title: Retention behavior of isomeric polycyclic aromatic sulfur heterocycles in gas chromatography on stationary phases of different selectivity.
abstract: 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) 184Da PASHs, (2) 13 four-ring MM 234Da PASHs, (3) 10 five-ring MM 258Da PASHs, and (4) 20 five-ring MM 284Da PASHs. Correlation coefficients for retention on the 50% LC-DMPS vs L/B ranged from r=0.50 (MM 284Da) to r=0.77 (MM 234Da). Correlation coefficients for retention on the IL phase vs L/B ranged from r=0.31 (MM 234Da) to r=0.54 (MM 284Da). Correlation coefficients for retention on the 50% phenyl vs L/B ranged from r=0.14 (MM 258Da) to r=0.59 (MM 284Da). Several correlation trends are discussed in detail for the retention behavior of PASH on the three stationary phases.
authors.affiliation: Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States. Electronic address: walter.wilson@nist.gov.
authors.forename: Walter B
authors.initials: WB
authors.lastname: Wilson
authors.affiliation: Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.
authors.forename: Lane C
authors.initials: LC
authors.lastname: Sander
authors.affiliation: Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.
authors.forename: Jorge O
authors.initials: JO
authors.lastname: Oña-Ruales
authors.affiliation: Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.
authors.forename: Stephanie G
authors.initials: SG
authors.lastname: Mössner
authors.affiliation: MilliporeSigma, A business of Merck KGaA, Bellefonte, PA 16823, United States.
authors.forename: Leonard M
authors.initials: LM
authors.lastname: Sidisky
authors.affiliation: Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, United States.
authors.forename: Milton L
authors.initials: ML
authors.lastname: Lee
authors.affiliation: Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Wise
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D004129:Dimethylpolysiloxanes; D006575:Heterocyclic Compounds, 3-Ring / Q000737:chemistry*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry*; D052578:Ionic Liquids; D007536:Isomerism; D008970:Molecular Weight; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D004129:Dimethylpolysiloxanes; D006575:Heterocyclic Compounds, 3-Ring; D006576:Heterocyclic Compounds, 4 or More Rings; D052578:Ionic Liquids; D013876:Thiophenes; C501844:dimethicone