Dynamic Method for the Determination of Hygroscopicity of Water-Soluble Solids; Journal of Solution Chemistry; Vol. 49, iss. 7-8
| Parent link: | Journal of Solution Chemistry Vol. 49, iss. 7-8.— 2020.— [P. 1029-1051] |
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| Autore principale: | |
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| Riassunto: | Title screen This article presents an extensive examination of a variant of the dynamic method for determining hygroscopic points of pure soluble substances (relative air humidity over the substance’s saturated solution), in which equal amounts of the investigated substance and the reference substance are held in identical sample cups in a sealed chamber for the time that is long enough to change the samples’ mass by 0.05–0.15 g. Examples of the experiment procedures aimed at determining the water vapor absorption/desorption rate coefficient and hygroscopic points values are provided. The effects of the driving force behind the hygroscopic process, relative humidity, cup’s shape, fill level of cups, and chamber volume on the kinetics of samples’ mass changes in the chamber are considered. The experiment technique is organized in such a way that the influence of ambient air is offset in calculations. The method does not require any special laboratory equipment, has a simple implementation technique, and yields the determination results with the reasonable uncertainty that is sufficient for practical purposes. Режим доступа: по договору с организацией-держателем ресурса |
| Lingua: | inglese |
| Pubblicazione: |
2020
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| Soggetti: | |
| Accesso online: | https://doi.org/10.1007/s10953-020-01007-w |
| Natura: | Elettronico Capitolo di libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663448 |
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| 200 | 1 | |a Dynamic Method for the Determination of Hygroscopicity of Water-Soluble Solids |f A. G. Tereshchenko | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 67 tit.] | ||
| 330 | |a This article presents an extensive examination of a variant of the dynamic method for determining hygroscopic points of pure soluble substances (relative air humidity over the substance’s saturated solution), in which equal amounts of the investigated substance and the reference substance are held in identical sample cups in a sealed chamber for the time that is long enough to change the samples’ mass by 0.05–0.15 g. Examples of the experiment procedures aimed at determining the water vapor absorption/desorption rate coefficient and hygroscopic points values are provided. The effects of the driving force behind the hygroscopic process, relative humidity, cup’s shape, fill level of cups, and chamber volume on the kinetics of samples’ mass changes in the chamber are considered. The experiment technique is organized in such a way that the influence of ambient air is offset in calculations. The method does not require any special laboratory equipment, has a simple implementation technique, and yields the determination results with the reasonable uncertainty that is sufficient for practical purposes. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Solution Chemistry | ||
| 463 | |t Vol. 49, iss. 7-8 |v [P. 1029-1051] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a determination of hygroscopic points | |
| 610 | 1 | |a dynamic method | |
| 610 | 1 | |a hygroscopicity | |
| 610 | 1 | |a deliquescence | |
| 610 | 1 | |a potassium nitrate | |
| 610 | 1 | |a гигроскопическая точка | |
| 610 | 1 | |a динамические методы | |
| 610 | 1 | |a гигроскопичность | |
| 610 | 1 | |a расплывание | |
| 700 | 1 | |a Tereshchenko |b A. G. |c Chemical Engineer |c Head of the laboratory of Tomsk Polytechnic University, Candidate of technical science |f 1946- |g Anatoly Georgievich |3 (RuTPU)RU\TPU\pers\31487 |9 15648 | |
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