Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis
We report the study of a liquid-like phase that is found in aqueous CH 3COOH solutions frozen to temperatures as low as 233K. Previous studies have shown that heterogeneous reactions of gases with halides in the liquid layers of ice are the source of lower tropospheric ozone-destroying halogen radic...
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ftpurdueuniv:oai:docs.lib.purdue.edu:dissertations-18409 2023-07-02T03:33:42+02:00 Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis Jones, Jade Bianca Shepson, Paul B. 2011-01-01T08:00:00Z https://docs.lib.purdue.edu/dissertations/AAI10156235 ENG eng Purdue University https://docs.lib.purdue.edu/dissertations/AAI10156235 Theses and Dissertations Available from ProQuest Atmospheric Chemistry|Analytical chemistry text 2011 ftpurdueuniv 2023-06-12T21:06:02Z We report the study of a liquid-like phase that is found in aqueous CH 3COOH solutions frozen to temperatures as low as 233K. Previous studies have shown that heterogeneous reactions of gases with halides in the liquid layers of ice are the source of lower tropospheric ozone-destroying halogen radicals, often found in regions with sea ice. Thus the investigation of a quasi-liquid phase is important to the understanding and modeling of atmospheric composition and its influence on and dependence on the chemistry of ice and snow. The fractions and concentrations of water and CH3COOH in this quasi-liquid phase were measured by 1H and 13C NMR spectroscopy, and the experimental results compared to previous results in the literature. The temperature dependence of the acid concentration is described by the freezing point depression, where ideal solution behavior holds, leading to predictable values for real snow and ice samples. Text Sea ice Purdue University: e-Pubs |
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Purdue University: e-Pubs |
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ftpurdueuniv |
language |
English |
topic |
Atmospheric Chemistry|Analytical chemistry |
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Atmospheric Chemistry|Analytical chemistry Jones, Jade Bianca Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis |
topic_facet |
Atmospheric Chemistry|Analytical chemistry |
description |
We report the study of a liquid-like phase that is found in aqueous CH 3COOH solutions frozen to temperatures as low as 233K. Previous studies have shown that heterogeneous reactions of gases with halides in the liquid layers of ice are the source of lower tropospheric ozone-destroying halogen radicals, often found in regions with sea ice. Thus the investigation of a quasi-liquid phase is important to the understanding and modeling of atmospheric composition and its influence on and dependence on the chemistry of ice and snow. The fractions and concentrations of water and CH3COOH in this quasi-liquid phase were measured by 1H and 13C NMR spectroscopy, and the experimental results compared to previous results in the literature. The temperature dependence of the acid concentration is described by the freezing point depression, where ideal solution behavior holds, leading to predictable values for real snow and ice samples. |
author2 |
Shepson, Paul B. |
format |
Text |
author |
Jones, Jade Bianca |
author_facet |
Jones, Jade Bianca |
author_sort |
Jones, Jade Bianca |
title |
Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis |
title_short |
Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis |
title_full |
Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis |
title_fullStr |
Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis |
title_full_unstemmed |
Investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1H and 13C NMR analysis |
title_sort |
investigations of acetic acid and its quantitative effects on the quasi-liquid layer through 1h and 13c nmr analysis |
publisher |
Purdue University |
publishDate |
2011 |
url |
https://docs.lib.purdue.edu/dissertations/AAI10156235 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Theses and Dissertations Available from ProQuest |
op_relation |
https://docs.lib.purdue.edu/dissertations/AAI10156235 |
_version_ |
1770273746174607360 |