Experiment: UCR-CECERT-APL-Cocker Group_20110426_benzene/nitric oxide/Methyl nitrite_Hydroxyl radical_No Seed_EPA1422B - Shun


Name: UCR-CECERT-APL-Cocker Group_20110426_benzene/nitric oxide/Methyl nitrite_Hydroxyl radical_No Seed_EPA1422B - Shun
Date: 2011-04-26


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of benzene with methyl nitrite and high NO under black lights.

Targets: phenol 50ppb (A), NO 500ppb, MN 50ppb benzene 500ppb(B) INSTRUMENTS: SMPS, AMS, VTDMA, KANOMAX, PILS-ToF, GC1,2

Additional Notes
"east bag leaky West SMPS data noisy"

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: 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
benzene (241) 500 Parts Per Billion
nitric oxide (145068) 500 Parts Per Billion
Methyl nitrite (12231) 50 Parts Per Billion

20110426_EPA1422_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
05:33 NO/CO span flow 2|40|off|40
05:48 Change NOx scale to 1000 ppb
06:07 NO 123.54; NOx 123.54; CO 9.82
06:08 GPT span flow 2|40|2|40
06:24 NO 27.83; NOx 114.45; CO 9.84
06:25 Start O3 span flow 2|40|2|off
07:05 O3 #2 83.98
07:34 Inject CH3ONO 16.6 torr (392 cc) into both
07:40 Inject NO 201.5 torr (326 cc) into both
08:01 Mix bags for 4mins
08:08 Close valve 14
08:12 Inject phenol 15.4 mg into W bag
08:14 Inject benzene 150 uL into E bag
08:30 Mix bags internally for 1 min
09:52 Mix W-E for 6 min
09:54 Inject perfluorohexane 100 uL
11:12 BL on; air handler on
12:35 Start filter sampling from W
15:50 Stop filter sampling

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: