Wilson Walter B, Sander Lane C, Oña-Ruales Jorge O, Mössner Stephanie G, Sidisky Leonard M, Lee Milton L, Wise Stephen A
Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.
Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.
J Chromatogr A. 2017 Feb 17;1485:120-130. doi: 10.1016/j.chroma.2017.01.024. Epub 2017 Jan 10.
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.
使用气相色谱法，采用三种不同的固定相：50%苯基固定相、50%液晶二甲基聚硅氧烷（LC-DMPS）固定相和离子液体（IL）固定相，测定了48种多环芳族硫杂环化合物（PASHs）的保留指数。针对以下四组异构体，研究了PASH在三种固定相上的保留行为与PASH几何形状（L/B和T，分别为长宽比和厚度）之间的相关性：（1）4种三环分子量（MM）184Da的PASHs，（2）13种四环MM 234Da的PASHs，（3）10种五环MM 258Da的PASHs，以及（4）20种五环MM 284Da的PASHs。在50% LC-DMPS上的保留与L/B之间的相关系数范围为r = 0.50（MM 284Da）至r = 0.77（MM 234Da）。在IL固定相上的保留与L/B之间的相关系数范围为r = 0.31（MM 234Da）至r = 0.54（MM 284Da）。在50%苯基固定相上的保留与L/B之间的相关系数范围为r = 0.14（MM 258Da）至r = 0.59（MM 284Da）。详细讨论了PASH在三种固定相上保留行为的几种相关趋势。
