Experiment: UCR-CECERT-APL-Cocker Group_20141130_toluene/H2O2/NO_Hydroxyl radical_No Seed_EPA2003B - Sara


Name: UCR-CECERT-APL-Cocker Group_20141130_toluene/H2O2/NO_Hydroxyl radical_No Seed_EPA2003B - Sara
Date: 2014-11-30


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of toluene with batched NO injection under black lights.

Target: 80ppb toluene+1ppm H2O2+20 ppb NO INSTRUMENTS: SMPS, GC1, AMS, APM, SYFT

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: Not Sure
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
toluene (1140) 80 Parts Per Billion
H2O2 1 Parts Per Million
  • NOx
20 Parts Per Billion

20141130_EPA2003_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
09:52 NO span starts; flow 2|20|35|off
10:07 NO 88.87; NOx 90.82; CO 14.65; GPT span starts; flow 2|20|35|0.7
10:22 NO 62.99; NOx 89.36; CO 14.65; O3 span starts; flow 2|20|off|0.7
10:43 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
10:47 O3 35.64-0.24; Starting E--W--Z sampling
11:12 Inject 380 uL H2O2 to both bags
11:32 Inject 100 uL PFH to both bags
11:35 Inject 20 ppb NO to both bags
11:46 Mix E-W for 10 min
12:00 Close valve 14
12:02 Inject 34 uL m-xylene to W
12:07 Inject 30 uL toluene to E
12:17 Mix W 1 min
12:22 Mix E 1 min
12:50 BLs on; heater off
20:09 BLs off; air handler off (W 320; E 120)

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: