Identification

Title

ICARUS Chamber Experiment: 2014 FIXCIT Study_20140102_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, low NO, dry, no seeds

Abstract

Goals: Low NO isoprene oxidation experiment to test the waters. Interested mainly in: -do instruments see the usual chemical compounds (ISOPOOH, IEPOX) -are instruments affected by ppm H2O2 levels -working out potential pitfalls in chamber method with this many instruments Summary: Resolved initial issues with sampling lines and injection lines. Initial H2O2 addition may have been lower due to an eventually fixed issue with a lower injection line pressure. Isoprene injection proceeded as normally, but we started sampling before the prescribed 30 minutes of mixing for hydrocarbon (out of eagerness?). For future runs, it is probably advantageous to add hydrocarbon/standard first, then add H2O2. After approximately 30-45 minutes of sampling, instruments reported stable backgrounds so the full bank of UV lights were turned on. Based on initial reports, the chemistry proceeded as expected. Approximate calculation of RO2 reaction with NO vs. HO2 yielded a 1:14 ratio in the initial (~10min) phase of the experiment, which is very good. Peak ISOPOOH was reached at ~1.5-2hrs into the experiment. Bag volume was checked at 23:17. Organization: 2014 FIXCIT Study Lab Affiliation: California Institute of Technology Chamber: Seinfeld chambers Experiment Category: Gas phase chemical reaction Oxidant: Hydroxyl radical Reactants: ISOPRENE, hydrogen peroxide Reaction Type: Photooxidation Relative Humidity: 5 Temperature: 27 Pressure: 750 Torr

Resource type

dataset

Resource locator

https://gdex.ucar.edu/dataset/id/64a52454-8bc6-4cfe-87e7-86639602945a.html

protocol: https

applicationProfile: browser

name: ICARUS Chamber Experiment: 2014 FIXCIT Study_20140102_ISOPRENE/hydrogen peroxide_Hydroxyl radical_No Seed_Isoprene + OH, low NO, dry, no seeds

description: Metadata Link

function: download

Unique resource identifier

code

codeSpace

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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

Keyword set

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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

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Temporal reference

Temporal extent

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2014-01-02

End position

2014-01-02

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publication

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2021-10-12

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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

Metadata point of contact

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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