Experiment: Browne Lab_20230808_Hydrogen Peroxide/Cyclomethicone 5_Hydroxyl radical_No Seed_E1

Experiment

Name: Browne Lab_20230808_Hydrogen Peroxide/Cyclomethicone 5_Hydroxyl radical_No Seed_E1
Date: 2023-08-08

Organization
Browne Lab

Chamber
1-White (1W)

Experiment Set
D5 oxidation unseeded

Goals
Investigate SOA formation from D5 oxidation without seeds with CIMS, SMPS. Filter samples were collected.

Summary
The siloxanol was the major gas-phase product and no SOA was formed.

Experiment Details

Categories:

  • Gas phase chemical reaction
  • Aerosol formation
Temperature: 22
Relative Humidity: 0
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 1e7 (molecules_per_cubic_centimeter)
RO2 Main Fate: HO2
RO2 Lifetime: (Seconds)
Pressure: 860 mbar

Data Sets

ID Instrument File  
4531 Toluene CIMS E1_CIMS.csv
4537 1W Chamber Sensors E1_chamber.csv
4538 SMPS E1_SMPS.csv

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

Experiment Set Details

Name: D5 oxidation unseeded
Time format and units: M/D/YYYY h:mm:ss (local)
Description:
CIMS, SMPS, chamber data for measurements of D5 oxidation with H2O2 oxidant precursor. No seed aerosol.

Collaborators:

  • Hanalei Lewine University of Colorado Boulder
  • Eleanor C Browne University of Colorado Boulder

Download

Download this Experiment (21.82 KB)

Contacts

Principal investigator:

Eleanor Browne
Phone: 303-735-7685
E-mail: eleanor.browne@colorado.edu
OrcID: 0000-0002-8076-9455

Data Manager:

Eleanor Browne
E-mail: eleanor.browne@colorado.edu

Reactants

Reactant Compound type Concentration Concentration units
Hydrogen Peroxide (784)
  • Hydroperoxide
 3 Parts Per Million
Cyclomethicone 5 (10913) 76 Parts Per Billion

E1_timeline.csv Timeline

tlocal_event event
8/8/2023 10:15:00 filling chamber to full volume
8/8/2023 10:17:55 finished injecting D5 and ran fan
8/8/2023 10:36:01 finished injecting H2O2 and ran fan
8/8/2023 10:54:29 lights on
8/8/2023 12:58:09 lights off
8/8/2023 13:02:36 starting filter collection
8/8/2023 13:09:01 lowered top of chamber
8/8/2023 14:13:00 lowered top of chamber
8/8/2023 15:40:27 lowered top of chamber
8/8/2023 16:15:00 stop filter collection

Citations

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

Chamber Details

Name: 1-White (1W)
Volume in cubic meters: 20
Shape: Rectangular Prism
Surface area in cubic meters: 22.65
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date: 2014-07-01
Replacement frequency: As needed
Cleaning method: Flushing with air
o3 background: 0
nox background: 0
Particle background in micrograms per cubic meter:
Air filtration method: AADCO 737-15, Parker Balston IT0500-3560
Mixing method: 1
Mixing method material: PTFE-coated steel fan
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): 0
Relative humidity range (max percent): 85
Particle experiment capability: 1
Lights: Yes
Light source type(s): UVA Black Lamps, Visible fluorescent bulbs
Supplemental information: This chamber is the same as the Jimenez lab 1W chamber (https://icarus.ucdavis.edu/chamber/534).
Additional Notes: UV_LIGHT_TYPE: F40/350BL/ECO (40W) and FR48T12/BL-350/VHO/182 (115W) UV_LIGHT_PEAK_EMISSION_WAVELENGTH (nm): 350 (FWHM=20) VISIBLE_LIGHT_TYPE: T5HO tubes (54W) VISIBLE_LIGHT_PEAK_EMISSION_WAVELENGTH (nm): 490 Number of lights: x 115W UV tubes, y 40W UV tubes, z Vis tubes All three types of lights are evenly distributed between four walls of the chamber See light characterization metafiles for more information.