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As peak height is related with carrier-gas rate, wide peaks eluted later will be much sharper. This allows a better identification of low concentrations (increase in analysis accuracy);
Attainment of symmetrical peaks also in case of nonlinear adsorption isotherm, as rear of band is at a higher pressure than front;
The substantial enrichment, increase in concentration of component in center of band is conditioned by compression of band both as a consequence of moving pressure gradient compared with initial sorption pressure, and as a consequence of presence of moving gradient of optimal linear speed accompanying band of components being analyzed from inlet to outlet of chromatographic column during while analysis cycle (increase in efficiency of separation of components);
The pressure of gas in column can be changed almost instantaneously and equilibrium can be attained in a very short time. Pressure re-regulation excludes necessity of long "periods of cooling" of column (express - analysis, economy of electricity), while temperature increase programming may either cause evaporation of stationary phase, which "flies out" of column, or destroy it chemically to various molecules, which also will soon come out by carrier-gas. The repetitive cycles of heating and cooling may cause compression of solid support particles during expansion, followed by destruction (crumbling) during compression, which leads to a progressive change of permeability. The maximum possible effectivity of chromatographic column - Hayrapetyan's Effect
The maximum possible effectivity of chromatographic column - Hayrapetyan's E ff e c t
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ARAM HAYRAPETYAN 47/6 Vardanants Street, Vanadzor 377201, Republic of Armenia, E-mail: email@example.com Web-site: HTTP://CHROMATOGRAPHY.HOTBOX.RU PUBLICATIONS AND ARTICLES: 57 published works, including 21 certificates for individual authorship from USSR and Russia, Germany, Czechoslovakia and Bulgaria. PERSONAL DATES: Born 17 May 1945, married, two children. Daughter born 1972, married. Son born 1977.