Experiment: Ng Research Group_20120524_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_dry


Name: Ng Research Group_20120524_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_dry
Date: 2012-05-24

Ng Research Group

PNNL Chamber

Experiment Set

Measure the volatility of isoprene + OH SOA under different NOx level

See Xu et al. 2014 EST for findings.

Experiment Details


  • Gas phase chemical reaction
  • Volatility and partitioning
  • Aerosol formation
Temperature: 295
Relative Humidity: 5
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 5
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 0.82e6 (molecules_per_cubic_centimeter)
RO2 Main Fate: HO2
RO2 Lifetime: (Seconds)

Data Set plots
Choose a file: Choose the X-Axis:

Experiment Set Details

Name: isoprene_OH_Xu
Time format and units:
isoprene + OH SOA volatility



Principal investigator:

Nga (Sally) Lee Ng
E-mail: ng@chbe.gatech.edu
OrcID: 0000-0001-8460-4765

Data Manager:

Taekyu Joo
Phone: (404) 385-2149
E-mail: tjoo6@gatech.edu


Reactant Compound type Concentration Concentration units
ISOPRENE (6557) 78.4 Parts Per Billion
hydrogen peroxide (784) 1 Parts Per Million

Expt2_20120524_TimeLine.csv Timeline

Time (Local time) Action
5/24/2012 10:59 inject 3.3uL isoprene
5/24/2012 11:56 inject 2uL isoprene
5/24/2012 12:05 inject 50uL H2O2
5/24/2012 12:45 light on
5/25/2012 9:35 light off

Light Flux Characterizations:
Particle Loss Characterizations:
Vapor Loss Characterizations:

Chamber Details

Name: PNNL Chamber
Volume in cubic meters: 10.6
Shape: Rectangular Prism
Surface area in cubic meters: 28
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date:
Replacement frequency: Annually
Cleaning method: Flushing with air Flushing with air with UV lights on Oxidation Temperature
o3 background: < 1
nox background: < 1
Particle background in micrograms per cubic meter: < 1
Air filtration method: AADCO pure air generator
Mixing method: 0
Mixing method material: Convective turbulence
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 15
Temparature range (max degrees celcius): 45
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 0
Relative humidity range (max percent): 85
Particle experiment capability: 1
Lights: Yes
Light source type(s): Black Light
Supplemental information:
Additional Notes: