Experiment: UCR-CECERT-APL-Cocker Group_20110412_Ethene/NO/o-cresol_Hydroxyl radical_No Seed_EPA1408A - Shun


Name: UCR-CECERT-APL-Cocker Group_20110412_Ethene/NO/o-cresol_Hydroxyl radical_No Seed_EPA1408A - Shun
Date: 2011-04-12


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of ethylene with the existence of NO and o-cresol

Targets: ethylene 1ppm, NO 15ppb (both), o-cresol 100 ppb (A) INSTRUMENTS: GC1,2,SMPS,CEAS, APM, VTDMA, PILS, AMS , press limit 0.01"

Experiment Details


  • Photolysis, any phase
  • Aerosol formation
  • Aerosol aging
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: 0.010'' 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
Ethene 1 Parts Per Million
  • NOx
15 Parts Per Billion
o-cresol (335) 100 Parts Per Billion

20110412_EPA 1408 ethylene + NO + o-cresol_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
12:51 Shun; Ethylene 1 ppm; NO 15 ppb both bags; o-cresol 100 ppb bag A
12:52 NO/CO span starts; flow 2|40|off|40.0
13:28 Teco2 NO 99.56; NOx 98.34; CO 9.68; GPT span starts; flow 2|40|2.00|40.0
14:06 Teco2 NO 21.09; NOx 89.79; CO 9.67; NO2/PAN NO2 179.79
14:49 O3 #2 84.96
15:10 Inject 100uL PF into both bags
15:14 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
15:16 Inject Ethylene 331.1 torr (392 cc) into both bags
15:25 Inject NO 9.30 torr (209.7 cc) to both bags
15:36 Mix W-E bag for 5 mins
15:43 Mix W-E bag for 3 mins
15:54 Inject 35uL o-cresol into West bag (nitrogen injection into East)
16:24 Stop o-cresol injection
16:28 Internally mix both bags
16:43 Heaters off; Blacklights on (A bulbs out)
19:54 GPT span (mid run); flows 2.00|40.0|2.00|40.0
20:11 Teco2 NO 21.48; NOx 91.65; CO 9.74; NO2/PAN NO2 164.10
21:55 Start filter sampling
22:45 Stop filter sampling
22:51 Blacklights off
22:52 CEAS tube S.P. 400 C
22:59 CEAS tube S.P. reached 400 C
23:16 CEAS tube S.P. off
23:30 GPT span flows 2.00|40.0|2.00|40.0

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: