Equivalence between the equilibrium dispersive and the transport model in describing band broadening in analytical gradient liquid chromatography

2014 ◽  
Vol 1369 ◽  
pp. 191-195 ◽  
Author(s):  
Weiqiang Hao ◽  
Bin Di ◽  
Bangyi Yue ◽  
Qiang Chen ◽  
Shun Wu ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Transport Model ◽  
Band Broadening ◽  
Gradient Liquid Chromatography

Study of the peak variance in isocratic and gradient liquid chromatography using the transport model

2013 ◽  
Vol 1295 ◽  
pp. 67-81 ◽  
Author(s):  
Weiqiang Hao ◽  
Bin Di ◽  
Qiang Chen ◽  
Junde Wang ◽  
Yongbin Yang ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Transport Model ◽  
Gradient Liquid Chromatography

Analytical Solutions of the Ideal Model for Gradient Liquid Chromatography

2006 ◽  
Vol 78 (22) ◽  
pp. 7828-7840 ◽  
Author(s):  
Weiqiang Hao ◽  
Xiangmin Zhang ◽  
Keyong Hou
Keyword(s):  
Liquid Chromatography ◽  
Analytical Solutions ◽  
Ideal Model ◽  
Gradient Liquid Chromatography ◽  
The Ideal

Gradient liquid chromatography/mass spectrometry using microbore columns and a moving belt interface

1984 ◽  
Vol 56 (8) ◽  
pp. 1229-1236 ◽  
Author(s):  
M. J. Hayes ◽  
H. E. Schwartz ◽  
Paul. Vouros ◽  
B. L. Karger ◽  
A. D. Thruston ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Microbore Columns ◽  
Gradient Liquid Chromatography

scholarly journals Separation of Poly(styrene-block-t-butyl methacrylate) Copolymers by Various Liquid Chromatography Techniques

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Tina Šmigovec Ljubič ◽  
David Pahovnik ◽  
Majda Žigon ◽  
Ema Žagar
Keyword(s):  
Liquid Chromatography ◽  
Block Copolymers ◽  
Molar Mass ◽  
Small Difference ◽  
Reversed Phase ◽  
Butyl Methacrylate ◽  
Critical Conditions ◽  
Chromatographic Techniques ◽  
Methacrylate Copolymers ◽  
Gradient Liquid Chromatography

The separation of a mixture of three poly(styrene-block-t-butyl methacrylate) copolymers (PS-b-PtBMA), consisting of polystyrene (PS) blocks of similar length andt-butyl methacrylate (PtBMA) blocks of different lengths, was performed using various chromatographic techniques, that is, a gradient liquid chromatography on reversed-phase (C18 and C8) and normal-phase columns, a liquid chromatography under critical conditions for polystyrene as well as a fully automated two-dimensional liquid chromatography that separates block copolymers by chemical composition in the first dimension and by molar mass in the second dimension. The results show that a partial separation of the mixture of PS-b-PtBMA copolymers can be achieved only by gradient liquid chromatography on reversed-phase columns. The coelution of the two block copolymers is ascribed to a much shorter PtBMA block length, compared to the PS block, as well as a small difference in the length of the PtBMA block in two of these copolymers, which was confirmed by SEC-MALS and NMR spectroscopy.

Slow analyte diffusion effects on the A-term band broadening in macromolecular liquid chromatography separations

2006 ◽  
Vol 557 (1-2) ◽  
pp. 11-18 ◽  
Author(s):  
J. Billen ◽  
P. Gzil ◽  
J. De Smet ◽  
N. Vervoort ◽  
G. Desmet
Keyword(s):  
Liquid Chromatography ◽  
Band Broadening ◽  
Diffusion Effects

Volume-load capacity in fast-gradient liquid chromatography

2001 ◽  
Vol 913 (1-2) ◽  
pp. 233-242 ◽  
Author(s):  
J. Layne ◽  
T. Farcas ◽  
I. Rustamov ◽  
F. Ahmed
Keyword(s):  
Liquid Chromatography ◽  
Load Capacity ◽  
Volume Load ◽  
Fast Gradient ◽  
Gradient Liquid Chromatography
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