Experiment: UCR-CECERT-APL-Cocker Group_20110414_b-caryophyllene/ISOPRENE_Ozone_No Seed_EPA1410A - Esther


Name: UCR-CECERT-APL-Cocker Group_20110414_b-caryophyllene/ISOPRENE_Ozone_No Seed_EPA1410A - Esther
Date: 2011-04-14


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of isoprene with the existence of O3 and b-caryophyllene under black lights

Targets: b-cary 5ppb O3 400ppb isoprene 0.25ppm INSTRUMENTS: GC, SMPS, vTDMA, APM, AMS

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: Ozone
Initial Oxidant Concentration Value: 400 (parts_per_billion)
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
b-caryophyllene 5 Parts Per Billion
ISOPRENE 0.25 Parts Per Million

20110414_EPA 1410 B-caryophyllene + Isoprene + O3_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
08:40 Esther; B-caryophyllene 5 ppb; isoprene 0.25 ppm; O3 500 ppb both bags; VTDMA 50 C
08:41 NO/CO span starts; flow 2|40|off|40.0
08:52 Inject 7.8uL B-caryophyllene into both bags
09:04 Teco2 NO 99.95; NOx 99.95; CO 9.71; GPT span starts; flow 2|40|2.00|40
09:28 Teco2 NO 21.19; NOx 92.14; CO 9.72; O3 span starts; flow 2|40|2.0|off
09:31 Inject 100uL PF into both bags
09:37 Inject 172.5 uL isoprene to both bags
09:47 O3 #2 86.91; Starting E--W--Z sampling
11:07 Fill air off
11:56 Mix W-E bag for 6:40 mins
12:17 Close valve 14
12:19 Inject O3 to East bag at 20 PSI for 40 mins
12:59 Inject O3 to West bag at 20 PSI for 40 mins
16:37 Turn on blacklights
20:15 End of experiment (W:999s; E:999s)

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: