Experiment: Ng Research Group_20210304_2-Methylfuran_Hydroxyl radical_Ammonium sulfate


Name: Ng Research Group_20210304_2-Methylfuran_Hydroxyl radical_Ammonium sulfate
Date: 2021-03-04

Ng Research Group

Georgia Tech Environmental Chamber (Near)

Experiment Set

To investigate SOA and secondary brown carbon formation

2-methylfuran 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: 5
Seeded Experiment: Yes
Type of Seed: Ammonium sulfate
Initial Seed Concentration Value: 19547.64
Seed Concentration Units: particles_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 5
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
2-Methylfuran (10797)
  • O-heterocycle
537 Parts Per Billion

20210304_MF2_dry_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
10:00 GC on
10:00 RHT/NOx/O3 on
10:49 AMS on filter
11:10 AMS on chamber
10:00 SMPS on
10:30 CIMS on
12:15 Oxidant injection starts
12:25 Oxidant injection ends (HONO, NO: 237 ppb, NO2: 501 ppb)
11:58 VOC injection starts (VOC compound is 2-methylfuran)
12:15 VOC injection ends (VOC concentration is 537 ppb)
11:51 Seed injection starts
12:11 Seed injection ends (seed concentration is... )
12:25 Time background starts
13:30 Lights on
17:10 Lights off
17:10 GC off
17:10 RHT/Nox/O3 off
17:10 AMS off
17:10 DMA off
17:10 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: