Experiment: UCR-CECERT-APL-Cocker Group_20141126_Reference Fuel/NO_Hydroxyl radical_No Seed_EPA2002B - Candice


Name: UCR-CECERT-APL-Cocker Group_20141126_Reference Fuel/NO_Hydroxyl radical_No Seed_EPA2002B - Candice
Date: 2014-11-26


EPA chamber

Experiment Set
Sara Li_Old test

Reference fuel with NO and surrogate experiments with black light.

Target: Reference fuel 200 uL + NO 50 ppb (both) +surrogate 2ppmC (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: NO
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
Reference Fuel 9999 Parts Per Billion
  • NOx
50 Parts Per Billion

20141126_EPA2002_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
08:40 NO span starts; flow 2|20|30|off
08:59 NO 91.31; NOx 91.80; CO 14.64 GPT span starts; flow 2|20|30|0.7
09:00 NO 62.50; NOx 89.84; CO 14.65; O3 span starts; flow 2|20|off|0.7
09:32 O3 35.89; Starting E--W--Z sampling
09:33 Start E-W-Z sampling
09:40 Fill air off; air handlers and heater on
09:42 Inject 100 uL perfluorohexane into both bags; Inject 27.7-3.3 torr NO into both bags
09:49 Inject 200 uL reference fuel into both bags
09:56 Mix bags E-W for 10 mins
10:11 Close valve 14
10:14 Inject 59 uL liquid Mary's surrogate into W bag
10:19 Inject gas surrogate into W bag @ 500 cc/min for 4.3 min
10:33 Inject 13.5 uL acetaldehyde into W bag
10:38 Mix W bag internally for 1 min
11:06 BL on; heater off; P=0.0175"
19:05 BL off; air handlers off

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: