---
instrument_id: '415'
data_file_original_name: '130605_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: '3423'
experiment_link: 'https://icarus.ucdavis.edu/chambers/553/experiments/603'
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 15:06:58'
dataset_updated_at: '2021-08-30 15:06:58'
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)
0,0.480597716,0.328144661,0.077361006,0.598941269,-0.033345173,0.104925381,2.020280699
3.897121782,1.526431787,0.196020389,-0.009764391,0.026443181,-0.023872427,-1.456729151,1.643457248
7.738583498,0.670535333,1.233704201,0.207925313,0.571676487,0.080177877,-0.620875495,2.163148283
11.60679934,0.777527299,-0.066349515,0.103789691,0.433354914,0.063826078,-2.125919355,2.409077156
15.47523135,0.571314447,0.936867375,0.055486628,0.2055735,-0.102734101,-2.943273296,2.424153744
19.35957211,0.308819084,0.071007173,-0.046476188,1.11488511,0.045962158,-2.569045488,2.842480256
23.21815173,-0.589602027,-0.139478137,0.16685445,0.828504721,0.095475966,-3.051775561,3.226692289
27.09518952,0.844694264,-0.017885819,0.101923586,1.271825171,0.051014636,-1.553464603,3.34299322
30.98346122,0.162208926,0.805133849,0.067684317,1.062066484,0.000418394,-1.262532674,3.649893579
34.85722599,1.069352163,-0.305545366,0.164925545,1.554547202,0.215135654,0.628518141,4.574905618
38.71701114,2.495272952,1.204590408,0.054206326,1.518052093,-0.051415924,1.606058811,3.402656603
42.60831584,0.497828627,1.01715574,0.067672415,1.353351844,-0.163503737,3.326988557,3.866316237
46.49950668,-1.939437946,0.693897262,0.021649687,1.524361276,-0.160897414,6.218100188,4.169284549
50.3401948,1.492102103,0.797305163,0.014080975,1.225237626,0.0804284,7.781882434,4.202659816
54.21545965,0.658105151,0.149411784,-0.05313423,1.41017225,-0.094865708,9.652801149,4.107848853
58.07674926,0.786109472,0.112439756,-0.010932051,1.532853485,-0.083989076,13.19591393,3.125933459
61.94598969,-1.043529458,0.313830787,-0.0653456,1.204338952,-0.046945068,14.36047255,3.674124771
65.81961114,1.450559513,0.442426754,-0.076781767,0.79176402,0.010841974,17.39269025,4.276464428
69.68998399,1.565822007,1.244420304,0.083932694,2.389895584,0.222776116,22.47986341,4.505765903
73.53246196,0.636759999,-0.236530862,0.024901274,1.478673033,-0.036985066,24.38374865,4.128653047
77.38403317,0.235346724,0.861534941,-0.05673931,1.680099992,0.059953145,26.67001359,3.913326767
81.26365817,0.009483037,0.815906224,0.057857042,1.543890499,0.059716545,31.45967898,4.952155875
85.11938432,2.788960808,0.64521105,0.079445594,1.811481937,0.216189178,31.90883608,4.663418098
89.0057288,0.982306825,0.867048164,0.027739999,1.855708715,-0.031233991,31.59253522,3.401369538
92.87342335,0.400952914,1.384043686,0.015219898,1.459157943,0.02005245,33.18152755,4.948289137
96.76153086,1.876280106,0.752807738,-0.091833697,1.603534402,-0.05254299,33.28960744,4.760983418
100.6117814,1.189949364,1.056814042,0.039720097,1.731725148,0.046739229,33.48830803,3.985742277
104.4579405,1.708491158,0.145785968,0.068051734,2.227970437,0.024110006,35.72794265,4.151561439
108.334506,1.484822104,0.582458833,0.040883395,1.846061732,0.040478548,33.90802227,4.376154583
112.1980502,2.48054986,0.781833135,0.091263128,1.964611615,0.023202136,36.89857565,4.198711636
116.0806625,1.345919496,1.239813135,0.004012412,1.627114489,0.020355877,37.64650141,4.446858966
119.9447572,1.549251233,1.251947177,0.002365432,1.907719551,0.029262723,39.38733413,5.002110935
123.8326969,1.541660608,1.135720171,0.219453356,1.908290396,0.11751365,42.45002348,4.57399871
127.6598595,2.050675191,1.914736375,0.012253157,1.806167319,0.278004374,45.01679043,3.887565199
131.5381198,1.782695644,1.385135516,-0.043386317,1.933751736,0.099310862,47.4386304,3.757231156
135.4251692,1.95771024,0.364852618,-0.016107833,1.599817547,0.021476898,49.46931207,4.175106084
139.2926536,1.470241023,0.639714899,0.070950982,1.974318034,0.083280196,52.73298993,3.811579397
143.1444983,2.02793833,0.720796336,0.007519803,1.863932931,0.169139108,54.95124694,4.1474826
146.9862584,1.159934386,0.724973949,-0.059771732,1.535094416,0.100690121,58.52201325,3.814820322
150.8651735,2.966004467,0.935745695,0.021085049,1.801032462,0.083491403,59.13530043,4.348713346
154.7538585,1.263765671,0.98705048,-0.062702063,1.350203722,-0.14365859,59.07337385,3.193218709
158.6599216,1.637703661,0.997101215,0.067468594,2.088982359,0.193829566,64.11494297,4.101119136
162.5436587,2.852338366,0.56759195,0.163243817,2.245526697,0.117449675,65.58034332,3.918930487
166.4003628,1.586100655,0.087788039,-0.110123262,1.565274889,0.002175114,64.51918137,3.4871836
170.2762667,2.006020393,1.377296385,0.069057432,2.004412725,0.234919747,67.81055211,3.678622657
174.1202835,2.631715071,1.019524958,0.12027171,1.137676946,0.300004563,71.9863266,3.66190418
177.996903,1.315495805,1.516094077,0.023620365,1.440937257,0.12299424,71.56257811,3.362481859
181.8715601,2.87882841,2.031168229,0.082412992,1.807686084,0.099891202,73.93147992,3.643190356
185.7243389,2.056667821,1.970337906,0.163118714,1.926987458,0.174415056,74.9797962,4.222711919
189.6134097,2.764477442,1.07245202,-0.060527196,1.518408701,0.20423211,72.98250741,3.197948996
193.5110687,2.286497871,1.096605899,0.056285509,2.178588424,0.145567826,75.76232583,3.136229498
197.387605,3.219754154,1.208501316,0.116605438,1.936421659,0.144712775,78.58196003,3.048834267
201.2802396,2.704247968,0.879629743,-0.111125678,1.791351907,0.044289602,78.87642541,3.598833916
205.1662594,1.622650166,1.327620329,0.16576508,1.958031693,0.187295932,81.60010379,3.319122155
209.0862688,2.263313134,0.814610448,-0.020424932,1.484625077,0.177971551,77.86795908,2.794858229
212.943263,1.46457058,0.785000664,0.100323386,1.691306034,0.177517203,82.35177293,3.091300746
216.8077313,1.3288335,0.987293939,0.052878761,1.931572228,0.222223245,82.45929294,3.193377516
220.6995718,1.399808749,1.380344866,0.020753519,1.028354105,-0.046666206,82.6824415,3.720005835
224.6047951,2.662066329,1.115774467,0.126134947,1.945036594,0.210337067,85.59316003,2.975930127
228.4500567,3.132321392,1.301821367,0.092832565,1.532245457,0.107472374,84.94943907,3.393876662
232.3162435,2.710587125,1.547269888,0.083833158,2.481667936,0.232617891,86.98361635,3.456734716
236.1683447,2.684628251,0.469832251,-0.064341078,1.711355336,0.183914072,87.8671241,3.539197862
240.047114,2.849861622,1.406894444,0.097231528,1.972781606,0.23933926,89.61607464,3.015682837
243.9061559,2.426740968,1.051695233,0.097521151,2.06394891,0.157045073,92.29784206,2.826720642
247.7759017,2.463353118,1.419971682,0.059074253,1.81131348,0.132825163,91.13849961,3.169861103
251.6448495,3.873368917,1.307007403,0.169307633,2.025646486,0.231449191,88.78829253,3.004504246
255.5114604,2.284873816,1.920710471,0.131860815,1.591859953,0.210063551,93.00553309,2.592563496
259.3679941,2.349231749,0.479558028,0.051233971,2.017472153,0.381373635,90.62394693,2.854243441
263.2281109,3.850978632,1.747264927,0.209762904,1.762118901,0.176982769,88.1629565,3.109246603
267.1218733,2.312275493,0.970474899,0.077953236,1.402100428,0.051949117,89.16039979,2.087867905
270.9992265,1.955780699,1.016987608,0.021975373,1.876643849,0.236066068,89.03963135,2.500498055
274.8551806,3.006532617,1.622016701,0.11731085,1.49691444,0.133992045,86.68066084,2.591211346
278.6825128,3.587088697,1.030806654,0.073785372,1.642208214,0.275774008,90.18055388,3.039619093
282.5365818,3.124785494,1.222056626,-0.022183956,1.793052615,0.158013251,86.17143316,2.495377696
286.4153411,2.234327605,1.468399581,0.06448596,1.584927763,0.187686642,88.576182,2.471913292
290.2993132,1.569558176,0.389911583,0.039314086,2.238674406,0.04475878,85.96760487,2.199170128
294.1509681,3.440437713,0.561641679,0.020518982,1.774518169,0.175348017,86.031901,2.138473831
298.0033807,2.761646889,1.869609811,0.081878414,2.030485931,0.286831608,84.18016076,2.458117825
301.8976856,3.549700234,1.452157323,-0.080595891,1.695175936,0.182212546,82.30455504,2.976986578
305.7801073,3.050173661,1.674661248,-0.048988071,1.635635707,0.235809758,81.50000178,2.37981366
309.6411037,2.749629738,1.623471866,0.099848717,2.001542411,0.14436024,81.97746138,2.379750669
313.4925568,3.535663084,1.480330842,0.123566942,1.583805912,0.237625834,79.38669018,2.902487895
317.3498053,3.274483603,1.858318555,-0.102345877,1.57604049,0.130541094,78.40983877,3.170305031
321.2235119,4.126268879,1.691429985,0.121895326,1.796082489,0.298598618,83.9038832,2.67840893
325.1205238,2.280145304,0.918578069,-0.028550392,1.366714171,0.115823689,82.54096925,2.196680303
328.9950479,4.421862646,1.670365128,-0.059369754,1.762633802,0.214635366,80.54172686,2.577654483
332.8582314,2.454109949,1.251778952,-0.062040525,1.056795583,0.298165505,82.14441046,1.559264075
336.7242039,2.730040073,1.779514387,0.119349379,1.604794557,0.202165657,82.0168837,2.501272247
340.587333,3.369054445,1.006526499,0.106704149,1.390127308,0.339362521,83.30602703,1.761401229
344.443649,4.252259329,0.949100358,-0.007338989,1.432481412,0.214178501,80.64705171,2.319399641
348.3436309,3.882918446,1.374681911,-0.009636399,1.300882365,0.275581364,80.73445275,1.639174442
352.235715,3.242465044,1.912501571,-0.003034423,1.489000879,0.198065068,80.94380225,2.051556695
356.1074548,3.276639267,1.506366956,0.045461198,1.688575022,0.164967072,78.80425683,2.322016345
359.9487479,3.187949787,1.170093549,0.06251805,2.095554707,0.257425586,78.72267488,1.741556318
363.8737414,3.784182417,1.115427703,0.115722748,1.716130933,0.156225982,77.10176857,2.142908394
367.7467691,3.326824324,1.58805515,0.018032404,1.935479502,0.386566981,77.61386822,1.480867448
371.5988116,3.788319398,1.485266907,0.10139132,1.491555126,0.289429674,76.29589253,1.545659781
375.4363068,4.324540662,1.355250197,0.113464416,1.798743439,0.173514643,75.65666266,1.820966451
379.284104,2.522128734,0.969492184,0.214820881,1.351365891,0.168525309,74.48887603,1.49981147
383.1596979,4.757118418,1.271558794,0.141143041,1.720834622,0.164183039,75.07595807,1.570827304
387.017223,3.754365284,0.786653779,-0.060044587,1.639275871,0.129021981,73.93643784,1.605467453
390.8787715,4.316747968,1.73613642,0.020801052,1.632087973,0.027520688,73.07228197,1.451747551
394.7308634,2.811797101,0.680953922,-0.07370977,1.179427375,-0.003829607,71.14729168,0.667684623
398.5900408,4.787448493,1.384044973,-0.003096726,1.530027319,0.173485005,70.17956013,1.425430331
402.4722777,3.170718514,1.461750363,-0.078282094,1.23079791,0.053166912,68.46518881,0.571457935
406.3523217,5.566951014,2.583574551,0.109580306,1.911720317,0.310173799,71.58981435,1.703648398
410.2113144,4.496606389,0.955327254,0.024644457,2.169371854,0.18550329,70.71614104,1.015447744
414.0751037,3.328321399,1.498393275,-0.072021367,1.373612346,-0.062343226,68.76087972,0.614003829
417.9570256,3.973211044,1.073467921,0.008628043,1.403521156,0.130211428,69.72310073,2.125270314
421.8072899,5.094248402,1.164481116,0.100700647,1.741874652,0.231357807,71.08535094,1.236582732
425.6431098,2.811303254,1.086113689,-0.011277084,1.424581998,0.157195124,71.27891857,0.896158155
429.5104912,3.735632101,1.349829247,0.072732123,1.768977915,0.135973948,69.92067643,0.648113887
433.4149144,4.117071488,1.362992214,-0.099854471,0.968874927,0.137826366,68.76502749,0.499653364
437.3140125,3.253926455,1.933708099,0.094039686,1.42049949,0.092106284,68.31246529,0.84663039
441.1830992,5.811167377,1.768885842,0.107167447,1.962609581,0.199615077,68.32376496,1.810956973
445.066157,5.178906951,2.366485705,0.192719891,1.788163099,0.208052107,69.5530383,1.748833047
448.9381375,4.357229419,1.957295845,-0.054089565,0.993630316,0.22193812,68.74477386,0.591546983
452.7964299,3.393181575,1.696686451,0.110815477,1.349743721,0.150547441,69.384575,0.698418643
456.6694154,4.550595808,2.162382661,0.162860512,1.393683695,0.135302203,67.98051639,1.009394451
460.5373635,2.467968138,1.54118464,-0.006055201,1.552960003,0.100072912,68.15828193,0.574433356
464.4209771,3.105347151,0.831243788,-0.059647511,1.414578913,0.112098935,67.38753962,0.150004038
468.2924062,4.414718818,1.464986819,0.076444427,1.864835495,0.129298029,69.08736634,0.538539656
472.1496454,4.647875406,1.304843646,0.046665868,1.599256375,0.19270214,70.7935521,0.549741381
476.0451041,3.004775945,1.926753455,0.090750409,1.095246975,0.137059712,72.85183547,-0.072815309
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