Identification

Title

ICARUS Chamber Experiment: 2014 FIXCIT Study_20140201_OZONE/CYCLOHEXANE_Ozone_No Seed_Characterization of GTHOS artifact with O3, HO2, and cyclohexane, 30% humidity, no seeds

Alternative title(s)

d789704

Abstract

<p>Goals:<br/> Test if the HO2 + O3 reaction contributes to the GTHOS artifact, at two RH conditions.</p> <p>Summary:<br/> Injections went smoothly. For the CF3O- CIMS, the products that were produced were mostly formic acid, H2O2, and HMHP. Ozone was constant over the course of ~2 hours, even with lights on, and decreased immediately upon the injection of formaldehyde. Cyclohexane did not appear to react at all throughout the experiment, and the cyclohexane hydroperoxide (m/z 201 on CF3O- CIMS) was not observed. HMHP was assumed to have been produced from the HCHO + HO2 reaction, as described by Niki et al, Chemical Physics Letters, 1980. There was a step-function increase of the cyclohexane signal in the GC-FID from the injection of formaldehyde. This additional signal was steady throughout the reaction, so we think there might have been some cyclohexane still left in the injection line that got injected in with the formaldehyde, and so this should not be regarded as a GC interference at the cyclohexane retention time by formaldehyde (which did not show up in the NO3 + formaldehyde experiments). The addition of water vapor decreased the HMHP signal greater than the dilution ratio, as marked by O3, indicating the HMHP signal may have a water sensitivity. Ozone did not further react away after the addition of water.</p> <p>Organization: 2014 FIXCIT Study<br/> Lab Affiliation: California Institute of Technology<br/> Chamber: Seinfeld chambers</p> <p>Experiment Category: Instrument/Chamber characterization<br/> Oxidant: Ozone<br/> Reactants: OZONE, CYCLOHEXANE<br/> Reaction Type: Photooxidation<br/> Relative Humidity: 31<br/> Temperature: 25<br/> Pressure: 750 Torr</p>

Resource type

dataset

Resource locator

https://gdex.ucar.edu/datasets/d789704/

protocol: https

name: Dataset Description

description: Related Link

function: information

https://gdex.ucar.edu/datasets/d789704/dataaccess/

protocol: https

name: Data Access

description: Related Link

function: download

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

environment

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2021-03-30

Keyword set

keyword value

LABORATORY > LABORATORY

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-03

Keyword set

keyword value

ICARUS > Integrated Chamber Atmospheric data Repository for Unified Science

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-03

Keyword set

keyword value

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

originating controlled vocabulary

title

reference date

date type

revision

effective date

2025-10-03

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

2014-02-01

End position

2014-02-01

Dataset reference date

date type

publication

effective date

2023-08-23

Frequency of update

notPlanned

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

NSF NCAR Geoscience Data Exchange

email address

datahelp@ucar.edu

web address

https://gdex.ucar.edu

name: NSF NCAR Geoscience Data Exchange

description: The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research.

function: download

responsible party role

pointOfContact

Metadata date

2025-10-09T01:45:27Z

Metadata language