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Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents
It has been found that the gas chromatography of ammonia on certain fixed phases containing salts yields chromatograms consisting of a peak followed by a plateau or a succession of plateaux of progressively decreasing height. Such chromatograms have been interpreted in terms of ammine formation in t...
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| Format: | Thesis |
| Language: | English |
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Department of Chemistry
2016
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| _version_ | 1867613266804473856 |
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| access_status_str | Open Access |
| author | Du Plessis, Louis Armand |
| author2 | Spong, A H |
| author_browse | Du Plessis, Louis Armand Spong, A H |
| author_facet | Spong, A H Du Plessis, Louis Armand |
| author_sort | Du Plessis, Louis Armand |
| collection | Thesis |
| description | It has been found that the gas chromatography of ammonia on certain fixed phases containing salts yields chromatograms consisting of a peak followed by a plateau or a succession of plateaux of progressively decreasing height. Such chromatograms have been interpreted in terms of ammine formation in the column and methods have been theoretically elaborated for using measurements on the chromatograms to find the dissociation pressures of the ammines and the ratios of ammonia taken up to silver in the fixed phase. These methods require the calibration of the detector, so that ammonia partial pressures can be found from chromatogram heights, and this has been done by a chromatographic method. In most cases, the ratio of ammonia to silver in the fixed phase does not yield conclusive information on ammnine composition, because there is usually evidence that the salt is present in different forms or is only partially converted to ammine. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/22308 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:25.185Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Chemistry |
| publisherStr | Department of Chemistry |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/22308 Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents Du Plessis, Louis Armand Spong, A H Chemistry It has been found that the gas chromatography of ammonia on certain fixed phases containing salts yields chromatograms consisting of a peak followed by a plateau or a succession of plateaux of progressively decreasing height. Such chromatograms have been interpreted in terms of ammine formation in the column and methods have been theoretically elaborated for using measurements on the chromatograms to find the dissociation pressures of the ammines and the ratios of ammonia taken up to silver in the fixed phase. These methods require the calibration of the detector, so that ammonia partial pressures can be found from chromatogram heights, and this has been done by a chromatographic method. In most cases, the ratio of ammonia to silver in the fixed phase does not yield conclusive information on ammnine composition, because there is usually evidence that the salt is present in different forms or is only partially converted to ammine. 2016-10-25T13:39:05Z 2016-10-25T13:39:05Z 1960 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/22308 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry Du Plessis, Louis Armand Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents |
| thesis_degree_str | Doctoral |
| title | Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents |
| title_full | Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents |
| title_fullStr | Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents |
| title_full_unstemmed | Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents |
| title_short | Studies in the gas chromatography of ammonia, with special reference to packings containing solutions of silver salts in some organic solvents |
| title_sort | studies in the gas chromatography of ammonia with special reference to packings containing solutions of silver salts in some organic solvents |
| topic | Chemistry |
| url | http://hdl.handle.net/11427/22308 |
| work_keys_str_mv | AT duplessislouisarmand studiesinthegaschromatographyofammoniawithspecialreferencetopackingscontainingsolutionsofsilversaltsinsomeorganicsolvents |