Experiment: Ng Research Group_20170103_BETA-PINENE_Hydroxyl radical_Ammonium sulfate_dry
Experiment
Name: Ng Research Group_20170103_BETA-PINENE_Hydroxyl radical_Ammonium sulfate_dry
Date: 2017-01-03
Organization
Ng Research Group
Chamber
Georgia Tech Environmental Chamber (Far)
Experiment Set
Monoterpene ON_Takeuchi
Goals
To characterize particulate organic nitrate generated from photooxidation of b-pinene in moderate NO level and to understand its hydrolysis process.
Summary
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
Categories:
- Condensed-phase chemical reaction
- Aerosol formation
Relative Humidity: 1-3
Seeded Experiment: Yes
Type of Seed: Ammonium sulfate
Initial Seed Concentration Value:
Seed Concentration Units:
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 1-3
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 2 (parts_per_million)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)
Pressure:
Data Sets
Data Set plots
Experiment Set Details
Name: Monoterpene ON_Takeuchi
Time format and units: Time is either ET or in min
Description:
To characterize particulate organic nitrate generated from photooxidation and NO3 oxidation of a-pinene and b-pinene and to understand its hydrolysis process.
Collaborators:
- Masayuki Takeuchi
Contacts
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
| Reactant | Compound type | Concentration | Concentration units |
|---|---|---|---|
| BETA-PINENE (14896) | 24 | Parts Per Billion |
20170103_TimeLine.csv
Timeline
| Time (ET) | Action |
| 14:30 | RHT/NOx/O3/CAPS on |
| 14:30 | FIGAERO-CIMS on |
| 14:32 | SMPS on |
| 14:34 | AMS on filter |
| 14:49 | AMS on chamber |
| 15:00 | Seed injection starts |
| 15:10 | VOC injection starts |
| 15:15 | Seed injection ends |
| 15:20 | VOC injection ends |
| 15:20 | H2O2 injection starts |
| 15:34 | NO injection starts |
| 15:35 | NO injection ends |
| 15:50 | H2O2 injection ends |
| 16:00 | Lights on |
| 16:00 | NO injection starts |
| 16:10 | NO injection ends |
| 16:50 | NO injection starts |
| 17:00 | NO injection ends |
| 18:10 | NO injection starts |
| 18:20 | NO injection ends |
| 20:00 | Lights off |
| 20:00 | RHT/NOx/O3/CAPS off |
| 20:00 | AMS off |
| 20:00 | SMPS off |
| 20:30 | FIGAERO-CIMS off |
Citations
Characterizations
(None)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)
Chamber Details
Name: Georgia Tech Environmental Chamber (Far)
Volume in cubic meters: 12.6
Shape:
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: