A perspective on enantioselective chromatography by comparing ultra-high performance supercritical fluid chromatography and normal-phase liquid chromatography through the use of a Pirkle-type stationary phase

Author(s):  
Giulia Mazzoccanti ◽  
Simone Manetto ◽  
Alessia Ciogli ◽  
Claudio Villani ◽  
Francesco Gasparrini
Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2425 ◽  
Author(s):  
Tsunehisa Hirose ◽  
Daniel Keck ◽  
Yoshihiro Izumi ◽  
Takeshi Bamba

The retention behavior of a wide variety of stationary phases was compared in supercritical fluid chromatography (SFC) and normal-phase high-performance liquid chromatography (NP-HPLC). We also attempted to elucidate the retention behavior in SFC by investigating the selectivity of the different stationary phases. SFC separation conditions with polar stationary phases, such as silica gel (SL) and diol (Diol) phases, operate via adsorptions that include hydrophilic and ionic interactions similar to those in NP-HPLC. Moreover, non-polar stationary phases, such as pentabromophenyl (PBr), pyrenylethyl (PYE), and octadecyl (C18), could be used despite the non-polar mobile phase conditions, because the dispersion and π-π interactions were stronger in SFC than in HPLC. These results reflect the selectivity of the stationary phase and its retention factor, thus providing useful information for the selection of appropriate stationary phases for particular analytes.


2017 ◽  
Vol 80 (4) ◽  
pp. 547-557 ◽  
Author(s):  
Natalie Kolderová ◽  
Tomáš Neveselý ◽  
Jiří Šturala ◽  
Martin Kuchař ◽  
Roman Holakovský ◽  
...  

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