Experiment: UCR-CECERT-APL-Cocker Group_20141203_Surrogate/NOx/H2O2_Hydroxyl radical_No Seed_EPA2006B - Candice&Sara


Name: UCR-CECERT-APL-Cocker Group_20141203_Surrogate/NOx/H2O2_Hydroxyl radical_No Seed_EPA2006B - Candice&Sara
Date: 2014-12-03


EPA chamber

Experiment Set
Sara Li_Old test

Benzyl alcohol with NOx, OH and surrogate experiments with black light.

Target: 1ppmC surrogate, 25ppb NOx, 1ppm H2O2, 80ppb benzyl alcohol (A only) 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
Surrogate 1 Parts Per Million
  • NOx
25 Parts Per Billion
H2O2 1 Parts Per Million

20141203_EPA2006_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
11:22 NO span starts; flow 2|20|35|off
11:42 NO 89.84; NOx 91.31; CO 14.65; GPT span starts; flow 2|20|35|0.7
11:59 NO 63.48; NOx 89.36; CO 14.65; O3 span starts; flow 2|20|off|0.7
12:18 O3 35.89; Starting E--W--Z sampling
12:38 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
13:41 Inject 100 uL perfluorohexane into both bags; inject 253cc (8.201-0.036) torr NO into both bags; inject 207cc (4.947-0.036) torr NO2 into both bags
13:44 Inject 66 uL liquid surrogate into both bags
13:45 Inject gas surrogate into both bags @ 500 cc/min for 5 mins
13:58 Inject 400 uL H2O2 into both bags @ 10 lpm 66*C
14:16 Mix E-W 10 min
14:32 Close valve 14
14:35 Inject 30 uL benzyl alcohol into W bag @ 10 lpm; 69 *C
15:02 Mix W bag 1 min
15:18 BL on; heaters off; P=0.0175"
21:38 BLs off; air handlers off (W 319; E 196)

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: