Experiment: UCR-CECERT-APL-Cocker Group_20110424_GLYOXAL_Hydroxyl radical_No Seed_EPA1420A - Shun


Name: UCR-CECERT-APL-Cocker Group_20110424_GLYOXAL_Hydroxyl radical_No Seed_EPA1420A - Shun
Date: 2011-04-24


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of aerosolized glyoxal under black lights

Aerosolized glyoxal/H2O (40wt%) solution, turned on lights later INSTRUMENTS: SMPS, AMS, VTDMA, KANOMAX, PILS-ToF, CEAS

Additional Notes
Agilent TOF not tuned

Experiment Details


  • Photolysis, any phase
  • Aerosol formation
  • Aerosol aging
Temperature: 28
Relative Humidity: 35
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 35
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: N/A (molecules_per_cubic_centimeter)
RO2 Main Fate: HO2
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
GLYOXAL (7860) 9999 Parts Per Billion

20110424_EPA1420_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
09:46 NO/CO span flow 2|40|off|40
10:05 NO 95.12; NOx 94.19; CO 9.34
10:06 GPT span flow 2|40|2|40
10:49 NO 20.36; NOx 89.50; CO 9.55
10:49 O3 span flow 2|40|2|off
11:07 O3 #2 79.59
11:52 Close valve 14; turn off fill air; air handler and heater on (West)
12:42 Start filter sampling from W
15:00 BL on
16:49 Note: E bag formed ~0.5 ug/m3. East bag is jsut a clean; humid bag
20:52 BL 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: