Results 291 to 300 of about 154,145 (346)

Quantitative high-performance thin-layer chromatography of nucleosides

Russian Journal of Applied Chemistry, 2010
A procedure was developed for express analysis of thymidine by high-performance thin-layer chromatography in the cultural liquid in the course of microbiological synthesis.
I. I. Malakhova, B. V. Tyaglov, A. S. Mironov, V. D. Krasikov   +3 more
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Anticircular high performance thin‐layer chromatography

Journal of High Resolution Chromatography, 1978
AbstractThe principal analytical details for the third of three possible modes in high performance thin‐layer chromatography are given, namely the anticircular mode. Separation is achieved by allowing the mobile phase to enter the plate layer on a precise outer circle line, from where it flows towards the centre with nearly constant speed.
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Stationary phases for high-performance thin-layer chromatography

Journal of Chromatography A, 1980
Abstract The characteristics of commercially available high-performance thin-layer chromatographic quality thin-layer plates pre-coated with silica gel, cellulose, chemically bonded phases or polyamide are discussed and compared with those of pre-coated layers used in conventional thin-layer chromatography.
U.A. Th. Brinkman, G. de Vries, R. Cuperus   +2 more
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Quantitation in high-performance micro-thin-layer chromatography

Journal of Chromatography A, 1975
Abstract Silica gel 60 F254 pre-coated plates for nanogram-scale thin-layer chromatography were developed for high-performance thin-layer chromatography (HPTLC) on the basis of silica gel of pore size 60 A. Under the usual chromatographic conditions, it was possible to achieve a plate height of 12 μm.
J. Ripphahn, H. Halpaap
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Introduction to High-Performance Thin Layer Chromatography (HPTLC)

2023
This chapter discusses chromatography, classification of chromatography, thin layer chromatography (TLC) and how high-performance thin-layer chromatography (HPTLC) is an advanced version of TLC. In brief, this chapter also discusses the advantages and the areas where the HPTLC technique can be used.
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Determination of cortisol in guinea pig urine by high performance thin-layer chromatography, high performance liquid chromatography, and thin-layer chromatography/radioimmunoassay

Chromatographia, 1997
In order to collect urinary samples from unrestrained guinea pigs, animals were kept in their familiar home cages with wood shavings for bedding. Cortisol was removed from shavings by a simple washing step, and an attempt was made to measure its concentrations by high performance thin-layer chromatography (HPTLC), high performance liquid chromatography
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Rapid microanalysis of anticonvulsants by high-performance thin-layer chromatography

Journal of Chromatography B: Biomedical Sciences and Applications, 1981
A rapid microanalytical method is described for phenobarbital, phenytoin, primidone and carbamazepine utilizing high-performance thin-layer chromatography (HPTLC). This procedure incorporates a single extraction of a 50-microliter plasma sample.
C M, Davis, D C, Fenimore
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High-performance thin-layer chromatography method for inositol phosphate analysis

Journal of Chromatography B: Biomedical Sciences and Applications, 1999
A simple and inexpensive high-performance thin-layer chromatography (HPTLC) method for the analysis of inositol mono- to hexakisphosphates on cellulose precoated plates is described. Plates were developed in 1-propanol-25% ammonia solution-water (5:4:1) and substance quantities as low as 100-200 pmol were detected by molybdate staining. Chromatographic
F, Hatzack, S K, Rasmussen
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High-performance thin-layer chromatography and high-performance thin-layer chromatography–mass spectrometry methods for the analysis of phenolic acids

JPC - Journal of Planar Chromatography - Modern TLC, 2018
High-performance thin-layer chromatography (HPTLC) and HPTLC–mass spectrometry (MS)/(MSn) methods for analyses of phenolic acids (chlorogenic acid, rosmarinic acid, protocatechuic acid, gallic acid, syringic acid, ellagic acid, trans-cinnamic acid, o-coumaric acid, m-coumaric acid, p-coumaric acid, caffeic acid, ferulic acid, sinapic acid) were ...
Urška Jug, Vesna Glavnik, Eva Kranjc, Irena Vovk   +3 more
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Coupling High-Performance Thin-Layer Chromatography with Bacterial Genotoxicity Bioreporters

Environmental Science & Technology, 2019
We present an innovative technological platform for monitoring the direct genotoxicity of individual components in complex environmental samples, based on bioluminescent Escherichia coli genotoxicity bioreporters, sprayed onto the surface of a high-performance thin-layer chromatography (HPTLC) plate. These sensor strains harbor plasmid-borne fusions of
Dror Shakibai, Carolin Riegraf, Liat Moscovici, Georg Reifferscheid, Sebastian Buchinger, Shimshon Belkin   +5 more
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