Identification

Title

ICARUS Chamber Experiment: Caltech Atmospheric Chamber_20130415_trans-beta IEPOX/hydrogen peroxide_Hydroxyl radical_Ammonium sulfate_AqueousPhotooxidation

Alternative title(s)

d789661

Abstract

<p>Goals:<br/> This is similar to the 130410 experiment except that H2O2 is atomized with ammonium sulfate in the particles. IEPOX was introduced to hydrated ammonium sulfate at 50% RH, the chamber was cooled to to remove the IEPOX from the gas phase (no more traces in CIMS); this increased the RH to ~80%) then lights turned on to photolyze the IEPOX on the particles.</p> <p>Summary:<br/> Gaseous H2O2 was not observed when the H2O2 was atomized with AS in the particle, which suggests all the reaction was in the particle phase. The organic aerosol as seen on AMS reacted nearly all away. Fragmentation products such as hydroxyacetone, glycolaldehyde, formic acid, acetic acid, and peroxyacetic acid were seen as products on CIMS</p> <p>Organization: Caltech Atmospheric Chamber<br/> Lab Affiliation: California Institute of Technology, Pasadena, CA<br/> Chamber: Near/Far Bag 2012-2015 (Tran)</p> <p>Experiment Category: Condensed-phase chemical reaction, Multiphase chemical reaction<br/> Oxidant: Hydroxyl radical<br/> Reactants: trans-beta IEPOX, hydrogen peroxide<br/> Reaction Type: Photooxidation, Heterogeneous oxidation, Other aqueous/aerosol phase<br/> Relative Humidity: 49-80<br/> Temperature: 16-22<br/> Seed Name: Ammonium sulfate<br/> Pressure: 750 Torr</p>

Resource type

dataset

Resource locator

https://gdex.ucar.edu/datasets/d789661/

protocol: https

name: Dataset Description

description: Related Link

function: information

https://gdex.ucar.edu/datasets/d789661/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

2013-04-15

End position

2013-04-15

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

2025-10-09T01:44:29Z

Metadata language