Identification

Title

ICARUS Chamber Experiment: 2014 FIXCIT Study_20140130_PINONALDEHYDE/Pinonic acid/Methyl nitrite_Hydroxyl radical_No Seed_Pinonaldehyde + OH, moderate NO, dry, no seeds

Abstract

Goals: Explore the gas-phase chemistry of pinonaldehyde when HO2, NO, and NO2 are all present. Summary: Synthesized pinonaldehyde was added through a heated line for a few hours to get enough into the bag. This was the first time we had injected pinonaldehyde and learned that next time, we shouldn't heat the injection line or the bulb because that facilitates the oxidation of pinonaldehyde to pinonic acid. Thus both were injected at initial mixing ratios of ~ 15 ppb (with a fair amount of uncertainty) to ~ 10-20 ppb pinonic acid (also with uncertainty). The pinonic acid is expected to react with OH about 4 times slower than pinonaldehyde, although there is a channel for the production of pinonic acid from the pinonaldehyde photooxidation as well. After initiating OH oxidation by methyl nitrite photolysis, CF3O- CIMS observed that almost all of the carbon ended up as the PAN of pinonaldehyde (which Geoff calls"PiPAN"). Perhaps due to the high formation of the PiPAN, we observed high amounts of nucleated organic aerosol (~ 40 ug/m3 at the end of the experiment). At the end of the experiment, most of the pinonaldehyde was gone, but more than half of the pinonic acid was left (perhaps because it's produced as well as lost through OH oxidation). We injected methyl nitrite twice, to replenish the OH. At the end, lights were turned off and the bag was flushed within 20 minutes. Organization: 2014 FIXCIT Study Lab Affiliation: California Institute of Technology Chamber: Seinfeld chambers Experiment Category: Gas phase chemical reaction Oxidant: Hydroxyl radical Reactants: PINONALDEHYDE, Pinonic acid, Methyl nitrite Reaction Type: Photooxidation Relative Humidity: 5 Temperature: 26 Pressure: 750 Torr

Resource type

dataset

Resource locator

https://gdex.ucar.edu/dataset/id/5965b032-7329-4943-a562-c141b5ab9ce2.html

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applicationProfile: browser

name: ICARUS Chamber Experiment: 2014 FIXCIT Study_20140130_PINONALDEHYDE/Pinonic acid/Methyl nitrite_Hydroxyl radical_No Seed_Pinonaldehyde + OH, moderate NO, dry, no seeds

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codeSpace

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Dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2014-10-16

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > AEROSOLS

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE GASES/TRACE SPECIES

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-03-15

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Other > Physical Models > Laboratory > Laboratory

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-03-15

Keyword set

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In Situ/Laboratory Instruments > Chemical Meters/Analyzers

originating controlled vocabulary

title

reference date

date type

revision

effective date

2018-03-15

Geographic location

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Temporal reference

Temporal extent

Begin position

2014-01-30

End position

2014-01-30

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publication

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2021-10-07

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modified

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2021-10-07

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Compressed Archive File (application/zip)

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Creative Commons Attribution 4.0 International License.

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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.

Responsible organisations

Responsible party

organisation name

2014 FIXCIT Study

email address

tbn@ucdavis.edu

responsible party role

pointOfContact

Metadata on metadata

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UCAR/NCAR - GDEX

email address

datahelp@ucar.edu

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pointOfContact

Metadata date

2022-01-27T09:12:22-07:00

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