Experiment: Jimenez Lab_20180313_1-DECANOL/Methyl nitrite/nitric oxide_Hydroxyl radical_DOS_415.6_ug/m3_DOS1

Experiment

Name: Jimenez Lab_20180313_1-DECANOL/Methyl nitrite/nitric oxide_Hydroxyl radical_DOS_415.6_ug/m3_DOS1
Date: 2018-03-13

Organization
Jimenez Lab

Chamber
1-White (1W)

Experiment Set
Gas-aerosol-wall partitioning kinetics from Liu CC 2019 (various organic and inorganic seed aerosol types)

Goals
Fast burst photooxidation of alkanols (high-NOx). Gas-aerosol-wall partitioning kinetics. Determine accommodation coefficient (alpha) and effective volatility under differing seed aerosol types (differing phase and polarities, inorganic/organic, humid/dry, standards/SOA).

Summary
Alkanols, Methyl nitrite, NO, and particle seed added to chamber, UV lights turned on for 10 sec, multifunctional products formed. In most experiments in this experimental set, 10-s UV light/photochemistry burst repeated a few times. SMPS measurements of particle size distributions were conducted to determine particle formation, surface area and condensational sink rate coefficients. Particle-phase chemical species were measured with EESI-MS.

Experiment Details

Categories:

  • Volatility and partitioning
Temperature: 25
Relative Humidity: <1
Seeded Experiment: Yes
Type of Seed: DOS
Initial Seed Concentration Value: 415.6
Seed Concentration Units: micrograms_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: <1
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 4.4E8 (molecules_per_cubic_centimeter)
RO2 Main Fate: NO
RO2 Lifetime: 1.5 (Seconds)
Pressure:

Data Sets

ID Instrument File  
1967 SMPS D20180313_SMPSData.csv
1968 1W Chamber Sensors 20180313_Chambersensors.csv
3627 EESI-TOF (EESI-MS) D20180313_EESI_Data.csv

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

Experiment Set Details

Name: Gas-aerosol-wall partitioning kinetics from Liu CC 2019 (various organic and inorganic seed aerosol types)
Time format and units: All times UTC. Data is in Igor time, sec since midnight 1904
Description:
Fast burst photooxidation of alkanols (high-NOx). Gas-aerosol-wall partitioning kinetics of multifunctional oxidize species generated. Determine accommodation coefficient (alpha) and effective volatility under differing seed aerosol types (differing phase and polarities, inorganic/organic, humid/dry, standards/SOA). (Liu et al., 2019). In one experiment, toluene was oxidized instead of the alkanol mixture. These data were also used for investigating activity coefficients (gamma) of the oxidized species in the different seed particles (Liu et al., 2021).

Collaborators:

Download

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Contacts

Principal investigator:

Jose L Jimenez
E-mail: jose.jimenez@colorado.edu
OrcID: https://orcid.org/0000-0001-6203-1847

Data Manager:

Anne Handschy
E-mail: cudatabasemanager@gmail.com

Reactants

Reactant Compound type Concentration Concentration units
1-DECANOL (8174)
  • Alcohol
 90 Parts Per Billion
Methyl nitrite (12231) 4 Parts Per Million
nitric oxide (145068)
  • NOx
 4 Parts Per Million

20180313_Timelines.csv Timeline

Time_UTC Event
20:26 Injected ~20 ug/m3 DOS (14.5 min) 
20:39 HEPA filter 
8:38 Stop HEPA filter; 25 Torr NO 
21:43 20.3 Torr MeONO 
22:04 Added another 23.8 Torr MeONO from 4th floor in case ours is only impurity 
22:09 Lights on again ;Changed to old TPS setting, now seeing signals 
22:54 Fill bag to max after 3 bursts 
22:55 start HEPA fliter ; 3min burst 
23:00 stop HEPA
23:49 start HEPAPM
23:58 stop HEPA filter 
0:04 Add more DOS to see if there's EESI signal 
0:40 Stop Add more DOS to see if there's EESI signal 

Citations
Cite this experiment: Publications associated with this experiment:

Characterizations
Light Flux Characterizations:
2021-12-24 (#38)
Particle Loss Characterizations:
2021-11-04 (#32)
Vapor Loss Characterizations:
2021-11-05 (#12)

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 Flushing with air with UV lights on
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 fluorscent bulbs
Supplemental information:
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