A narrow open tubular column for high efficiency liquid chromatographic separation

The Analyst ◽  
2018 ◽  
Vol 143 (9) ◽  
pp. 2008-2011 ◽  
Author(s):  
Huang Chen ◽  
Yu Yang ◽  
Zhenzhen Qiao ◽  
Piliang Xiang ◽  
Jiangtao Ren ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Chromatographic Separation ◽  
High Efficiency ◽  
Open Tubular Column ◽  
Liquid Chromatographic Separation ◽  
Inner Diameter ◽  
Open Tubular Liquid Chromatography ◽  
Liquid Chromatographic

We report a great feature of open tubular liquid chromatography when it is run using an extremely narrow (e.g., 2 μm inner diameter) open tubular column: more than 10 million plates per meter can be achieved in less than 10 min and under an elution pressure of ca. 20 bar.

High-Efficiency Liquid Chromatographic Separation Utilizing Long Monolithic Silica Capillary Columns

2008 ◽  
Vol 80 (22) ◽  
pp. 8741-8750 ◽  
Author(s):  
Kosuke Miyamoto ◽  
Takeshi Hara ◽  
Hiroshi Kobayashi ◽  
Hironobu Morisaka ◽  
Daisuke Tokuda ◽  
...  
Keyword(s):  
Chromatographic Separation ◽  
High Efficiency ◽  
Capillary Columns ◽  
Monolithic Silica ◽  
Liquid Chromatographic Separation ◽  
Liquid Chromatographic ◽  
Silica Capillary

High-efficiency liquid chromatographic separation of vitamin D from precalciferol

1972 ◽  
Vol 74 (1) ◽  
pp. 43-49 ◽  
Author(s):  
G.J. Krol ◽  
C.A. Mannan ◽  
F.Q. Gemmill ◽  
G.E. Hicks ◽  
B.T. Kho
Keyword(s):  
Vitamin D ◽  
Chromatographic Separation ◽  
High Efficiency ◽  
Liquid Chromatographic Separation ◽  
Liquid Chromatographic

scholarly journals Use of Desirability Functions Associated with a Chemometric Method To Optimize Separation of a Compound Mixture by Liquid Chromatography

1997 ◽  
Vol 80 (2) ◽  
pp. 436-438 ◽  
Author(s):  
Yves Guillaume ◽  
Eric Peyrin ◽  
Christiane Guinchard
Keyword(s):  
Liquid Chromatography ◽  
Flow Rate ◽  
Chromatographic Separation ◽  
Desirability Function ◽  
Chemometric Method ◽  
Column Temperature ◽  
Desirability Functions ◽  
Efficient Separation ◽  
Liquid Chromatographic Separation ◽  
Liquid Chromatographic

Abstract A chemometric method using a desirability function was used to optimize the liquid chromatographic separation of 10 benzodiazepines in a minimum analysis time. Most efficient separation was achieved with acetonitrile–water (60 + 40) at a flow rate of 1 mL/min and a column temperature of 47°C.

Liquid Chromatographic Separation of Some Alkylaminocyclohexanecarbonitriles from Phenylcyclohexylamines Related to Phencyclidine

1981 ◽  
Vol 64 (6) ◽  
pp. 1431-1434
Author(s):  
George M Wall ◽  
C Randall Clark
Keyword(s):  
Liquid Chromatography ◽  
Chromatographic Separation ◽  
Solvent System ◽  
Reverse Phase ◽  
Reverse Phase Liquid Chromatography ◽  
Water Solvent ◽  
Liquid Chromatographic Separation ◽  
Phase Liquid ◽  
Liquid Chromatographic

Abstract The synthesis of five 1-aminocyclohexanecarboni-Iriles and the corresponding 1-phenylcyclohexylamines related to phencyclidine is reported. The compounds are separated by reverse phase liquid chromatography in an acidic methanol-water solvent system.

Determination of Formaldehyde and Other Aldehydes in Industrial Surfactants hy Liquid Chromatographic Separation of Their Respective 2,4-Dinitrophenylhydrazone Derivatives

1988 ◽  
Vol 71 (3) ◽  
pp. 560-563 ◽  
Author(s):  
James R Dahlgran ◽  
Melvin N Jameson
Keyword(s):  
Liquid Chromatography ◽  
Chromatographic Separation ◽  
Direct Injection ◽  
Detection Limits ◽  
Polymeric Materials ◽  
Liquid Chromatograph ◽  
Simple Method ◽  
Liquid Chromatographic Separation ◽  
Liquid Chromatographic

Abstract A rapid and simple method for the determination of formaldehyde, acetaldehyde, and propionaldehyde in surfactants by derivatization with 2,4-dinitrophenylhydrazine (DNPH) has been developed. Samples are prepared in small vials containing a solution of DNPH and acetonitrile. This procedure allows direct injection of an aliquot of the sample into a liquid chromatograph (LC) for analysis. Separation and quantitation of the derivatives can be performed using reversephase liquid chromatography. Detection limits for formaldehyde, acetaldehyde, and propionaldehyde are 0.1, 0.1, and 0.5 pg/g, respectively, for a 1 g sample of the surfactant. The technique has been applied to other ethoxylated and propoxylated polymeric materials with equal success

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