Experiment: UCR-CECERT-APL-Cocker Group_20150119_toluene/H2O2/NO/NO2_Hydroxyl radical_No Seed_EPA2012A - Sara


Name: UCR-CECERT-APL-Cocker Group_20150119_toluene/H2O2/NO/NO2_Hydroxyl radical_No Seed_EPA2012A - Sara
Date: 2015-01-19


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of toluene with initial OH and NO with step wise NO2 injection under black lights.

Target: 80ppb toluene+1ppm H2O2+20 ppb NO+step wise NO2 10ppb/hr (A) 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 80 Parts Per Billion
H2O2 1 Parts Per Million
  • NOx
20 Parts Per Billion
  • NOx
9999 Parts Per Billion

20150119_EPA2012_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
8:47 NO span starts; flow 2|20|35|off
9:03 NO 91.31; NOx 94.73; CO 15.-4; GPT span starts; flow 2|20|35|0.7
9:18 NO 64.45; NOx 92.77; CO 15.04; O3 span starts; flow 2|20|off|0.7
9:30 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
9:34 Inject 100 uL PFH to both bags
9:37 O3 35.64; Starting E--W--Z sampling
9:46 Inject 60 uL toluene to both bags
9:47 Inject 253cc (9.919-0.019) torr NO to both bags
10:00 Inject 380 uL H2O2 to both bags
10:40 Mix E-W for 10 mins
10:55 Close valve 14
11:15 BLs on; heaters off; air handler off
12:20 Inject 207cc (1.54-0.022) NO2 to W
12:26 Restart elevator program; P=0.01
13:20 Inject 253cc (0.096-0.022) torr NO W
14:20 Inject 207cc (1.019-0.024) CO to W
15:20 Inject 253cc (0.705-0.022) torr W
17:40 BLs off; air handler off (W down; E 86)

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: