Chromatography, general

The application of pressure to the liquid phase in liquid chromatography generally increases the separation (see HPLC). Also in PIC improved efficiency of the column is observed if pressure is applied to the mobile phase (Wittmer, Nuessle and Haney Anal Chem 47 1422 1975). 

Chromatography General term for a number of methods used to separate the individual components of a mixture. 

Toluene in air (charcoal diffusive samplers, solvent desorption and gas chromatography). General methods for sampling airborne gases and vapours. 

Urh M, Simpson D, Zhao K. Affinity chromatography general methods. Methods in Enz)nnology 2009 463 417-438. 

The application of pressure to the liquid phase in liquid chromatography generally increases the separation (see... 

VI.18 SEPARATIONS BY PAPER AND THIN LAYER CHROMATOGRAPHY. GENERAL INTRODUCTION Separations of certain cations (including some of the rarer elements, discussed in Chapter VII) and anions can be carried out effectively by either paper or thin layer chromatography or both. 

Ostrove, S. (1990) Affinity chromatography General methods. Methods Enzymol. 182, 357-371. 

Thin-layer chromatography generally uses the latter one as a consequence of the high scattering effect of the materials generally used in TLC stationary phases. At the same time, the intrinsic absorbance of the medium should be spectrally flat. 

The stationary and mobile phases used in thin-layer chromatography are the same as those used in liquid chromatography generally. Thus adsorbent solids, ion-... 

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