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Chromatography High-performance liquid... Thin

Achiral (separation of diastereomeric derivatives) and chiral (sepa-ration of enantiomers) chromatography gas chromatography high-performance liquid chromatography super- and sub-critical fluid chromatography thin-layer chromatography... [Pg.159]

Moreover, it is possible to lead these compounds into the diastereomeric esters or amides using of optically active acid anhydrides. In this case, the diastereomers with a covalent bond need not always necessarily be a crystalline compound because there are still some other methods left to separate these diastereomers, such as thin layer chromatography, high-performance liquid chromatography, etc. [Pg.179]

In the present chapter, various tools such as thin-layer chromatography, high performance liquid chromatography, mass spectroscopy, and NMR used in analysis of flavonoids are discussed. In addition, the relevance and application of such tools in the analysis of flavanones, with emphasis on citrus flavanones, is discussed. [Pg.275]

Zschocke S., Liu, J.H., Stuppner, H. and Bauer, R. (1998) Comparative study of roots of Angelica sinensis and related umbelliferous drugs by thin layer chromatography, high-performance liquid chromatography and liquid chromatography-mass spectrometry. Phytochem Anal., 9,283-90. [Pg.257]

Cyclodextrins were used for the modification of such chromatographic techniques as gas chromatography, classical liquid chromatography, high performance liquid chromatography, thin layer chromatography and many hyphenated techniques. Since in the study of enantiomeric composition of monoterpenes gas chromatography modified with cyclodextrins is the main analytical tool, this method will be more widely discussed later on. [Pg.368]

A very large number of papers report new research works on analyses of organic acids by thin layer chromatography, paper chromatography, high-performance liquid chromatography, and other analytical techniques. One of the most popular and widely used separation techniques for qualitative and quantitative analyses in the laboratory is thin layer chromatography. [Pg.1085]

Prior to structural elucidation and possible eventual synthesis, the isolation of component phenolic lipids in a pure state is essential. The cold methods of thin layer chromatography (TLC), column chromatography (CC), flash chromatography, high performance liquid chromatography (HPLC) and hot methods (GC), often after derivatisation, are well established. Argentation versions of these separatory methods are less common but are desirable for the rapid separation of unsaturated constituents. [Pg.139]

As detection method in separation techniques, especially in thin-layer chromatography, high-performance liquid chromatography (HPLC) and electrophoresis. In HPLC applications for non-fluo-rescent compounds, either precolumn or postcolumn fluorescent derivatization is used. In capillary electrophoresis, the use of a laser to directly excite fluorescent compounds allows a extremely high sensitivity (femtomole to attomole levels of analytes can be detected in nanoliter volmnes). [Pg.1336]

PERFORMANCE THIN-LAYER CHROMATOGRAPHY-HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY... [Pg.175]

Pyrolysis gas chromatography/mass spectrometry (Py-GC/MS) Thin-layer chromatography High performance liquid ... [Pg.3326]

Alkaloids Thin-Layer Chromatography High Performance Liquid Chromatography 39, 43... [Pg.579]

The various experimental procedures that have been developed for its determination in different biological materials could be conveniently divided into bloassay or biological methods, chemical methods, radioactive tracer determinations, enzymatic techniques, paper, column, thin layer, gas chromatography, high performance liquid chromatography (HPLC) and automated methods (ref. Table 2.4 for references to these techniques and their grouping). The methods for determination of ascorhigen have also been listed separately in Table 2.4. A. [Pg.52]

Classic spot tests Microcrystallography Paper and thin-layer chromatography High-performance liquid chromatography (HPLC)... [Pg.15]

Some preliminary fractionation of lipid samples into simple lipid, glycolipid and phospholipid groups may then be desirable to facilitate their analysis or the isolation of single lipid classes on a small scale. The last objective can be accomplished by high-performance liquid, thin-layer or ion-exchange chromatography. [Pg.2]

Gagliardi, L. De Orsi, D. Del Giudice, M.R. Gatta, P. Porr, R. Chimenti, P. Tonelli, D. Development of a tandem thin-layer chromatography-high-performance liquid chromatography method for the identification and determination of corticosteroids in cosmetic products, AnaLChim-Acta, 2002, 457, 187-198. [Pg.19]

Methods are discussed utilising thin-layer chromatography, high performance liquid cliromatography and gas chromatography, used in conjunction with an infrared or ultraviolet spectroscopic or mass spectroscopic finish. [Pg.496]

Thin-layer chromatography Gas chromatography High-performance liquid chromatography Differential rates of migration of analytes through a stationary phase by movement of a liquid or gaseous mobile phase Qualitative analysis of mixtures Quantitative and qualitative determination of volatile compounds Quantitative and qualitative determination of nonvolatile compounds... [Pg.7]

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High-Performance Liquid, and Thin-Layer Chromatography

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