Experiment: Browne Lab_20210325_Chlorine/Decamethylcyclopentasiloxane/Acetonitrile_Chlorine radical_No Seed
Experiment
Name: Browne Lab_20210325_Chlorine/Decamethylcyclopentasiloxane/Acetonitrile_Chlorine radical_No Seed
Date: 2021-03-25
Organization
Browne Lab
Chamber
Browne Lab Main Chamber
Experiment Set
D5 Experiments
Goals
Oxidized D5 using Cl2 as the radical precursor to encourage RO2 isomerization/isomerization reactions.
Summary
We generally saw the same products as when other oxidants were used, even with very different RO2 lifetimes.
Additional Notes
NOx was not measured on the same day as the CIMS data was taken. NOx data is from a repeat experiments without any CIMS measurements.Experiment Details
Categories:
- Gas phase chemical reaction
Relative Humidity: 0-5
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0-5
Reaction type:
Oxidant Name: Chlorine radical
Initial Oxidant Concentration Value: 4e5 (molecules_per_cubic_centimeter)
RO2 Main Fate: Autoxidation/Isomerization
RO2 Lifetime: 46 (Seconds)
Pressure: 860 mbar
Data Sets
| ID | Instrument | File | |
|---|---|---|---|
| 3978 | Toluene CIMS |
D5Cl2_20210325.csv
|
|
| 3979 | NOx Box |
20210426_D5_Cl2_NOx.csv
|
Data Set plots
Experiment Set Details
Name: D5 Experiments
Time format and units: CIMS time is in number of seconds since Jan 1st, 1904 in UTC. NOx data is in M/D/Y Hr:Min:Sec format in local time.
Description:
CIMS and NOx data (if available) for measurements of D5 oxidation with conditions favoring different peroxy radical fates. Three radical precursors were used: HONO, H2O2, and Cl2.
Collaborators:
- Mitchell Alton University of Colorado at Boulder
- Eleanor Browne University of Colorado at Boulder
Contacts
Principal investigator:
Eleanor Browne
Phone: 303-735-7685
E-mail: eleanor.browne@colorado.edu
OrcID: 0000-0002-8076-9455
Data Manager:
Mitchell Alton
E-mail: mitchell.alton@colorado.edu
D5Cl2_20210325_Logs.csv
Timeline
| tw_wv_logText | tw_wv_logTime |
| Acquisition started (ID# 0) | 3699529916 |
| chamber background | 3699529925 |
| about to add 20uL ACN | 3699530037 |
| adding Cl2 | 3699530178 |
| about to add 1uL D5 | 3699530266 |
| 850sccm dry | 700sccm wet |
| letting everything mix | 3699530592 |
| background | 3699530625 |
| done adding Cl2 | 3699530932 |
| back to sampling chamber w. 850+700sccm dilution | 3699530975 |
| no diluition into chamber | 3699531146 |
| 8 bulbs on | 3699532091 |
| End of acquisition | 3699533523 |
| Acquisition started (ID# 1) | 3699533523 |
| End of acquisition | 3699537130 |
| Acquisition started (ID# 2) | 3699537131 |
| lights off | 3699540462 |
| End of acquisition | 3699540738 |
| Acquisition started (ID# 3) | 3699540738 |
| Acquisition aborted after 259 complete writes. 8 additional bufs in the incomplete last write. | 3699543342 |
Citations
Characterizations
(None)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)
Chamber Details
Name: Browne Lab Main Chamber
Volume in cubic meters: 1
Shape:
Surface area in cubic meters: 8
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date: 2017-10-01
Replacement frequency: As needed
Cleaning method:
Flushing with air
Flushing with air with UV lights on
Oxidation
o3 background:
nox background:
Particle background in micrograms per cubic meter:
Air filtration method: Uses Aadco clean air
Mixing method: 0
Mixing method material:
Temparature Control: No
Temparature measurements recorded: No
Temparature range (min degrees celcius):
Temparature range (max degrees celcius):
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 0
Relative humidity range (max percent): 80
Particle experiment capability: 1
Lights: Yes
Light source type(s):
Up to 10 fluorescent bulbs centered at 370nm, Up to 4 fluorescent bulbs centered at 254nm
Supplemental information:
Additional Notes: