Experiment: UCR-CECERT-APL-Cocker Group_20150129_naphthalene/H2O2_Hydroxyl radical_No Seed_EPA2015B - Candice


Name: UCR-CECERT-APL-Cocker Group_20150129_naphthalene/H2O2_Hydroxyl radical_No Seed_EPA2015B - Candice
Date: 2015-01-29


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of two VOCs with OH under black lights.

Target: Naphthalene 30 ppb+H2O2 1 ppm (both) +m-xylene 90 ppb(A) INSTRUMENTS: SMPS, GC1, AMS, APM, SYFT

Experiment Details


  • Photolysis, any phase
  • Aerosol formation
  • Aerosol aging
  • 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
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
naphthalene (931) 30 Parts Per Billion
H2O2 1 Parts Per Million

20150129_EPA2015_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
08:36 NO span starts; flow 2|20|35|off
08:52 NO 85.94; NOx 87.40; CO 15.23; GPT span starts; flow 2|20|35|0.7
09:16 Inject 100 uL PFH to both bags
09:42 NO 61.04; NOx 85.94; CO 15.23; O3 span starts; flow 2|20|off|0.7
09:50 Inject 3.5 mg naphthalene into both bags @ 55V; 10 lpm
10:26 O3 35.89; Starting E--W--Z sampling
10:40 Inject 400 uL H2O2 into both bags @ 55Vw; 55 *C; 10 lpm
10:54 Mix bags E-W for 10 mins
11:09 Close valve 14
11:15 Inject 36 uL m-xylene into W bag
11:23 Mix W bag for 1 min
11:29 BL on; heater off
13:30 CPC was not on for SMPS
19:56 BL off; air handlers off; W 189 E 212

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: