Experiment: Ng Research Group_20150301_a-Pinene_Ozone_Ammonium sulfate


Name: Ng Research Group_20150301_a-Pinene_Ozone_Ammonium sulfate
Date: 2015-03-01

Ng Research Group

Georgia Tech Environmental Chamber (Far)

Experiment Set

To characterize vapor wall loss

Vapor wall loss characterization based on the case study of a-pinene ozonolysis with different seed concentration

Experiment Details


  • Aerosol formation
  • Instrument/Chamber characterization
Temperature: 25
Relative Humidity: 5
Seeded Experiment: Yes
Type of Seed: Ammonium sulfate
Initial Seed Concentration Value:
Seed Concentration Units: particles_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 5
Reaction type:
Oxidant Name: Ozone
Initial Oxidant Concentration Value: 500 (parts_per_billion)
RO2 Main Fate: Not Sure
RO2 Lifetime: (Seconds)

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

Experiment Set Details

Name: AP+O3_VWL_Nah
Time format and units: hh:mm
Vapor wall loss experiment by case study of a-pinene ozonolysis



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
a-Pinene (11240513) 50 Parts Per Billion

20150301_ap_O3_TimeLine.csv Timeline

Time (America/New_York) Action
9:36 RHT/NOx/O3 on
9:54 AMS on filter
10:27 AMS on chamber
9:36 SMPS on
12:34 Oxidant injection starts
13:48 Oxidant injection ends (OH concentration is...)
11:14 VOC injection starts (VOC compound is... )
11:24 VOC injection ends (VOC concentration is ...)
Seed injection starts
Seed injection ends (seed concentration is... )
11:25 Time background starts
19:34 RHT/Nox/O3 off
19:34 AMS off
19:34 DMA off

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

Chamber Details

Name: Georgia Tech Environmental Chamber (Far)
Volume in cubic meters: 12.6
Surface area in cubic meters: 32.48865
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness:
Replacement date: 2017-02-07
Replacement frequency: As needed
Cleaning method: Flushing with air Flushing with air with UV lights on
o3 background: 3
nox background: 1
Particle background in micrograms per cubic meter:
Air filtration method: Pure air generator with membrane filter dryer
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 4
Temparature range (max degrees celcius): 40
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 2
Relative humidity range (max percent): 70
Particle experiment capability: 1
Lights: Yes
Light source type(s): UVA Black Lamps, Natural Sunlight
Supplemental information:
Additional Notes: