Effect of the Nature of the Carrier Gas on the Retention Characteristics of Sorbates
| Autor: | V. E. Shiryaeva, A. A. Kurganov, A. A. Korolev, Popova Tamara P, A. Yu. Kanat’eva |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Analytical chemistry Extrapolation chemistry.chemical_element Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Phase (matter) Phase ratio Polar Physical and Theoretical Chemistry Methylene 0210 nano-technology Carbon Energy (signal processing) |
| Zdroj: | Russian Journal of Physical Chemistry A. 94:631-637 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024420030280 |
| Popis: | The possibility is verified of estimating the phase ratio of a chromatographic column chromatographically from the semi-empirical dependence of the retention time of homologs on the number of carbon atoms in their structure. The effect the nature and pressure of the carrier gas has on the phase ratio is considered. It is shown that the average value is 1190 ± 100 for the polar phase and 380 ± 50 for the non-polar phase, regardless of the nature of the carrier gas. An exception is СО2, where phase ratio β drops strongly after adjusting the initial data. At the same time, it is clear that the values of the phase ratio determined chromatographically differ strongly from those claimed by the manufacturers of columns, while system dead time tМ and energy $$\Delta {{G}_{{{\text{C}}{{{\text{H}}}_{{\text{2}}}}}}}$$ of the methylene unit sorption of a homological series can be reliably determined via extrapolation. |
| Databáze: | OpenAIRE |
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