Separation performance of a new triptycene-based stationary phase with polyethylene glycol units and its application to analysis of the essential oil of Osmanthus fragrans Lour
In: Journal of Chromatography A, Jg. 1618 (2020-05-01), S. 460928-460928
Online
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Zugriff:
This work presents a new triptycene-based stationary phase (TP-PEG) combining the three-dimensional (3D) triptycene (TP) framework with polyethylene glycol (PEG) moieties for gas chromatographic (GC) separations. Its statically coated capillary column showed high column efficiency of 5263 plates/m determined by naphthalene at 120 °C. Its Rohrschneider-McReynolds constants and Abraham solvation system constants were measured to characterize its polarity and molecular interactions with analytes of different types. As evidenced, the TP-PEG column showed high-resolution performance for the isomers of anilines, phenols, halobenzenes and alkanes with distinct advantages over the PEG columns, particularly those critical isomers such as 3,5-/2,3-xylidine (R = 2.94), m-/p-chlorotoluene (R = 1.92), p-/m-cresol (R = 1.89), 2,2-dimethylbutane/2-methylpentane (R = 1.51), 2,2,3-trimethylbutane /2,3-dimethyl pentane (R = 1.74) and 2,3-dimethylpentane/n-heptane (R = 1.92). In addition, it exhibited good column repeatability and reproducibility with the relative standard deviation (RSD) values of 0.02%–0.09% for run-to-run, 0.13%–0.22% for day-to-day and 2.7%–4.1% for column-to-column, respectively, and a wide operational temperature range (30 °C–280 °C) . Its application to GC–MS analysis of the essential oil of Osmanthus fragrans has proven its good potential for practical analysis of complex samples.
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Separation performance of a new triptycene-based stationary phase with polyethylene glycol units and its application to analysis of the essential oil of Osmanthus fragrans Lour
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Autor/in / Beteiligte Person: | Qi, Meiling ; He, Yongrui |
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Zeitschrift: | Journal of Chromatography A, Jg. 1618 (2020-05-01), S. 460928-460928 |
Veröffentlichung: | Elsevier BV, 2020 |
Medientyp: | unknown |
ISSN: | 0021-9673 (print) |
DOI: | 10.1016/j.chroma.2020.460928 |
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