Experiment: UCR-CECERT-APL-Cocker Group_20141122_MEMP/NO_Hydroxyl radical_No Seed_EPA1999B - Sara


Name: UCR-CECERT-APL-Cocker Group_20141122_MEMP/NO_Hydroxyl radical_No Seed_EPA1999B - Sara
Date: 2014-11-22


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of MEMP with NO under black lights.

Target: 1ppm H2O2+40 ppb DEGBE(A)/20ppb NO +40ppb MEMP(B) INSTRUMENTS: SMPS, GC1, AMS, APM, SYFT

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: 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
MEMP 40 Parts Per Billion
  • NOx
20 Parts Per Billion

20141122_EPA1999_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
9:28 Start NO/CO span 2.00|20.0|off|35.0
9:49 NO 93.26; NOx 93.75; CO 14.36
9:50 GPT span 2.00|20.0|0.7|35.0
10:13 NO 66.41; NOx 93.26; CO 14.55; start O3 span 2.00|20.0|0.7|off
10:25 Fill air off; air handler and heater on
10:28 Inject 100 uL PFH to both bags
10:29 O3 #2 35.64
10:30 Start E-W-Z
10:41 Mix E-W for 10 min
10:55 Close valve 14
11:44 Inject 25 uL MEMP to E bag (80 -> 60 *C)
12:06 Inject DEGEE 22.5 uL to W bag (60 -> 80 *C)
12:08 Inject NO 4.908 - 0.024 torr (253 cc) to E
12:20 Mix E for 1 min
12:45 Inject H2O2 190 uL to W
13:05 Mix W for 1 min
13:15 BLs on; heater off
20:52 BLs off; air handler 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: