Experiment: UCR-CECERT-APL-Cocker Group_20110422_PROPYLENE/nitric oxide/toluene_Hydroxyl radical_No Seed_EPA1418A - Chris


Name: UCR-CECERT-APL-Cocker Group_20110422_PROPYLENE/nitric oxide/toluene_Hydroxyl radical_No Seed_EPA1418A - Chris
Date: 2011-04-22


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of propene with OH and toluene under black lights

Targets: propene 0.300 ppm both NO 15 ppb both Toluene 0.300 ppm West INSTRUMENTS: GC1,2,SMPS,CEAS

Additional Notes
East bag leaky

Experiment Details


  • Photolysis, any phase
  • Aerosol formation
  • Aerosol aging
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: HO2
RO2 Lifetime: (Seconds)
Pressure: 0.015'' H2O

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

Experiment Set Details

Name: Sara Li_Old test
Time format and units:
To investigate the SOA yield from DEGEE in low NOx condition.



Principal investigator:

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

Data Manager:

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


Reactant Compound type Concentration Concentration units
PROPYLENE (8252) 300 Parts Per Billion
nitric oxide (145068)
  • NOx
15 Parts Per Billion
toluene (1140) 300 Parts Per Billion

20110422_EPA1418_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
08:00 NO/CO span flow 2|40|off|40
08:11 NO 96.43; NOx 96.39; CO 9.58
08:12 GPT span flow 2|40|2|40
08:43 NO 21.4; NOx 91.55
08:43 O3 span flow 2|40|2|off
08:53 O3 #2 83.01
08:54 Start E-W-Z sampling
10:46 NO 20.61; NOx 88.67; start GPT span flow 2|40|2|40
10:51 Turn off fill air; aire handler and heater on
10:54 Inject 100 uL PFH into both bags
11:15 Inject 186 torr from .2077 L bulb propene into both
11:16 Start E-W-Z sampling
11:30 Inject 5.9 torr NO from .326 L bulb into both
11:35 Mix E-W for 7 min
11:50 Close valve 14
11:53 Inject 110 uL toluene into W bag
12:00 Mix bags internally for 1 min
12:40 BL on
15:28 NO 19.73; NOx 91.31; start GPT span flow 2|40|2|40
16:10 Start E-W-Z sampling
18:51 Sample W bag
19:41 BL off

Light Flux Characterizations:
Particle Loss Characterizations:
Vapor Loss Characterizations:

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: