Laboratory studies of HNO3/H2O mixtures at low temperatures
The possibility of stratospheric HN3 condensing out of the gas-phase at low temperatures has become important in the chemical explanations of the rapid loss of Antarctic ozone in spring. Consequently, knowledge about the behavior of the vapor pressures of water and HNO3 over HNO3/water mixtures at s...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19890005162 2023-05-15T13:35:11+02:00 Laboratory studies of HNO3/H2O mixtures at low temperatures Mauersberger, Konrad Hanson, David Unclassified, Unlimited, Publicly available May 1, 1988 application/pdf http://hdl.handle.net/2060/19890005162 unknown Document ID: 19890005162 Accession ID: 89N14533 http://hdl.handle.net/2060/19890005162 No Copyright CASI ENVIRONMENT POLLUTION NASA, Goddard Space Flight Center, Polar Ozone Workshop. Abstracts; p 80-82 1988 ftnasantrs 2015-03-15T05:59:55Z The possibility of stratospheric HN3 condensing out of the gas-phase at low temperatures has become important in the chemical explanations of the rapid loss of Antarctic ozone in spring. Consequently, knowledge about the behavior of the vapor pressures of water and HNO3 over HNO3/water mixtures at stratospheric temperatures is needed to determine if HNO3 could condense, and by how much the HNO3 vapor pressure could be depressed. Laboratory investigations of vapor pressures above HNO3/water mixtures are described. Vapor pressures were initially measured over liquid and frozen bulk mixtures contained in a glass still which was attached to a stainless steel vacuum chamber. The total pressure in the chamber was monitored with a precision pressure sensor, and the vapor pressures of HNO3, water and impurities were analyzed with a mass spectrometer beam system. In a second set of experiments, vapor deposits were made to produce ice and the mono- and trihydrate of HNO3. Further data and conclusions are presented. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
ENVIRONMENT POLLUTION |
spellingShingle |
ENVIRONMENT POLLUTION Mauersberger, Konrad Hanson, David Laboratory studies of HNO3/H2O mixtures at low temperatures |
topic_facet |
ENVIRONMENT POLLUTION |
description |
The possibility of stratospheric HN3 condensing out of the gas-phase at low temperatures has become important in the chemical explanations of the rapid loss of Antarctic ozone in spring. Consequently, knowledge about the behavior of the vapor pressures of water and HNO3 over HNO3/water mixtures at stratospheric temperatures is needed to determine if HNO3 could condense, and by how much the HNO3 vapor pressure could be depressed. Laboratory investigations of vapor pressures above HNO3/water mixtures are described. Vapor pressures were initially measured over liquid and frozen bulk mixtures contained in a glass still which was attached to a stainless steel vacuum chamber. The total pressure in the chamber was monitored with a precision pressure sensor, and the vapor pressures of HNO3, water and impurities were analyzed with a mass spectrometer beam system. In a second set of experiments, vapor deposits were made to produce ice and the mono- and trihydrate of HNO3. Further data and conclusions are presented. |
format |
Other/Unknown Material |
author |
Mauersberger, Konrad Hanson, David |
author_facet |
Mauersberger, Konrad Hanson, David |
author_sort |
Mauersberger, Konrad |
title |
Laboratory studies of HNO3/H2O mixtures at low temperatures |
title_short |
Laboratory studies of HNO3/H2O mixtures at low temperatures |
title_full |
Laboratory studies of HNO3/H2O mixtures at low temperatures |
title_fullStr |
Laboratory studies of HNO3/H2O mixtures at low temperatures |
title_full_unstemmed |
Laboratory studies of HNO3/H2O mixtures at low temperatures |
title_sort |
laboratory studies of hno3/h2o mixtures at low temperatures |
publishDate |
1988 |
url |
http://hdl.handle.net/2060/19890005162 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19890005162 Accession ID: 89N14533 http://hdl.handle.net/2060/19890005162 |
op_rights |
No Copyright |
_version_ |
1766062034139480064 |