Experiment: Ng Research Group_20210226_Furfural_Hydroxyl radical_Ammonium sulfate


Name: Ng Research Group_20210226_Furfural_Hydroxyl radical_Ammonium sulfate
Date: 2021-02-26

Ng Research Group

Georgia Tech Environmental Chamber (Near)

Experiment Set

To investigate SOA and secondary brown carbon formation

Furfural was oxidized via OH in the presence of AS seed and NOx. HONO was used for the OH source.

Experiment Details


  • Gas phase chemical reaction
  • Multiphase chemical reaction
  • Aerosol formation
Temperature: 25
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)

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

Experiment Set Details

Name: Furans+OH_BrC_Joo
Time format and units: Elapsed time or EST/EDT
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.


  • 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


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
Furfural (7362)
  • O-heterocycle
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

Light Flux Characterizations:
2020-07-28 (#35)
Particle Loss Characterizations:
2021-02-18 (#40)
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: