A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents
The net retention volumes relative to zero adsorbate coverage of adsorbent at 273.2 K, i.e. V 0 S(273) , have been determined on two active carbons with well-developed micropore structures. Kováts retention indices have been calculated on the basis of these net retention volumes using two methods. T...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publications
1999-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749901700101 |
| _version_ | 1797281457695096832 |
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| author | H. Grajek Z. Witkiewicz H. Jankowska A. Światkowski |
| author_facet | H. Grajek Z. Witkiewicz H. Jankowska A. Światkowski |
| author_sort | H. Grajek |
| collection | DOAJ |
| description | The net retention volumes relative to zero adsorbate coverage of adsorbent at 273.2 K, i.e. V 0 S(273) , have been determined on two active carbons with well-developed micropore structures. Kováts retention indices have been calculated on the basis of these net retention volumes using two methods. The first involved the substitution of the net retention volumes in the Kováts equation. The second method, which is a new method, involved a description of the net retention volumes by the function log V 0 S(273) = f(T c ), where T c is the column temperature, followed by the calculation of the average values for the net retention volumes using the best-fit curve. Kováts retention indices were then calculated from the average values of the net retention volumes. A comparison of the results obtained indicates that the new method appears to yield better values. The Kováts retention indices obtained via both methods were also calculated using a quadratic equation. |
| first_indexed | 2024-03-07T16:57:57Z |
| format | Article |
| id | doaj.art-4337268f9f954c6b915bb0bc9073dbf4 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T16:57:57Z |
| publishDate | 1999-01-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-4337268f9f954c6b915bb0bc9073dbf42024-03-03T03:40:33ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40381999-01-011710.1177/026361749901700101A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon AdsorbentsH. GrajekZ. WitkiewiczH. JankowskaA. ŚwiatkowskiThe net retention volumes relative to zero adsorbate coverage of adsorbent at 273.2 K, i.e. V 0 S(273) , have been determined on two active carbons with well-developed micropore structures. Kováts retention indices have been calculated on the basis of these net retention volumes using two methods. The first involved the substitution of the net retention volumes in the Kováts equation. The second method, which is a new method, involved a description of the net retention volumes by the function log V 0 S(273) = f(T c ), where T c is the column temperature, followed by the calculation of the average values for the net retention volumes using the best-fit curve. Kováts retention indices were then calculated from the average values of the net retention volumes. A comparison of the results obtained indicates that the new method appears to yield better values. The Kováts retention indices obtained via both methods were also calculated using a quadratic equation.https://doi.org/10.1177/026361749901700101 |
| spellingShingle | H. Grajek Z. Witkiewicz H. Jankowska A. Światkowski A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents Adsorption Science & Technology |
| title | A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents |
| title_full | A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents |
| title_fullStr | A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents |
| title_full_unstemmed | A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents |
| title_short | A New Method of Calculating Kováts Retention Indices for Substances Chromatographed on Carbon Adsorbents |
| title_sort | new method of calculating kovats retention indices for substances chromatographed on carbon adsorbents |
| url | https://doi.org/10.1177/026361749901700101 |
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