Experiment: Ng Research Group_20210226_Furfural_Hydroxyl radical_Ammonium sulfate
Experiment
Name: Ng Research Group_20210226_Furfural_Hydroxyl radical_Ammonium sulfate
Date: 2021-02-26
Organization
Ng Research Group
Chamber
Georgia Tech Environmental Chamber (Near)
Experiment Set
Furans+OH_BrC_Joo
Goals
To investigate SOA and secondary brown carbon formation
Summary
Furfural was oxidized via OH in the presence of AS seed and NOx. HONO was used for the OH source.Experiment Details
Categories:
- Gas phase chemical reaction
- Multiphase chemical reaction
- Aerosol formation
Relative Humidity: 50
Seeded Experiment: Yes
Type of Seed: Ammonium sulfate
Initial Seed Concentration Value: 23212.22
Seed Concentration Units: particles_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 50
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: NA (parts_per_billion)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)
Pressure:
Data Sets
Data Set plots
Experiment Set Details
Name: Furans+OH_BrC_Joo
Time format and units: Elapsed time or EST/EDT
Description:
Furans (furfural, 2-methylfuran, 3-methylfuran) photooxidation experiments to investigate SOA and BrC formation. For the LC-MS & Light absorption data, please reach out to the author.
Collaborators:
- Jo Machesky Yale University
- Tori Hass-Mitchell Yale University
- Linghan Zeng Georgia Institute of Technology
- Rodney Weber Georgia Institute of Technology
- Drew Gentner Yale University
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 |
|---|---|---|---|
| Furfural (7362) |
|
246 | Parts Per Billion |
20210226_Furfural_humid_TimeLine.csv
Timeline
| Time (America/Los_Angeles) | Action |
| 11:30 | GC on |
| 11:30 | RHT/NOx/O3 on |
| 12:54 | AMS on filter |
| 13:15 | AMS on chamber |
| 11:30 | SMPS on |
| 12:05 | CIMS on |
| 13:51 | Oxidant injection starts |
| 13:58 | Oxidant injection ends (HONO, NO: 193 ppb, NO2: 350 ppb) |
| 13:32 | VOC injection starts (VOC compound is 3-methylfuran) |
| 13:51 | VOC injection ends (VOC concentration is 246 ppb) |
| 13:25 | Seed injection starts |
| 13:45 | Seed injection ends (seed concentration is... ) |
| 13:58 | Time background starts |
| 15:05 | Lights on |
| 18:45 | Lights off |
| 18:45 | GC off |
| 18:45 | RHT/Nox/O3 off |
| 18:45 | AMS off |
| 18:45 | DMA off |
| 18:45 | CIMS off |
Characterizations
2020-07-28 (#35)
Particle Loss Characterizations:
2021-02-18 (#40)
Vapor Loss Characterizations:
(None)
Chamber Details
Name: Georgia Tech Environmental Chamber (Near)
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: