Chemistry of chlorinated species in the Antarctic stratosphere
The chemistry of Cl sub 2 O sub 2, the chlorine monoxide dimer, has been further investigated in order to better asses its potential role in catalytic ozone destruction cycles. The dimer has been generated in a flow system, in the 200 to 250 K temperature range, by using ozone and chlorine atoms as...
Main Authors: | , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1988
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/19890005227 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19890005227 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19890005227 2023-05-15T13:35:10+02:00 Chemistry of chlorinated species in the Antarctic stratosphere Molina, Mario J. Wang, Frank C.-Y. Tso, Tai-Ly Unclassified, Unlimited, Publicly available May 1, 1988 application/pdf http://hdl.handle.net/2060/19890005227 unknown Document ID: 19890005227 Accession ID: 89N14598 http://hdl.handle.net/2060/19890005227 No Copyright CASI ENVIRONMENT POLLUTION NASA, Goddard Space Flight Center, Polar Ozone Workshop. Abstracts; p 251-252 1988 ftnasantrs 2015-03-15T05:59:46Z The chemistry of Cl sub 2 O sub 2, the chlorine monoxide dimer, has been further investigated in order to better asses its potential role in catalytic ozone destruction cycles. The dimer has been generated in a flow system, in the 200 to 250 K temperature range, by using ozone and chlorine atoms as ClO precursors. The Cl-atoms are produced by a microwave discharge of either Cl sub 2, or of F sub 2 with subsequent addition of HCl. With this later scheme the dimer can be generated in the absence of Cl sub 2. The Fourier transform infrared spectra of the products clearly indicates the presence of two isomers, in agreement with earlier results (J. Phys. Shen., 91, 433, 1987). None of the observed IR bands can be attributed to a ClO-OClO adduct, since they all appear in the absence of any detectable amount of OCl. It is likely that the particles in the polar stratospheric clouds will have a relatively dilute nitric acid outer layer, even if the core is the nitric acid monohydrate, since the particles are in equilibrium with the ambient water vapor, which is present at levels of a few parts per million. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
ENVIRONMENT POLLUTION |
spellingShingle |
ENVIRONMENT POLLUTION Molina, Mario J. Wang, Frank C.-Y. Tso, Tai-Ly Chemistry of chlorinated species in the Antarctic stratosphere |
topic_facet |
ENVIRONMENT POLLUTION |
description |
The chemistry of Cl sub 2 O sub 2, the chlorine monoxide dimer, has been further investigated in order to better asses its potential role in catalytic ozone destruction cycles. The dimer has been generated in a flow system, in the 200 to 250 K temperature range, by using ozone and chlorine atoms as ClO precursors. The Cl-atoms are produced by a microwave discharge of either Cl sub 2, or of F sub 2 with subsequent addition of HCl. With this later scheme the dimer can be generated in the absence of Cl sub 2. The Fourier transform infrared spectra of the products clearly indicates the presence of two isomers, in agreement with earlier results (J. Phys. Shen., 91, 433, 1987). None of the observed IR bands can be attributed to a ClO-OClO adduct, since they all appear in the absence of any detectable amount of OCl. It is likely that the particles in the polar stratospheric clouds will have a relatively dilute nitric acid outer layer, even if the core is the nitric acid monohydrate, since the particles are in equilibrium with the ambient water vapor, which is present at levels of a few parts per million. |
format |
Other/Unknown Material |
author |
Molina, Mario J. Wang, Frank C.-Y. Tso, Tai-Ly |
author_facet |
Molina, Mario J. Wang, Frank C.-Y. Tso, Tai-Ly |
author_sort |
Molina, Mario J. |
title |
Chemistry of chlorinated species in the Antarctic stratosphere |
title_short |
Chemistry of chlorinated species in the Antarctic stratosphere |
title_full |
Chemistry of chlorinated species in the Antarctic stratosphere |
title_fullStr |
Chemistry of chlorinated species in the Antarctic stratosphere |
title_full_unstemmed |
Chemistry of chlorinated species in the Antarctic stratosphere |
title_sort |
chemistry of chlorinated species in the antarctic stratosphere |
publishDate |
1988 |
url |
http://hdl.handle.net/2060/19890005227 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19890005227 Accession ID: 89N14598 http://hdl.handle.net/2060/19890005227 |
op_rights |
No Copyright |
_version_ |
1766061922633908224 |