Retention behavior of isomeric polycyclic aromatic sulfur heterocycles in gas chromatography on stationary phases of different selectivity
| Autor: | Leonard M. Sidisky, Stephen A. Wise, Stephanie G. Mössner, Milton L. Lee, Walter B. Wilson, Lane C. Sander, Jorge O. Oña-Ruales |
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| Rok vydání: | 2017 |
| Předmět: |
Chromatography
Gas Ionic Liquids chemistry.chemical_element Thiophenes 010501 environmental sciences Heterocyclic Compounds 4 or More Rings 01 natural sciences Biochemistry Article Analytical Chemistry chemistry.chemical_compound Isomerism Phase (matter) Dimethylpolysiloxanes 0105 earth and related environmental sciences Chromatography Liquid crystalline 010401 analytical chemistry Organic Chemistry General Medicine Sulfur 0104 chemical sciences Molecular Weight chemistry Ionic liquid Kovats retention index Gas chromatography Selectivity Heterocyclic Compounds 3-Ring |
| Zdroj: | Journal of Chromatography A. 1485:120-130 |
| ISSN: | 0021-9673 |
| DOI: | 10.1016/j.chroma.2017.01.024 |
| Popis: | Retention indices for 48 polycyclic aromatic sulfur heterocycles (PASHs) were determined using gas chromatography with three different stationary phases: a 50% phenyl phase, a 50% liquid crystalline dimethylpolysiloxane (LC-DMPS) phase, and an ionic liquid (IL) phase. Correlations between the retention behavior on the three stationary phases and PASH geometry (L/B and T, i.e., length-to-breadth ratio and thickness, respectively) were investigated for the following four isomer sets: (1) 4 three-ring molecular mass (MM) 184 Da PASHs, (2) 13 four-ring MM 234 Da PASHs, (3) 10 five-ring MM 258 Da PASHs, and (4) 20 five-ring MM 284 Da PASHs. Correlation coefficients for retention on the 50% LC-DMPS vs L/B ranged from r = 0.50 (MM 284 Da) to r = 0.77 (MM 234 Da). Correlation coefficients for retention on the IL phase vs L/B ranged from r = 0.31 (MM 234 Da) to r = 0.54 (MM 284 Da). Correlation coefficients for retention on the 50% phenyl vs L/B ranged from r = 0.14 (MM 258 Da) to r = 0.59 (MM 284 Da). Several correlation trends are discussed in detail for the retention behavior of PASH on the three stationary phases. |
| Databáze: | OpenAIRE |
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