ICARUS Chamber Experiment: Ziemann_20180211_Methyl nitrite/Nitric oxide/3-Decyl nitrate_Hydroxyl radical_DOS

Goals: Determine SOA yield of OH radical oxidation of the VOC

Summary: Experiments were performed at ambient temperature (?25°C) and pressure (?84?kPa) in an 8?m3 FEP Teflon environmental chamber. Purified air was supplied by AADCO clean air generators (<5?ppb hydrocarbons, and <1% RH). The chamber was first seeded with ?200?µg m?3 of either dioctyl sebocate (DOS) or dioctyl phthalate (DOP) polydisperse aerosol with peak particle diameter of ?200?nm, which was added from an evaporation-condensation source. A measured mass of an alkyl nitrate was then added from a heated glass bulb using ultra-high purity (UHP) N2. Thermal decomposition was avoided by heating the bulb to only ?65°C, well below the temperatures alkyl nitrates encounter during gas chromatographic analysis, and limiting the residence time in the gas phase to ?1?s by flushing with 15?L min?1 of UHP N2. Glass bulbs containing a measured pressure of methyl nitrite or NO were prepared on a vacuum manifold and added to the chamber with UHP N2 in amounts sufficient to achieve concentrations of 5?ppm of each in the chamber. Reactions were initiated by turning on blacklights that are located on two sides of the chamber for 60?min at a light intensity corresponding to an NO2 photolysis rate constant of 0.37?min?1. Under these conditions OH radicals were generated from the photolysis of methyl nitrite (Atkinson et al. 1981) with average concentrations of ?3?×?107 molecules cm?3, based on the amount of alkyl nitrate that reacted and an estimated rate constant for its reaction with OH radicals (Ziemann and Atkinson 2012).

Organization: Ziemann Lab Affiliation: University of Colorado, Boulder, Boulder, CO, USA Chamber: Janet (Chamber 1)

Experiment Category: Gas phase chemical reaction, Photolysis, any phase, Aerosol formation Oxidant: Hydroxyl radical Reactants: Methyl nitrite, Nitric oxide, 3-Decyl nitrate Reaction Type: Photooxidation Relative Humidity: 1 Temperature: 25 Seed Name: DOS Pressure: 630

To Access Resource:

Questions? Email Resource Support Contact:

  • DeVault, Marla
    marla.devault@colorado.edu
    Ziemann

Temporal Range

  • Begin:  2018-02-11
    End:  2018-02-11

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Resource Type dataset
Temporal Range Begin 2018-02-11
Temporal Range End 2018-02-11
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Bounding Box South Lat N/A
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Publication : Effect of the nitrate group on yields and composition of secondary organic aerosol formed from reactions of alkyl nitrates with OH radicals in the presence of NOx
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Resource Format Compressed Archive File (application/zip)
Standardized Resource Format Archive
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Creative Commons Attribution 4.0 International License.
Access Constraints These data are openly accessible by all registered users. Accounts are available free of charge following the registration of user information with a valid email address.
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Resource Support Name DeVault, Marla
Resource Support Email marla.devault@colorado.edu
Resource Support Organization Ziemann
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Metadata Contact Name GDEX Curator
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization UCAR/NCAR - GDEX

Author Ziemann, Paul
Publisher ICARUS Community
Publication Date 2022-01-07
Digital Object Identifier (DOI) https://doi.org/10.5065/fs6k-tk57
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Topic Category N/A
Progress N/A
Metadata Date 2022-01-27T09:12:22-07:00
Metadata Record Identifier edu.ucar.gdex::82d933ad-b21a-4241-8122-8e474fd3210c
Metadata Language eng; USA
Suggested Citation Ziemann, Paul. (2022). ICARUS Chamber Experiment: Ziemann_20180211_Methyl nitrite/Nitric oxide/3-Decyl nitrate_Hydroxyl radical_DOS. ICARUS Community. https://doi.org/10.5065/fs6k-tk57. Accessed 07 November 2024.

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