A complete separation of lipids by three-directional thin layer chromatography

Lipids ◽  
1983 ◽  
Vol 18 (12) ◽  
pp. 896-899 ◽  
Author(s):  
J. K. G. Kramer ◽  
R. C. Fouchard ◽  
E. R. Farnworth
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Complete Separation ◽  
Layer Chromatography

PAPER AND THIN-LAYER CHROMATOGRAPHY OF THE HYDROXYSKATOLES

1963 ◽  
Vol 41 (1) ◽  
pp. 487-496 ◽  
Author(s):  
R. A. Heacock ◽  
M. E. Mahon
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Polar Solvent ◽  
Complete Separation ◽  
Solvent Systems ◽  
Layer Chromatography

The hydroxyskatoles could not be effectively separated chromatographically with a number of solvent systems on Whatman No. 1 paper or acetylated paper. The use of formamide-treated paper and certain non-polar solvent systems enabled the 4- and 7-hydroxyskatoles to be separated from each other, and in turn from mixtures of the 5- and 6-hydroxyskatoles. This latter pair of isomers could not be separated by this method. Complete separation of all four isomers was readily achieved using thin-layer techniques.

DIE FLUOROMETRISCHE BESTIMMUNG VON TESTOSTERON, EPITESTOSTERON UND ANDROST-4-EN-3,17-DION NACH DÜNNSCHICHTCHROMATOGRAPHISCHER ISOLIERUNG AUS DEM HARN

1968 ◽  
Vol 58 (3) ◽  
pp. 353-363 ◽  
Author(s):  
W. Hubl ◽  
K. Schollberg
Keyword(s):  
Enzymatic Hydrolysis ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Complete Separation ◽  
The Other ◽  
Simple Method ◽  
Layer Chromatography

ABSTRACT The authors describe a simple method for determining testosterone, epitestosterone and androstenedione. The method employs enzymatic hydrolysis for glucuronide conjugates, Girard-partition, thin-layer chromatography using alumina and polyamide and fluorometric quantitation of the eluted steroids. By means of TLC on polyamide it is possible to separate (testosterone + epitestosterone) from the other C19-steroids. The complete separation of testosterone from epitestosterone is obtained by TLC on alumina as well as on silicagel G.

Determination of Functionality Distributions in Telechelic Prepolymers by Thin-Layer Chromatography

1977 ◽  
Vol 50 (1) ◽  
pp. 63-70 ◽  
Author(s):  
T. I. Min ◽  
T. Miyamoto ◽  
H. Inagaki
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Complete Separation ◽  
Hydroxyl Groups ◽  
Simple Method ◽  
Flame Ionisation Detector ◽  
Layer Chromatography ◽  
Flame Ionisation ◽  
Ionisation Detector

Abstract Functionality distributions of telechelic prepolymers have been determined by thin layer chromatography (TLC). Commercially available 1,2-polybutadienes having either carboxyl or hydroxyl groups were examined. TLC with p-xylene as the developer made it possible to separate the sample into a nonfunctional component and a mixture of mono- and difunctional components. Complete separation of the sample into the three components was achieved by selecting the developer and development procedure appropriately. Quantification of the chromatograms was performed successfully in a TLC apparatus equipped with a flame ionisation detector. A simple method for the determination of the functionality distribution was proposed.

Collaborative Study of a Method for Multiple Chlorinated Pesticide Residues in Nonfatty Vegetables

1966 ◽  
Vol 49 (2) ◽  
pp. 460-463
Author(s):  
Richard T Krause
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Electron Capture ◽  
Pesticide Residues ◽  
Collaborative Study ◽  
Complete Separation ◽  
Layer Chromatography

Abstract Five laboratories measured aldrin, DDE, and methoxychlor residues in potatoes by electron capture and thin layer chromatography. Average recoveries obtained with the GLC method were 93–103% for the three added pesticides. Each of the five laboratories identified each pesticide correctly and reported reasonable estimates for DDE and methoxychlor by the TLC method. Only one laboratory reported estimates for aldrin by the TLC method. Four laboratories did not achieve complete separation by TLC due to the masking of aldrin by the high levels of DDE.

PAPER AND THIN-LAYER CHROMATOGRAPHY OF THE HYDROXYSKATOLES

1963 ◽  
Vol 41 (2) ◽  
pp. 487-496 ◽  
Author(s):  
R. A. Heacock ◽  
M. E. Mahon
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Polar Solvent ◽  
Complete Separation ◽  
Solvent Systems ◽  
Layer Chromatography

The hydroxyskatoles could not be effectively separated chromatographically with a number of solvent systems on Whatman No. 1 paper or acetylated paper. The use of formamide-treated paper and certain non-polar solvent systems enabled the 4- and 7-hydroxyskatoles to be separated from each other, and in turn from mixtures of the 5- and 6-hydroxyskatoles. This latter pair of isomers could not be separated by this method. Complete separation of all four isomers was readily achieved using thin-layer techniques.

Thin-Layer Chromatography

1965 ◽  
Author(s):  
H. R. Bolliger ◽  
M. Brenner ◽  
H. Gänshirt ◽  
Helmut K. Mangold ◽  
H. Seiler ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Layer Chromatography
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