Experiment: UCR-CECERT-APL-Cocker Group_20150128_toluene/H2O2/NO_Hydroxyl radical_No Seed_EPA2014A - Sara


Name: UCR-CECERT-APL-Cocker Group_20150128_toluene/H2O2/NO_Hydroxyl radical_No Seed_EPA2014A - Sara
Date: 2015-01-28


EPA chamber

Experiment Set
Sara Li_Old test

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

Target: 80ppb toluene+1ppm H2O2+20 ppb NO+ step wise NO 5ppb/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
9999 Parts Per Billion

20150128_EPA2014_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
9:13 NO span starts; flow 2|20|35|off
9:28 NO 89.36; NOx 89.36; CO 15.23; GPT span starts; flow 2|20|35|0.7
9:43 NO 62.01; NOx 86.91; CO 15.23; O3 span starts; flow 2|20|off|0.7
9:55 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
9:58 O3 35.89; Starting E--W--Z sampling
10:05 Inject 100 uL PFH to both bags
10:15 Inject 60 uL toluene to both bags
10:21 Inject 253cc (9.965-0.015) torr NO to both bags
10:35 Inject 380 uL H2O2 to both bags @ 56 *C
10:55 Mix E-W for 10 min
11:10 Close valve 14
11:55 BLs on; elevator on P=0.017
12:50 Start cotninuous NO injection 5 ppb/min
15:15 Stop NO injection
19:03 BLs off W 405 E 192
19:20 Text NO inject lmu
19:45 NO concentration -> 20 ppb (NO injection good :))
20:15 Sent bag?

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: