Determination of octanol-water partition coefficients of polar polycyclic aromatic compounds (N-PAC) by high performance liquid chromatography
| Autor: | Christian Helweg, Torben Nielsen, Poul Erik Hansen |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
chemistry.chemical_classification
Octanol Environmental Engineering Chromatography Hydrogen bond Chemistry Health Toxicology and Mutagenesis Diol Public Health Environmental and Occupational Health General Medicine General Chemistry Primary alcohol Pollution High-performance liquid chromatography Partition coefficient chemistry.chemical_compound Hydrocarbon Column chromatography Environmental Chemistry |
| Zdroj: | Roskilde University |
| ISSN: | 0045-6535 |
| Popis: | Prediction of 1-octanol water partition coefficients for a range of polar N-PAC from HPLC capacity coefficients has been investigated. Two commercially available columns, an ODS column and a Diol column were tested with water-methanol eluents. The best prediction of log K ow for N-PAC was achieved using a Diol column with an eluent of 35% MeOH and 65% water. The results indicate that the Diol column, in reversed phase mode, is able to form hydrogen bonds with a solute. Different LFERs between retention and log K ow was found for polar and nonpolar compounds. In general log K ow increased with size and log K ow for N-PAC was 1.1-1.3 lower than log K ow for the equivalent PAH. Shielding of the nitrogen atom in the N-PAC compounds caused an increase in log K ow . |
| Databáze: | OpenAIRE |
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