Experiment: Kroll Lab_20220713_Dimethyl Sulfoxide/Acetonitrile/Hydrogen Peroxide/Ozone_Hydroxyl radical_Sodium nitrate_Clone

Experiment

Name: Kroll Lab_20220713_Dimethyl Sulfoxide/Acetonitrile/Hydrogen Peroxide/Ozone_Hydroxyl radical_Sodium nitrate_Clone
Date: 2022-07-13

Organization
Kroll Lab

Chamber
Kroll main chamber

Experiment Set
DMSO and DMDS oxidation experiments

Goals
Measure product distribution from the oxidation of DMSO under low NOx conditions. Try perturbing with ozone to see if it changes the product distribution.

Summary
DMSO oxidized using H2O2 as the oxidant precursor. Adding ozone midway through the experiment did not affect product formation. This is "Experiment 3" in Goss and Kroll, ACP, 2023 (Submitted).

Additional Notes
An issue with the dilution set up for the PTR3 sample inlet caused loss of data from time = 4934 to 10874 seconds (see paper for more details). Note that NOx and ozone data are not dilution corrected.

Experiment Details

Categories:

  • 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: HO2
RO2 Lifetime: (Seconds)
Pressure:

Data Sets

ID Instrument File  
4469 AMS (as used for sulfur product characterization) 20220713 AMS data.csv
4470 modified PTR3 20220713 PTR3 data.csv
4471 NOx box 20220713 NOx data.csv
4472 Ozone monitor 20220713 ozone data.csv
4473 SO2 monitor 20220713 SO2 data.csv

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
Description:
These experiments examine the oxidation of dimethyl sulfoxide (DMSO) and dimethyl disulfide (DMDS) under varied NOx conditions.

Collaborators:

Download

Download this Experiment (271.97 KB)

Contacts

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

Reactants

Reactant Compound type Concentration Concentration units
Dimethyl Sulfoxide (679) 58 Parts Per Billion
Acetonitrile (6342) 4.5 Parts Per Billion
Hydrogen Peroxide (784) 3000 Parts Per Billion
Ozone (24823) 105 Parts Per Billion

20220713 experiment timeline.csv Timeline

Time (seconds) Event Description
-6180 Seed added
-5100 acetonitrile added
-3540 DMSO added
-1800 H2O2 added
0 Lights turned on
8580 ozone added
16380 Experiment end

Citations
Cite this experiment:

Characterizations
Light Flux Characterizations:
(None)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)

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