---
instrument_id: '415'
data_file_original_name: '130329_CIMS.csv'
skip_headers: '1'
charts: ''
headers:
    - 'exp_time(min)'
    - 'formic_acid(ppb)'
    - 'acetic_acid(ppb)'
    - 'PAA(ppb)'
    - 'mz145(ppb)'
    - 'hydroxyacetone(ppb)'
    - 'IEPOX(ppb)'
    - 'H2O2(ppb)'
dataset_id: '3413'
experiment_link: 'https://icarus.ucdavis.edu/chambers/553/experiments/600'
experiment_set_link: 'https://icarus.ucdavis.edu/chambers/553/experimentSets/215'
chamber_link: 'https://icarus.ucdavis.edu/chambers/553'
dataset_created_at: '2021-08-30 14:51:21'
dataset_updated_at: '2021-08-30 14:51:21'
instrument_link: 'https://icarus.ucdavis.edu/chambers/553/instruments/415'
instrument:
    id: '415'
    short_name: 'CIMS'
    full_name: 'Chemical Ionization Mass Spectrometer with CF3O-'
    manufacturer: 'Varian'
    model: '1200 triple quadrupole mass analyzer'
    year: ''
    data_recording_software: ''
    data_analysis_software: 'matlab'
    raw_data_time_resolution: '162 to 172 s'
    analysis_data_averaging: 'signal for the compound is normalized to the 86 signal'
    detection_limit: 'ppb'
    quantification_limit: ''
    sensitivity_to_temperature: ''
    sensitivity_to_relative_humidity: 'Must account for the water signals'
    sampling_method: ''
    sample_preparation_method: ''
    sample_residence_time_in_seconds: ''
    length_of_tubing_in_cm: ''
    flow_rate: ''
    tubing_material: ''
    chemical_identification_method: 'In this analysis, benzyl alcohol concentration comes from the 193 scan'
    data_analysis_method: 'To get the concentration of benzyl alcohol in ppb, one takes the 193 signal at a given time and divides by the 86 signal (interpolated to that exact time) and then uses that signal to compare to the calibrated ppb/normalized signal value'
    quantification_method: ''
    calibration_method: 'The 193 m/z signal (the mass of benzyl alcohol + CF3O-), which was measured every 162 to 172 s, was normalized to the 86 m/z signal (the M+1 peak for CF3O-) and used to measure the benzyl alcohol concentration. This signal was calibrated using dilutions of a 800 L Teflon bag of ~44 ppb benzyl alcohol. The concentration in this bag was verified using fourier transform infrared absorption (FT-IR) spectroscopy with a 19 cm pathlength and absorption cross sections from the Pacific Northwest National Laboratory (PNNL) database. In this way, any wall or sampling loss was accounted for since the CIMS sampled from the same volume as the FT-IR. Multiple FT-IR samples were taken until they gave the same concentration; this was to ensure a minimal effect from any compound deposited on the instrument walls.'
    calibration_drift_estimate: ''
    calibration_schedule: ''
    uncertainty_estimation_method: 'During the background collection period of ~1 h for each experiment, the standard deviation of the benzyl alcohol mixing ratio along with the uncertainty in the calibration was used to estimate the uncertainty of the initial benzyl alcohol mixing ratio. This combined standard deviation was also used as the uncertainty in the measurement of the time-resolved gas-phase mixing ratios throughout the experiment. Since the number that matters for the SOA yield is the reacted benzyl alcohol, which is the measured benzyl alcohol subtracted from the initial benzyl alcohol, the variance of the reacted benzyl alcohol is the sum of the variances of the initial and measured benzyl alcohol mixing ratios. The uncertainty reported is, then, the square root of the reacted benzyl alcohol mixing ratio variance.'
    known_interferences: ''
    link_to_supplemental_information: ''
    additional_notes: ''
    organization_id: '540'
    created_at: '2020-03-12T23:50:47.000000Z'
    updated_at: '2020-03-12T23:50:47.000000Z'
    column_descriptors: "Local time (reported at the time of signal 50, the rest of the signals are taken in the order they appear)\r\nBenzyl alcohol mixing ratio in ppb (found from the normalized signal, nan if it's not during the background or experiment period)\r\nUncertainty in the benzyl alcohol mixing ratio in ppb (found from the background and the calibrations)\r\nm/z signals for each m/z measured (these are not normalized)"
    sampling_protocol: 'Online'
    skip_headers: '1'
    tubing_inner_diameter: ''
    what_is_measured: 'Gas-Phase Compounds'
    measurement_uncertainty: 'For benzyl alcohol, this is given in the third column'
    measurement_units: 'ppb (otherwise, just signal)'

---
exp_time(min),formic_acid(ppb),acetic_acid(ppb),PAA(ppb),mz145(ppb),hydroxyacetone(ppb),IEPOX(ppb),H2O2(ppb)
0,1.309959289,0.014949788,-0.124003924,-0.037653788,-0.107839033,-0.703652447,0.098244325
3.808446782,-0.528719475,-0.100639392,-0.14432566,-0.403081785,-0.07484602,-0.449709761,-0.109090668
7.621709406,0.503445181,0.425246512,-0.063504705,0.126943363,0.167794866,-0.222508125,0.011407124
11.41449059,0.620587932,-0.273680682,0.019508046,-0.334617739,0.101137452,-0.413408952,-0.046335863
15.21748787,1.417537269,-0.405193063,-0.023630445,-0.32704353,0.183925959,0.08788917,-0.069641589
19.02481592,2.083928401,0.424643286,0.049613154,-0.093520827,0.147537181,0.883472172,0.093411587
22.86780817,0.20845304,-0.85329701,-0.304708664,-0.40585968,0.032282066,1.012711231,-0.234545101
26.69350083,0.807394002,0.966029215,-0.012210308,-0.125283587,-0.120784192,1.85193228,0.014441537
30.50255281,1.015254025,0.332167903,-0.078202964,0.568838575,0.683213293,3.135801955,-0.107776749
34.30098672,1.442205216,0.287780842,-0.088419004,0.010436799,0.169893806,4.080773722,0.050579996
38.10825545,1.125940287,1.691931906,0.023561062,0.248705604,0.289659009,5.056597386,-0.089763933
41.92150998,2.691896193,0.606293121,0.125571255,0.866506724,0.35037415,5.573167992,0.147519853
45.75967624,0.994806108,0.679652208,0.077303157,0.389343542,0.548205237,6.06819559,-0.003721831
49.55919587,1.153722486,0.407983666,0.102537311,0.017012775,0.388246778,8.462239553,-0.103485253
53.37021774,1.62688998,0.868947325,-0.031165583,-0.021283827,0.339161626,9.675136641,-0.034745619
57.18578886,1.211826292,0.811218455,0.029972218,0.490043197,0.275082921,11.741575,0.123754802
60.99783457,0.989333436,0.01721374,-0.183160682,0.189928431,0.483935047,11.65616392,-0.141199493
64.82657409,0.586854293,-0.118274835,0.001132496,0.010317987,0.694872401,12.88160296,0.067502775
68.63264497,1.187670813,0.351877286,0.019169552,0.549959075,0.463318089,13.88883938,-0.018608054
72.42510644,-0.186670214,-0.33452189,-0.274911708,-0.200095234,0.35417534,14.34242415,-0.076053719
76.21647533,1.929743802,-0.473522725,-0.064465769,0.330160313,0.509477842,16.61375885,-0.011175849
80.02634117,1.949759031,0.006637273,0.053169417,0.214027382,0.79808704,18.53138716,0.108720912
83.85750008,0.377938279,-0.091653796,0.072792099,0.388175123,0.637474479,19.37526948,0.19172875
87.66546691,1.644485289,-0.563555471,0.038236169,0.077095995,0.65283987,20.94931187,0.108948498
91.49031015,2.283033235,-0.040751265,-0.023332478,0.109605072,0.767539811,21.98127885,0.134213431
95.26864464,0.958337485,-0.201376458,0.0701733,0.318365751,0.721782962,24.20287113,0.092539476
99.07923705,0.823565739,-0.020862002,-0.008990076,0.614514602,0.99962804,24.55225913,0.248795926
102.8793294,2.179099216,-0.920215171,0.164619974,0.106197476,0.909807672,25.76065898,0.139247424
106.6829422,0.970535315,0.121451141,0.082895287,0.189506039,0.705178151,26.60428252,-0.112521561
110.4917818,1.29909203,0.34076196,0.143896713,-0.120479041,0.865500898,27.4303723,0.2309824
114.3179465,-0.080374308,-0.864375569,0.037404023,0.059664282,0.743565963,26.76824924,0.137243791
118.1607841,1.867324778,-0.060325353,0.099935874,0.542869778,1.053575925,29.07065795,0.373635511
121.9934047,0.648312589,0.33266275,-0.031445495,0.272866229,0.702857744,29.0445931,0.057726388
125.8017021,1.651915255,0.240831625,0.112971341,0.023861369,0.953157978,30.0932082,0.062987163
129.6292446,2.25427304,0.183105814,-0.079366602,0.041280201,1.121393699,30.0567398,0.060704543
133.4523476,2.142787061,0.29094477,0.020144588,0.52748343,0.900617118,30.76137235,0.209243929
137.2467186,0.989398191,0.416412047,-0.017756552,0.934545668,0.867621684,31.87180327,0.147451066
141.045163,1.960174096,-0.379864851,0.017391562,0.227462413,0.989509058,31.61020893,0.116508821
144.854004,3.636554092,0.469343298,0.221946658,0.465985794,1.125866827,33.66577794,0.330229612
148.6693194,2.070201267,0.019249448,0.134216864,0.269942728,1.158562686,33.12145803,0.172646983
152.4794622,2.345402574,0.90578568,0.047437323,0.088880618,1.060151051,34.08854581,0.215357781
156.283838,1.939137919,-0.948487886,0.113561652,0.104252441,0.934145869,32.75730565,0.107002461
160.0951272,2.654307703,1.179158053,0.059922117,0.492232412,1.052774678,35.86348525,0.297066834
163.8962829,3.919894589,0.515663256,0.268223921,0.825266636,1.138257123,36.32852563,0.355161888
167.7011115,2.547863717,-0.17629455,0.009730524,0.863326526,1.20776631,37.4254176,0.019827617
171.4908454,1.454709012,0.872939295,0.008434811,0.457387505,1.160092884,36.9323008,0.064500102
175.2853281,2.845985755,0.414347446,0.142440807,0.778748787,1.231568607,37.68159511,0.172227918
179.0852259,2.253953684,-0.843926475,-0.108410207,0.677537937,1.188202842,39.07747848,0.110696635
182.8832416,2.707821423,-0.057077405,0.124457675,0.373826402,1.115776821,39.57750477,0.291039779
186.7082638,2.419469149,0.43541411,-0.101691725,0.631665547,1.208509667,40.3138566,0.216872884
190.5189659,2.639511308,-0.204119661,-0.022719953,0.611267507,1.100108126,41.76945816,0.101791277
194.3323762,2.824176327,0.202192974,-0.096643553,0.695255946,1.128573036,41.28210589,0.119884551
198.1403632,3.210804605,0.60598948,-0.087233619,0.676775359,1.340167199,41.41073306,0.125746249
201.9475408,3.323919043,0.319705903,0.063360837,0.728707943,1.334305792,42.46391221,0.267673348
205.7707067,3.615736976,0.70762969,0.057915353,1.529389473,1.28098382,43.45777774,0.247406567
209.5792559,2.498467416,1.307066035,-0.027384651,0.52901039,1.359560448,43.72580013,0.331089422
213.3891271,3.518949385,-0.026874508,0.032260184,0.710478211,1.406418795,43.31095044,0.214662416
217.1833343,3.276346024,0.009475751,-0.054551796,0.722481917,1.178004682,44.46314109,0.253932093
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