Properties of acid-washed and silanized czechoslovak supports: chromaton n and chezasorb

Gas chromatography

“…Biernachi (102) deactivated Chromosorb P and W with the sodium salt of 3-aminobenzene-1-sulfonate for the separation of aliphatic amines. The adsorptive and catalytic properties of several Czechoslovak supports were studied and compared with the Chromosorb P and W supports (967). The efficiencies of various supports for GC and LC were compared by the reduced plate height and reduced mobile phase velocity in order to observe the change in the column capacity ratio with the particle size (646).…”

“…A comparison of the results of Hg-porosimetry, electron microscopy, and GC studies of six supports proved Chromosorb W to have the best physical properties (14®)• A new kind of diatomite solid support has been characterized after various hydrothermic, heating, and chemical treatments (143). Various washing, heat treatment, and silanization methods have reduced the adsorptive and catalytic properties of the diatomaceous supports (961, 967,998). Elderberry cellulose, Juncus glaucus cellulose, and pink and white diatomites were evaluated as column packings and then chemically modified by methylation, nitration, trifluoroacetylation, and cycanoethylation to study the polarity effects (739).…”