Experiment: 2014 FIXCIT Study_20140105_4-hydroxy-3-nitrooxy ISOPN/hydrogen peroxide_Hydroxyl radical_No Seed_Blank H2O2 + hv (high-NO "far" bag) and isoprene hydroxynitrate calibrations

Experiment

Name: 2014 FIXCIT Study_20140105_4-hydroxy-3-nitrooxy ISOPN/hydrogen peroxide_Hydroxyl radical_No Seed_Blank H2O2 + hv (high-NO "far" bag) and isoprene hydroxynitrate calibrations
Date: 2014-01-05

Organization
2014 FIXCIT Study

Chamber
Seinfeld chambers

Experiment Set
FIXCIT experiments

Goals
Measure the background concentrations created by exposing the bag to OH. Sample ISOPN pillow bags. Interested mainly in: -what signals do the instruments see with no added VOC. -which instruments observe signal from the ISOPN, and is their response linear to different ISOPN concentrations.

Summary
Today we successfully ran a blank experiment (H2O2 added, no added VOC) in the high NOx bag. Instruments took turns coming off the blank experiment to sample pillow bag standards of the 4-OH, 3-nitrate isoprene hydroxynitrate provided by the Cohen and Shepson groups. The Cohen group bag was 13 ppb and the 3 Shepson bags were 47 ppt, 103 ppt, and 283 ppt.

Additional Notes
Instrument Status: TD LIF - up PTRMS - up CRM OHR - up GTHOS - up LIF OHR - down NO CL - up GLY LIP - down FOR LIF - down I/A CIMS - up NCIMS - up RHTO3 - up GC FID - up AMS - up TQC1 - up TQC2 - up TOFCIMS - up Bag Additions: H2O2, ~2ppm (140 uL 50% H2O2) Timeline (UTC, hrs): 16:50 - fill and cap bag 17:02 - start sampling bag 17:35 - all instruments stopped sampling (except GTHOS) 17:45 - H2O2 injection begun (140 uL, 35 C bath) 17:47 - more air added to bag 18:55 - H2O2 addition done 19:00 - Instruments begin sampling 19:35 - turned on half UV lights (1,2,3) 22:14 - UV lights off to check bag volume 22:18 - UV lights on 24:35 - UV lights off 25:05 - done sampling, air added to bag

Experiment Details

Categories:

  • Blank/Control
Temperature: 24-27
Relative Humidity: 5
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 5
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 2.0e6 (molecules_per_cubic_centimeter)
RO2 Main Fate: HO2
RO2 Lifetime: (Seconds)
Pressure: 750

Data Sets

ID Instrument File  
1072 TOF-AMS (Low Resolution) 20140105_AMS.csv
1073 GTHOS_HO2 20140105_HO2.csv
1074 GTHOS_OH 20140105_OH.csv
1075 NO-CL FIX-NCAR_NO_CL-NO_Chamber_20140105_RA.csv
1076 RHTO3NOx FIX-CIT-RHTO3NOx_Chamber_20140105_RA.csv
1077 GC-FID FIX-CIT-GCFID-VOCs_Chamber_20140105_RB.csv
1078 TD-LIF D20140105_TDLIF.csv
1079 OHR-LIF 20140105_LIFOHR.csv
1080 NO3-TOF-CIMS 20140105_NO3CIMS.csv
1081 CF3O TripleQ-CIMS 20140105_TRIPCIMSmerge.csv
1097 CF3O-TOF-CIMS 20140105_TOFCIMSmerge.csv
1323 I-TOF-CIMS 20140105_ICIMS.csv

Data Set plots
Choose a file: Choose the X-Axis:

Experiment Set Details

Name: FIXCIT experiments
Time format and units: Seconds past midnight
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, α-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.

Collaborators:

  • Allen H. Goldstein UC Berkeley
  • William H. Brune Penn State University
  • Ronald C. Cohen UC Berkeley
  • Delphine K. Farmer Colorado State University
  • Manjula R. Canagaratna Aerodyne
  • Douglas R. Worsnop Aerodyne
  • Jose L. Jimenez University of Colorado Boulder
  • Frank N. Keutsch Harvard
  • Saewung Kim UC Irvine
  • Alex B. Guenther UC Irvine
  • John E. Mak SUNY Stonybrook
  • Geoffrey S. Tyndall NCAR
  • Denise D. Montzka NCAR
  • Andrew J. Weinheimer NCAR
  • Alam Hasson Fresno State

Download

Download this Experiment (917.33 KB)

Contacts

Principal investigators:

Paul O. Wennberg
Phone: 626 395 2447
E-mail: wennberg@caltech.edu
OrcID: 0000-0002-6126-3854

John H. Seinfeld
Phone: 626-395-4635
E-mail: seinfeld@caltech.edu
OrcID: 0000-0003-1344-4068

John D. Crounse
Phone: 626-395-8655
E-mail: crounjd@caltech.edu
OrcID: 0000-0001-5443-729X

Tran B Nguyen
Phone: 5307525987
E-mail: tbn@ucdavis.edu
OrcID: 0000-0001-9206-4359

Data Manager:

Tran B. Nguyen
Phone: 5307525987
E-mail: tbn@ucdavis.edu

Reactants

Reactant Compound type Concentration Concentration units
4-hydroxy-3-nitrooxy ISOPN
  • Alcohol
  • Alkene
  • Nitrate
 13 Parts Per Billion
hydrogen peroxide (784) 2 Parts Per Million

20140105_expTimeline.csv Timeline

UTC_hr Action
16:50 fill and cap bag
17:02 start sampling bag
17:35 all instruments stopped sampling (except GTHOS)
17:45 H2O2 injection begun (140 uL 35 C bath)
17:47 more air added to bag
18:55 H2O2 addition done
19:00 Instruments begin sampling
19:35 turned on half UV lights (1;2;3)
22:14 UV lights off to check bag volume
22:18 UV lights on
24:35 UV lights off
25:05 done sampling; air added to bag

Citations
Cite this experiment: Publication associated with this experiment:

Characterizations
Light Flux Characterizations:
2013-12-16 (#17)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)

Chamber Details

Name: Seinfeld chambers
Volume in cubic meters: 22
Shape: Rectangular Prism
Surface area in cubic meters: 48
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date:
Replacement frequency: As needed
Cleaning method: Flushing with air Flushing with air with UV lights on Oxidation
o3 background: < 0.5 ppb
nox background: 40 ppt
Particle background in micrograms per cubic meter: < 0.01 ug/m3
Air filtration method: Custom filtration canisters to remove NOx, hydrocarbons, water, particles, ozone, SOx from pressurized ambient air.
Mixing method: 1
Mixing method material: Pulsed air jets, manually actuated
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 10
Temparature range (max degrees celcius): 45
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 4
Relative humidity range (max percent): 90
Particle experiment capability: 1
Lights: Yes
Light source type(s): UV black lamps (350 nm centered)
Supplemental information: https://www.worldscientific.com/doi/abs/10.1142/9789813147355_0001
Additional Notes: