---
instrument_id: '415'
data_file_original_name: '130904_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: '3432'
experiment_link: 'https://icarus.ucdavis.edu/chambers/553/experiments/606'
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 15:16:46'
dataset_updated_at: '2021-08-30 15:16:46'
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)
0,1.052517887,0.390535806,0.066115032,0.12093927,-0.022724304,-0.711601504,-0.037836891
3.835161221,1.825979754,2.172633645,-0.036332204,2.201627714,0.114474989,11.00067723,0.031312038
7.656865512,1.487679442,-0.092283837,0.292671704,0.342009074,0.096959716,19.3862884,0.341840936
11.48815404,1.464392299,0.863276288,-0.015633034,0.088557277,0.119368178,20.7410085,3.326576231
15.3281788,-0.456003831,1.810220292,0.107174621,0.06972032,0.136978589,12.48818334,5.475220612
19.16231617,0.539125112,2.815079841,-0.119260905,-0.082002528,0.019321702,19.96276721,5.225168334
22.99987987,2.019495838,3.331636573,0.019891591,0.59694065,0.074033509,20.88721265,4.364079614
26.80327805,1.891339504,2.189475876,0.083274953,0.494613184,0.316958017,22.3440048,3.042379448
30.60467484,1.440154053,2.364442108,0.151250899,0.121125471,0.085445129,23.90173663,1.958565281
34.4300099,-21.41233856,-11.77867449,-5.550412076,-7.154575824,-5.876970291,0.966098328,-2.121678228
38.25160594,7.907470955,5.565614474,1.555781938,2.651783386,1.83952548,37.80885381,1.821633864
42.07906403,-1.1065391,1.276894565,-0.458757944,-0.315282338,-0.306740951,22.44568677,0.238800755
45.9568613,1.212585649,1.514942779,0.279961179,0.474178992,0.306779979,22.55111908,0.465619704
49.80088069,1.785575442,1.853795884,-0.011974865,0.729308922,0.032572131,43.83529509,0.224522046
53.65736914,0.848101918,1.58101173,-0.035734648,0.785153178,-0.000736692,41.96588475,0.263502587
57.47140091,0.995232061,1.9354049,-0.063761592,0.486101095,0.209233417,42.0902198,0.164702688
61.28802184,2.241350728,1.571290431,0.05457985,0.485163019,0.273870717,41.18497285,0.128537739
65.13567054,1.49294697,1.965063028,0.124884655,0.810868995,0.155869629,38.97863885,0.241957717
68.95511353,0.76097172,6.354114146,-0.143239588,3.555285789,0.584927394,47.19294287,0.121541427
72.78808944,4.212152674,3.532534902,0.180263352,2.143589595,0.499962164,39.23575293,0.061998716
76.60684686,2.533714785,1.640835948,-0.0053503,1.419027246,0.109117016,35.53565416,0.143268524
80.44031939,4.449550649,2.318080695,0.216460468,1.391753519,0.163792623,43.39833521,0.241820404
84.28048936,1.496568289,3.274163173,0.040049841,0.786947412,0.152049679,46.9857559,0.230643994
88.12821155,1.539307557,1.540663218,-0.142876574,0.852378042,0.161016362,40.94111436,0.041489314
91.93801997,3.618902185,2.906008216,-0.087839567,1.253079161,0.292757326,54.27019174,-0.002222887
95.75528878,1.119246537,2.52940965,-0.054421785,1.178759695,0.37478772,50.6382598,0.164992397
99.57381493,2.972439918,2.440314707,-0.004526785,1.720712464,0.326879617,52.56025045,0.13275245
103.4267493,2.938231281,2.092023873,0.020008347,1.314334618,0.279257832,57.2607282,0.200601293
107.2622322,1.799814141,1.978509959,0.141533229,1.407427156,0.275908924,55.34821745,0.084047074
111.0736583,1.813305761,1.812379305,-0.172576823,1.169994372,0.128370016,52.96686769,-0.021266413
114.8864395,1.469165425,1.377289714,-0.008453685,1.522363362,0.346595119,55.6617176,0.317968209
118.7069895,3.24321392,1.199886824,-0.013442424,1.501834448,0.207516752,69.94773046,0.16032045
122.5316915,1.787900599,2.713057566,-0.028903234,1.555957009,0.096266218,72.48562616,0.194991177
126.3576922,3.593256061,1.446185938,-0.070435718,1.42625599,0.321482008,68.92827302,0.052367915
130.2069516,0.574181026,1.708604289,-0.043178853,1.479046039,0.240673268,67.80009858,0.107675613
134.0554149,2.897162608,2.56283395,0.134820503,1.866326419,0.310148724,68.81368802,0.100880182
137.8902793,3.044042864,0.343839127,-0.123363241,1.210991518,0.126046926,72.47626831,0.084160693
141.7433309,2.308580705,1.082609823,-0.091509818,1.438657256,0.341782379,65.46714532,0.11735129
145.5838811,2.815936905,1.892368461,-0.001235426,1.505176199,0.353601055,67.12850447,0.223031381
149.4125907,3.327581818,1.787922202,0.054883501,1.294987312,0.182928179,70.1088822,0.140283437
153.2400526,1.662420382,1.620183394,-0.088998779,1.092388183,0.152550763,75.51605281,-0.121041145
157.0553539,2.128552682,2.505272452,0.155539183,1.033314813,0.32430565,69.47891905,0.121453844
160.8699055,3.025871643,1.564071747,-0.008132614,1.344983051,0.222731741,75.9882566,0.084234195
164.708757,2.258112874,1.995825507,0.057805765,1.215726183,0.133201302,69.00331605,0.094284288
168.5566252,3.773583152,1.860238037,0.020608867,1.438745678,0.198084333,69.24932318,0.186805952
172.3940755,2.766193707,1.73265523,0.016107669,1.583718593,0.206588877,66.76370511,0.198527014
176.2214526,5.974366943,8.235485041,0.292292355,3.77089741,0.774717567,78.55707722,0.300362296
180.0902275,5.586071621,6.236045997,0.055337657,1.872047985,0.690282473,74.75653213,0.113981471
183.9127502,3.945954086,4.054648192,-0.002323204,1.755638145,0.518260602,64.3208443,0.090742108
187.7404007,5.044377523,2.868526663,0.015362816,2.409077854,0.467275257,61.12703067,0.023860857
191.5880931,4.372995925,3.814308341,0.201202538,1.73269104,0.657905225,61.52106726,0.151801645
195.4119899,4.760014332,2.945820738,0.034915267,1.68273992,0.509427151,56.87618213,0.182038914
199.2550965,4.437090444,3.038597721,-0.144345296,1.876662925,0.399127573,54.91954331,0.189864459
203.0898865,2.643394522,2.89103698,0.022810689,1.602270894,0.494370903,58.86318251,0.267819849
206.9036239,3.746463548,4.480581034,0.044064604,2.059355195,0.426947586,61.11133209,0.212180283
210.728302,3.934486029,2.122266195,-0.032540517,1.748287595,0.286432915,58.65078201,0.197866098
214.5736502,3.568298681,2.477253723,0.073089402,1.790790673,0.393464514,55.45949399,0.302180124
218.4135281,2.286102507,3.016571438,-0.022470264,1.272711834,0.178847036,53.62427226,0.171402692
222.2380378,2.444221029,1.546131817,-0.021213483,1.812372484,0.452777225,54.14814219,0.136819882
226.0569356,4.440513395,2.702598841,-0.00470532,1.488113098,0.423887548,54.89611562,0.08399844
229.9136952,3.259340004,2.424450694,-0.078219058,1.606957938,0.26840633,56.93827037,0.132499387
233.7413941,2.770093409,2.155532415,0.069900511,1.659279449,0.181653292,56.79864485,0.22676821
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