Experiment: UCR-CECERT-APL-Cocker Group_20150201_1-METHYLNAPHTHALENE/H2O2_Hydroxyl radical_No Seed_EPA2017B - Candice


Name: UCR-CECERT-APL-Cocker Group_20150201_1-METHYLNAPHTHALENE/H2O2_Hydroxyl radical_No Seed_EPA2017B - Candice
Date: 2015-02-01


EPA chamber

Experiment Set
Sara Li_Old test

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

Target: 1-methylnaphthalene 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
1-METHYLNAPHTHALENE (7002) 30 Parts Per Billion
H2O2 1 Parts Per Million

20150201_EPA2017_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
09:13 NO span starts; flow 2|20|35|off
09:30 NO 88.38; NOx 89.36; CO 15.28; GPT span starts; flow 2|20|35|0.7
09:42 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
09:44 Inject 100 uL PFH into both bags
09:45 NO 62.99; NOx 88.38; CO 15.28; O3 span starts; flow 2|20|off|0.7
09:59 Inject 30 uL 1-methylnaphthalene into both bags @45 V; 49 *C; 69 *C
10:23 Inject 400 uL H2O2 into both bags; 40 V; 69 *C; 10 lpm
10:24 O3 36.89; Starting E--W--Z sampling
10:42 Mix bags E-W for 10 mins
10:55 Close valve 14
10:59 Inject 36 uL m-xylene into W bag
11:10 Mix W bag for 1 min
11:32 BL on; heaters off
20:08 BLs off; air handlers off; W 60 E 124

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: