Experiment: Ng Research Group_20160412_ALPHA-PINENE_Hydroxyl radical_Ammonium sulfate_dry


Name: Ng Research Group_20160412_ALPHA-PINENE_Hydroxyl radical_Ammonium sulfate_dry
Date: 2016-04-12

Ng Research Group

Georgia Tech Environmental Chamber (Near)

Experiment Set

Generate SOA for health study.

AP+HONO, photooxidation under dry condition.

Experiment Details


  • Aerosol formation
Temperature: 24-27
Relative Humidity: 1-10
Seeded Experiment: Yes
Type of Seed: Ammonium sulfate
Initial Seed Concentration Value: 16261
Seed Concentration Units: particles_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 1-10
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: ~1e7 (molecules_per_cubic_centimeter)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)

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

Experiment Set Details

Name: AP+OH_Chen
Time format and units: Eastern time
a-pinene photooxidation under low-NO & high-NO, dry & humid conditions



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
ALPHA-PINENE (319064711)
  • Alkene
174 Parts Per Billion

20160412_AP_HONO_TimeLine.csv Timeline

Time (America/ET) Action
11:25 SMPS on
11:15 AMS on filter
11:35 AMS on chamber
12:37 Seed injection starts
12:57 Seed injection ends
13:24 VOC injection starts
13:34 VOC injection ends
13:47 HONO injection starts
13:53 HONO injection ends
14:11 UV on
15:57 Filter starts
17:37 Filter ends
17:45 AMS/SMPS off

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

Chamber Details

Name: Georgia Tech Environmental Chamber (Near)
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: