Experiment: UCR-CECERT-APL-Cocker Group_20161012_nitric oxide_Hydroxyl radical and Ozone_No Seed_EPA2263A - Weihan


Name: UCR-CECERT-APL-Cocker Group_20161012_nitric oxide_Hydroxyl radical and Ozone_No Seed_EPA2263A - Weihan
Date: 2016-10-12


EPA chamber

Experiment Set
Cleaning/Scrubing/Baking Experiments

Chamber cleaning with H2O2 and O3

Chamber cleaning with H2O2 and O3

Experiment Details


  • 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 and Ozone
Initial Oxidant Concentration Value: Abundant (parts_per_million)
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: Cleaning/Scrubing/Baking Experiments
Time format and units: Time format in timeline is the absolute local time.
Normal chamber cleaning experiments. Maybe you can find something interesting from our SMPS data, if interested...


  • APL student members


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
nitric oxide (145068)
  • NOx
160 Parts Per Billion

20161012_EPA2263_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
9:55 Fill air was already off before checking
9:55 Fill air off; heater on; air handler on
9:56 Changer chiller T to 81 F; change chamber T to 40 C
10:05 Inject 800 uL H2O2 in both bags
10:33 Inject NO2 (207.7 cc) 97.1 - 0.024 torr into both bags
10:34 Inject O3 into both bags @ 30 psi for 30 mins
11:10 Mix E-W bags for 5 mins
11:15 Close valve 14
11:16 BLs on; heater off
11:18 Elevator on (deltaP = 0.018'')
17:57 End of experiment
18:16 Change chamber T to 27 C; change chiller T to 57 F

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: