Experiment: Kroll Lab_20220716_Nitrous Acid/Nitric Oxide/Dimethyl Sulfoxide/Acetonitrile_Hydroxyl radical_Sodium nitrate


Name: Kroll Lab_20220716_Nitrous Acid/Nitric Oxide/Dimethyl Sulfoxide/Acetonitrile_Hydroxyl radical_Sodium nitrate
Date: 2022-07-16

Kroll Lab

Kroll main chamber

Experiment Set
DMSO and DMDS oxidation experiments

Measure product distribution from the oxidation of DMSO under higher NOx conditions

DMSO oxidized using HONO as the oxidant precursor. This is "Experiment 2" in Goss and Kroll, ACP, 2023 (Submitted).

Additional Notes
Note that NOx and ozone data are not dilution corrected.

Experiment Details


  • Gas phase chemical reaction
  • Aerosol formation
Temperature: 20
Relative Humidity: 0
Seeded Experiment: Yes
Type of Seed: Sodium nitrate
Initial Seed Concentration Value: 56
Seed Concentration Units: micrograms_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: Not explicitly calculated (molecules_per_cubic_centimeter)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)

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

Experiment Set Details

Name: DMSO and DMDS oxidation experiments
Time format and units: Seconds after experiment start
These experiments examine the oxidation of dimethyl sulfoxide (DMSO) and dimethyl disulfide (DMDS) under varied NOx conditions.



Principal investigator:

Jesse H Kroll
E-mail: jhkroll@mit.edu
OrcID: 0000-0002-6275-521X

Data Manager:

Matthew B Goss
E-mail: mgoss@mit.edu


Reactant Compound type Concentration Concentration units
Nitrous Acid (24529) 23 Parts Per Billion
Nitric Oxide (145068) 25 Parts Per Billion
Dimethyl Sulfoxide (679) 59 Parts Per Billion
Acetonitrile (6342) 4.5 Parts Per Billion

20220716 experiment timeline.csv Timeline

Time (seconds) Event Description
-4860 Seed added
-4140 acetonitrile added
-2640 DMSO added
-1200 HONO added
0 Lights turned on
12000 Lights turned off

Light Flux Characterizations:
Particle Loss Characterizations:
Vapor Loss Characterizations:

Chamber Details

Name: Kroll main chamber
Volume in cubic meters: 7.5
Shape: Rectangular Prism
Surface area in cubic meters: 23
Flow Mode: Flow-through
Flow through rate in liters per minute: 14
Body Material: Teflon
Body thickness:
Replacement date:
Replacement frequency:
Cleaning method: Flushing with air Flushing with air with UV lights on Oxidation
o3 background: < 1 ppb
nox background: < 1 ppb (est. 10 ppt NO)
Particle background in micrograms per cubic meter:
Air filtration method: AADCO Model 737
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 12
Temparature range (max degrees celcius): 40
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent):
Relative humidity range (max percent):
Particle experiment capability: 1
Lights: Yes
Light source type(s): Broad UV fluorescent with peak at 340 nm
Supplemental information:
Additional Notes: jNO2 ~ 0.06 min-1