Experiment: UCR-CECERT-APL-Cocker Group_20141124_toluene/H2O2/NO_Hydroxyl radical_No Seed_EPA2000B - Sara


Name: UCR-CECERT-APL-Cocker Group_20141124_toluene/H2O2/NO_Hydroxyl radical_No Seed_EPA2000B - Sara
Date: 2014-11-24


EPA chamber

Experiment Set
Sara Li_Old test

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

Target: 80ppb mXylene+H2O2+NO+5 ppb/hr 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
9999 Parts Per Billion

20141124_EPA2000_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
8:59 NO span starts; flow 2|20|off|35
9:17 NO 91.31; NOx 93.26; CO 14.26; GPT span starts; flow 2|20|0.7|35
9:53 NO 62.01; NOx 91.31; CO 14.16; O3 span starts; flow 2|20|0.7|off
9:56 O3 35.89; Starting E--W--Z sampling
10:07 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
10:18 Inject 100 uL PFH to both bags
10:40 Inject 380 uL H2O2 to both bags
11:01 Air handler on; heater on
11:02 Mix E-W 10 mins
11:19 Close valve 14
11:23 30 uL toluene to E bag
11:32 Inject 253cc (4.836-0.022) NO to E
11:49 Inject 34 uL xylene to W
11:55 Inject 207cc (5.933-0.022) NO to W
12:08 Mix E-W for 1 min
12:48 BLs on; heater off
13:48 Inject 5 ppb NO to W
13:58 Inject 5 ppb NO2 to E
17:58 5 ppb NO2 to E
18:31 5 ppb NO to W
20:58 BLs off; air handler 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: