Experiment: Ng Research Group_20161228_BETA-PINENE_Hydroxyl radical_1:2 MgSO4/H2SO4_60%RH


Name: Ng Research Group_20161228_BETA-PINENE_Hydroxyl radical_1:2 MgSO4/H2SO4_60%RH
Date: 2016-12-28

Ng Research Group

Georgia Tech Environmental Chamber (Far)

Experiment Set
Monoterpene ON_Takeuchi

To characterize particulate organic nitrate generated from photooxidation of b-pinene in moderate NO level and to understand its hydrolysis process

SOA including particulate organic nitrate formed upon UV light on by injecting 24 ppb b-pinene and 2 ppm H2O2, and keeping NO level at around 50 ppb by continuous injection.

Additional Notes
Used to compare with the same experiment but in dry condition.

Experiment Details


  • Condensed-phase chemical reaction
  • Aerosol formation
Temperature: 25 - 28
Relative Humidity: 53 - 70
Seeded Experiment: Yes
Type of Seed: 1:2 MgSO4/H2SO4
Initial Seed Concentration Value: 30327600000
Seed Concentration Units: particles_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 53 - 70
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 2 (parts_per_million)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)

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

Experiment Set Details

Name: Monoterpene ON_Takeuchi
Time format and units: Time is either ET or in min
To characterize particulate organic nitrate generated from photooxidation and NO3 oxidation of a-pinene and b-pinene and to understand its hydrolysis process.


  • Masayuki Takeuchi


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
  • Alkene
24 Parts Per Billion

20161228_TimeLine.csv Timeline

Time (ET) Action
13:59 AMS on filter
14:20 AMS on chamber
14:34 SMPS on
15:00 RHT/NOx/O3 on
15:25 Seed injection starts
15:40 Seed injection ends
16:04 NO injection starts
16:05 NO injection ends
15:50 H2O2 injection starts
16:20 H2O2 injection ends
15:41 VOC injection starts
15:50 VOC injection ends
16:30 Lights on
16:30 NO injection starts
16:40 NO injection ends
17:20 NO injection starts
17:30 NO injection ends
20:30 Lights off
20:30 RHT/Nox/O3 off
20:30 AMS off
20:30 SMPS 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: