Mobile phase, chromatography

Liquid Chromatography Mobile Phases Applicable to Mass Spectrometry. 161... [Pg.149]

Completion of the reaction (Table I) is indicated by monitoring the reaction using IR spectroscopy or thin-layer chromatography (mobile phase hexane-toluene, 1 1). The mixture is cooled to room temperature, filtered... [Pg.249]

Figure 6.8 Chromatogram of seven anions using on-chip ion chromatography, mobile phase 1.7 mM sodium bicarbonate and 1.8 mM sodium carbonate with conductivity detection [51].

Chromatography Mobile phase Gas Stationary phase Liquid Configuration Column... [Pg.650]

FIGURE 17-2. Gradient chromatography. Mobile phase H2O to MeOH gradient. Flow rate 2 mL/min. Detector UV at 254 nm, 0.1 AUFS. Sample Blank. Recorder 0.2 in./min. Column Bondapak Cig/Porasil B, 2 mm ID x 60 cm. (Note Actual separation will depend upon the quality of the mobile phase and column packing.)... [Pg.442]

Figure 5-9. Chromatograms of isomers 3-6. Chromatographic conditions Colnmn APEX silica, 250 x 4.6 mm, 5 pm (Jones chromatography) mobile phase, hexane-dichloromethane-2-propanol. (a) 82 10 8 (v/v/v), (b) 84 10 6 (v/v/v) flow rate, 1 mL/min detection, 280 nm temperatnre, ambient. (Reprinted from reference 42, with permission.)...

Typical thin-layer separations are performed on a glass plate that is coated with a thin and adherent layer of finely divided particles this layer constitutes the stationary phase. The particles are similar to those described in the discussion of adsorption, normal- and reversed-phase partition, ion-exchange, and size-exclusion column chromatography. Mobile phases are also similar to those employed in high-performance liquid chromatography. [Pg.1001]

WH Schaefer, F Dixon Jr. Effect of high-performance liquid chromatography mobile phase components on sensitivity in negative atmospheric pressure chemical ionization liquid chromatography-mass spectrometry. J Am Soc Mass Spectrom 7 1059—1069,1996. [Pg.168]

Schaefer, W.H. Dixon, F. Jr. Effect of High-Performance Liquid Chromatography Mobile Phase Components on Sensitivity in Negative Atmospheric Pressure Chemical Ionization Liquid Chromatography-Mass Spectrometry, J. Am. Soc. Mass Spectrom. 7, 1059-1069 (1996). [Pg.348]

In liquid chromatography mobile phase viscosities are some 100 times greater than those in gas chromatography. Thus pressure drops in liquid chromatography... [Pg.136]

Names such as gel filtration chromatography (mobile phase is water), used by biochemists, and gel permeation chromatography (mobile phase is an organic solvent), used by polymer chemists, describe this technique. Size exclusion chromatography, however, is the recommended term. Molecular weight distribution of polymers can be obtained by this technique, and proteins, enzymes, peptides, nucleic acids, hormones, polysaccharides, and so on can be separated. [Pg.621]

Column chromatography mobile phase flows through a column containing the stationary phase material, either as a particulate packing or as a film on the inner wall (WCOT) of the column tubing. [Pg.527]

Liquid chromatography mobile phase is a liquid (liquid-liquid chromatography (LLC), liquid-solid chromatography (LSC)). [Pg.3]

Gas chromatography mobile phase is a gas (gas-solid chromatography (GSC), gas-liquid chromatography (GLC)). [Pg.3]

Zhao JJ, Yang AY, Rogers JD. Elfects of liquid chromatography mobile phase buffer contents on the ionization and fragmentation of analytes in liquid chromatography-ionspray tandem mass spectrometric determination. J Mass Spectrom. 2002 37 421-33. [Pg.254]

Type of Chromatography Mobile Phase Stationary Phase... [Pg.292]

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