Experiment: UCR-CECERT-APL-Cocker Group_20110417_1-Ethyl-2-methylbenzene/NO_Hydroxyl radical_No Seed_EPA1413B - Annie


Name: UCR-CECERT-APL-Cocker Group_20110417_1-Ethyl-2-methylbenzene/NO_Hydroxyl radical_No Seed_EPA1413B - Annie
Date: 2011-04-17


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of o-ethyltoluene with NO under black lights

Targets: o-ethyltoluene 100 ppb(both) NO 20ppb (west) 40ppb (east) INSTRUMENTS: GC, SMPS, AMS, VTDMA, APM

Additional Notes
east bag leaky

Experiment Details


  • Photolysis, any phase
  • Aerosol formation
  • Aerosol aging
  • 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: 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
1-Ethyl-2-methylbenzene 100 Parts Per Billion
  • NOx
40 Parts Per Billion

20110417_EPA 1413 o-ethyltoluene + NO AN BL_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
09:38 Annie; Target; OET o.1 ppm both; NO 20 ppb west 40 ppb east
09:39 NO/CO span starts; flow 2|40|off|40
09:43 Inject 100uL PF into both bags
10:12 Teco2 NO 98.58; NOx 97.12; CO 9.70; GPT span starts; flow 2|40|2|40
10:29 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
10:30 Teco2 NO 22.02; NOx 92.15; CO 9.70 O3 span starts; flow 2|40|2|off
10:51 Mix W-E bag for 7:30 mins
10:52 O3 #2 82.52; Starting E--W--Z sampling
11:08 Close valve 14
11:16 Inject NO 6.32 torr (207.7 cc) to West bag
11:39 Inject NO 8.02 torr (326 cc) to East bag
12:19 Heaters off; Blacklights on
16:21 Start filter sampling
20:04 Stop filter sampling
20:58 Black lights 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: