Rapid development of core–shell column technology: Accurate measurements of the intrinsic column efficiency of narrow-bore columns packed with 4.6 down to 1.3μm superficially porous particles

2014 ◽  
Vol 1333 ◽  
pp. 60-69 ◽  
Author(s):  
Fabrice Gritti ◽  
Georges Guiochon
Keyword(s):  
Rapid Development ◽  
Core Shell ◽  
Column Efficiency ◽  
Porous Particles ◽  
Column Technology ◽  
Superficially Porous Particles ◽  
Narrow Bore Columns

scholarly journals Wider Pore Superficially Porous Particles for Peptide Separations by HPLC

2010 ◽  
Vol 48 (7) ◽  
pp. 566-571 ◽  
Author(s):  
S. A. Schuster ◽  
B. M. Wagner ◽  
B. E. Boyes ◽  
J. J. Kirkland
Keyword(s):  
Porous Particles ◽  
Superficially Porous Particles ◽  
Peptide Separations

scholarly journals Temperature Effects on Retention and Separation of PAHs in Reversed-Phase Liquid Chromatography Using Columns Packed with Fully Porous and Core-Shell Particles

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Christophe Waterlot ◽  
Anaïs Goulas
Keyword(s):  
Limit Of Detection ◽  
Tap Water ◽  
Reversed Phase ◽  
Chromatographic Behavior ◽  
Core Shell ◽  
Reversed Phase Liquid Chromatography ◽  
Porous Particles ◽  
Phase Liquid ◽  
Effects Of Temperature ◽  
Shell Particles

Effects of temperature on the reversed-phase chromatographic behavior of PAHs were investigated on three columns. The first was the recent C18column (250 mm × 4.6 mm) packed with 5 µm core-shell particles while the others were more conventional C18columns (250 mm × 4.6 mm) packed with fully porous particles. Among the 16 PAHs studied, special attention has been paid to two pairs of PAHs, fluorene/acenaphthene and chrysene/benzo[a]anthracene, which often present coeluting problems. Due to the low surface area of the core-shell particles, lowest retention time of each PAH was highlighted and effects of the temperature on the separation of PAHs were negligible in regard to those using columns packed with fully porous particles. For each PAH studied, it was demonstrated that peaks were symmetrical and may be considered as Gaussian peaks when the column packed with core-shell particle was employed. In the best condition, the separation of PAHs was conducted at 16°C under very low pressure values (670–950 psi = 46–65 bars). Depending on PAHs, the limit of detection ranged from 0.88 to 9.16 μg L−1. Analysis of spiked acetonitrile samples with PAHs at 10 and 50 µg L−1and tap water at 10 µg L−1gave very good recoveries (94%–109.3%) and high precision (1.1%–3.5%).

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