Identification

Title

ICARUS Chamber Experiment: 2014 FIXCIT Study_20140127_trans-beta-IEPOX/methyl nitrite_Hydroxyl radical_No Seed_Trans-beta-IEPOX + OH, moderate NO, dry, no seeds

Abstract

Goals: Allow everyone to sample trans-b-IEPOX for an intercomparison of sensitivities and a look at possible interferences; observe the products of IEPOX + OH oxidation, which we expect to include hydroxyacetone, glycolaldehyde, glyoxal, methylglyoxal, and C4H8O3 and C4H6O3 compounds. Summary: Today's experiment went largely according to plan. We successfully injected a large amount of IEPOX (we estimate 60-70 ppbv) over the course of 2.5 hours. Following the injection, the CF3O- CIMS saw significant wall loss, totaling ~25% in 3 hours. This is similar to the wall loss observed during IEPOX experiments last summer (~7%/hour in the same bag with high levels of HNO3), which may imply that the walls are currently highly acidified. When lights were turned on, IEPOX reacted quickly; ~50% of the IEPOX remaining when lights were turned on reacted away within an hour, and a further 20% was lost in the next two hours. The CF3O- CIMS observed many of the expected oxidation products, including hydroxyacetone, glycolaldehyde, C4H8O3, C4H6O3, and C5H8O3. Glyoxal did see an increase in signal, though they also had high noise levels. O3 reached 150 ppbv by the end of the experiment, and AMS did not see significant nucleation or aerosol growth. Organization: 2014 FIXCIT Study Lab Affiliation: California Institute of Technology Chamber: Seinfeld chambers Experiment Category: Gas phase chemical reaction Oxidant: Hydroxyl radical Reactants: trans-beta-IEPOX, methyl nitrite Reaction Type: Photooxidation Relative Humidity: 5 Temperature: 25 Pressure: 750 Torr

Resource type

dataset

Resource locator

https://gdex.ucar.edu/dataset/id/99c38621-7845-4c32-9c48-584dec620c6a.html

protocol: https

applicationProfile: browser

name: ICARUS Chamber Experiment: 2014 FIXCIT Study_20140127_trans-beta-IEPOX/methyl nitrite_Hydroxyl radical_No Seed_Trans-beta-IEPOX + OH, moderate NO, dry, no seeds

description: Metadata Link

function: download

Unique resource identifier

code

codeSpace

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code identifying the spatial reference system

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Topic category

Keywords

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keyword value

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

2014-01-27

End position

2014-01-27

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publication

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2021-10-12

date type

modified

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2021-10-12

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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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organisation name

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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