Experiment: UCR-CECERT-APL-Cocker Group_20141202_M-XYLENE/H2O2/NO_Hydroxyl radical_No Seed_EPA2005B - Sara


Name: UCR-CECERT-APL-Cocker Group_20141202_M-XYLENE/H2O2/NO_Hydroxyl radical_No Seed_EPA2005B - Sara
Date: 2014-12-02


EPA chamber

Experiment Set
Sara Li_Old test

Photo-oxidation of m-xylene with continuous NO injection under black lights.

Target: 80ppb mXylene+1ppm H2O2+20 ppb NO+continous NO 5ppb/hr (A) INSTRUMENTS: SMPS, GC1, AMS, APM, SYFT

Experiment Details


  • Photolysis, any phase
  • Aerosol formation
  • Aerosol aging
  • Blank/Control
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: 0.015'' 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
M-XYLENE (7929) 80 Parts Per Billion
H2O2 1 Parts Per Million
  • NOx
20 Parts Per Billion

20141202_EPA2005_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
08:54 NO span starts; flow 2|20|35|off
09:11 NO 87.40; NOx 89.36; CO 14.45; GPT span starts; flow 2|20|35|0.7
09:24 NO 61.04; NOx 87.4; CO 14.45; O3 span starts; flow 2|20|off|0.7
09:30 Inject 100 uL PFH to both bags
09:42 O3 35.64; Starting E--W--Z sampling
09:42 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
09:56 Inject 65 uL m-xylene to both bags
09:57 Inject 20 ppbNO to both bags
10:40 Inject 380 uL H2O2 to both bags
11:00 Mix E-W for 10 min
11:15 Close valve 14
11:39 BLs on; heater off; elevator on
11:51 Syft switch from W to E
12:39 5 ppb/min NO to W
13:10 Restart elevator program
18:35 Stop NO injection
18:41 BL 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: