Experiment: UCR-CECERT-APL-Cocker Group_20161015_SOA surrogate/NOx/H2O2_Hydroxyl radical_No Seed_EPA2265B - Weihan

Experiment

Name: UCR-CECERT-APL-Cocker Group_20161015_SOA surrogate/NOx/H2O2_Hydroxyl radical_No Seed_EPA2265B - Weihan
Date: 2016-10-15

Organization
UCR-CECERT-APL-Cocker Group

Chamber
EPA chamber

Experiment Set
VOC-Surrogate Experiments

Goals
Observing OH-initiated m-xylene reactions under SOA surrogate and NOx environment.

Summary
targets: 1.1 ppmC SOA surrogate + 1 ppmc H2O2 + 25 ppb Nox + 250 ppb m-xylene(A) Instruments: GC1 + SMPS+ AMS + VTDMA + SIFT

Additional Notes
East bag didn't drop down.

Experiment Details

Categories:

  • Photolysis, any phase
  • Blank/Control
Temperature: 28
Relative Humidity: 0.01
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0.01
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: N/A (molecules_per_cubic_centimeter)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)
Pressure: 0.015'' H2O

Data Sets

ID Instrument File  
2381 SMPS EPA2265B_SMPS.csv
2382 SMPS - SizeD EPA2265B_SizeD.csv
2383 TC EPA2265B_Temperature.csv
2384 NOx Box EPA2265B_NOx.csv
2385 Ozone Box EPA2265B_O3.csv
2387 GC-FID EPA2265B_GC.csv

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

Experiment Set Details

Name: VOC-Surrogate Experiments
Time format and units: Time format in timeline is the absolute local time.
Description:
Experiments involved with SOA surrogates.

Collaborators:

  • Weihan Peng
  • Weihua Li
  • Mary Kacarab

Download

Download this Experiment (80.62 KB)

Contacts

Principal investigator:

David Cocker
E-mail: dcocker@engr.ucr.edu


Data Manager:

Chen Le
Phone: 9516603455
E-mail: cle030@ucr.edu

Reactants

Reactant Compound type Concentration Concentration units
SOA surrogate 1.1 Parts Per Million
NOx
  • NOx
 25 Parts Per Billion
H2O2 1 Parts Per Million

20161015_EPA 2265 1.1 ppmC SOA surrogate + 1 ppmC H2O2 + 25 NOx + 250 ppb m-xylene_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
9:48 Start NO|CO span flow 2|20|off|35
10:06 NO 68.56 NOx 69.34 CO 15.9
10:07 Start GPT span flow 2.0|70|0.7|35
10:26 NO 48.3 NOx 69.3 CO 16.1
10:27 O3 Span flow 2.0|70.0|0.7|off
10:38 Fill air off - air handlers on - heaters on
10:48 Injected NO 8.462-0.028 Torr (253cc) into both bags
10:48 Injected NO2 3.028-0.034 (370cc) into both bags
10:49 O3xx2 34.67
10:50 Start E--W--Z span
10:53 Injected 100 uL PFB into both bags
10:56 Injected 66 uL liquid surrogate into both bags
10:59 Injected 15 uL acetaldehyde into both bags
11:23 Inject gas surrogate into both bags for 4:30 @ 500cc/min
11:35 Inject 400 uL H2O2 into both bags
11:55 Mix bags W-E for 10 minutes
12:06 Close valve 14
12:13 Inject 100 uL m-xylene into west bag
12:34 Internally mix west bag for 1 minute
12:45 Black Lights on - heaters off
12:47 Elevators on (deltaP = 0.0165'')
19:30 End of experiment

Citations
Cite this experiment:

Characterizations
Light Flux Characterizations:
(None)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)

Chamber Details

Name: EPA chamber
Volume in cubic meters: 84.2
Shape: Rectangular Prism
Surface area in cubic meters: 126
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date: 2017-11-07
Replacement frequency: As needed
Cleaning method: Flushing with air Flushing with air with UV lights on Oxidation Wipe with ultra-pure water if needed
o3 background: 10
nox background: 0
Particle background in micrograms per cubic meter: 0
Air filtration method: The chamber is using zero air from our air purification system
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 5
Temparature range (max degrees celcius): 45
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 0.01
Relative humidity range (max percent): 80
Particle experiment capability: 1
Lights: Yes
Light source type(s): 350nm UVA Black Lamps
Supplemental information:
Additional Notes: