823'
            reactant_name: 'Ozone'
            not_in_pubchem: ''
            functional_group: []
            concentration_units: 'parts_per_billion'
            functional_group_other: 'Oxidant'
            initial_concentration_value: '615'
        -
            is_aerosol: ''
            pubchem_cid: '962'
            reactant_name: 'Water'
            not_in_pubchem: ''
            functional_group:
                - 'O-heterocycle'
            concentration_units: ''
            functional_group_other: ''
            initial_concentration_value: ''
    skip_headers_timeline: '1'
    condensation_sink_rate_coefficient: ''
    is_draft: ''
    pressure: '750 Torr'
    doi: 'https://doi.org/10.5065/pfd3-mp33'
    download_file_path: 'experiments/EXP_94.zip'
    experiment_link: 'https://icarus.ucdavis.edu/experiment/94'
    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_20140106_Isoprene/Ozone/Water_Hydroxyl radical_No Seed_Isoprene + OH + O3, low NO, dry, no seeds'
    experiment_created_at: '2020-01-13 23:28:15'
    experiment_updated_at: '2023-08-22 00:50:24'
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: '2023-08-22T07:55:55.000000Z'
    time_units: 'Seconds past midnight'
    publications:
        44: 'https:/dx.doi.org/10.5194/acp-14-13531-2014'
    downloadFileSize: '52041544'
    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 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: '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'

---
Time (America/Los_Angeles),Action
8:25,Start NO/CO span 2|20|off|35.0
8:40,NO 84.96 Nox 87.4 CO 16.46
,Start GPT span 2|20|0.7|35.0
8:55,NO 61.52 Nox 86.91 CO 16.46
,Start O3 span 2|20|0.7|off
9:29,O3 35.89
,Start E-W-Z sampling
9:30,Fill air off
9:54,Air Handler on Heater on
9:32,Inject 100uL PFH into both bags
9:46,Inject 380uL H2O2 to both bags at 50~70C
10:14,Inject 20uL DEGEE to both bags at 71~95C
11:00,Mix E-W bags for 10 mins
11:14,Close valve 14
11:15,Inject (2.532-0.025) torr x 0.253L NO to East bag
11:23,Mix East for 1 min
,GC2 sampling until 11:10
11:53,Only see 4ppb on East
,Inject (1.659-0.03) torr x 0.253L NO to East bag
12:03,Mix East for 1 min
12:15,"BLs on, Heater off"
15:05,AMS on East
,Valve not open until 17:50
18:47,"BLs off, Air Handler off"