Experiment: Kroll Lab_20220715_Hydrogen Peroxide/Nitrous Acid/Nitric Oxide/Dimethyl Sulfoxide/Acetonitrile/Methylene Chloride_Hydroxyl radical_Sodium nitrate
Experiment
Name: Kroll Lab_20220715_Hydrogen Peroxide/Nitrous Acid/Nitric Oxide/Dimethyl Sulfoxide/Acetonitrile/Methylene Chloride_Hydroxyl radical_Sodium nitrate
Date: 2022-07-15
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, perturbing halfway through the experiment with an addition of HONO as a source of NOx
Summary
DMSO oxidized under low NOx conditions, perturbing halfway through the experiment with an addition of HONO as a source of NOx. This is "Experiment 1" in Goss and Kroll, ACP, 2023 (Submitted).
Additional Notes
Dichloromethane was added halfway through the experiment to examine its effect on product distribution, since it had been present in several previous experiments. Note that NOx and ozone data are not dilution corrected.Experiment Details
Categories:
- Gas phase chemical reaction
- Aerosol formation
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 | |
|---|---|---|---|
| 4459 | NOx box |
20220715 ozone data.csv
|
|
| 4460 | Ozone monitor |
20220715 ozone data.csv
|
|
| 4461 | AMS (as used for sulfur product characterization) |
20220715 AMS data.csv
|
|
| 4462 | modified PTR3 |
20220715 PTR3 data.csv
|
|
| 4463 | SO2 monitor |
20220715 SO2 data.csv
|
Data Set plots
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:
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 |
|---|---|---|---|
| Hydrogen Peroxide (784) | 3000 | Parts Per Billion | |
| Nitrous Acid (24529) | 22 | Parts Per Billion | |
| Nitric Oxide (145068) | 18 | Parts Per Billion | |
| Dimethyl Sulfoxide (679) | 60 | Parts Per Billion | |
| Acetonitrile (6342) | 4.5 | Parts Per Billion | |
| Methylene Chloride (6344) | 600 | Parts Per Billion |
20220715 experiment timeline.csv
Timeline
| Time (seconds) | Event Description |
| -5880 | Seed added |
| -4920 | acetonitrile added |
| -3720 | DMSO added |
| -1800 | H2O2 added |
| 0 | Lights turned on |
| 5100 | Lights turned off |
| 6900 | dichloromethane added |
| 7440 | Lights turned on |
| -32640 | Lights turned off |
| -30300 | HONO added (includes some NO) |
| -29340 | Lights turned on |
| -21120 | Lights turned off |
Citations
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