Inordinate 发表于 2025-3-23 12:05:02
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Recruitment Learning – An Introductions principally by electrostatic forces. The newer technique of gel chromatography (gel filtration), where the stationary phase is a porous gel and the separation is according to molecular size, is included in this chapter because the methods used are commonly those of conventional column chromatography.百科全书 发表于 2025-3-23 18:58:47
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eness. The original method was described in 1903 by Tswett, who used it for the separation of coloured substances, and the name chromatog raphy stems from this. However, the limitation to coloured compounds never really obtained, and most chromatographic separations are nowadays performed on mixtur不妥协 发表于 2025-3-24 11:14:58
Paper Chromatography; Zone Electrophoresis,sed to support the stationary phase is cellulose powder (p. 38). Consden, Gordon and Martin in 1944 separated the amino-acids and peptides in wool protein hydrolysates by a method in which the powder column was replaced by a sheet or strip of paper, freely suspended in a vapour-tight vessel.预示 发表于 2025-3-24 16:24:17
Thin-layer Chromatography,d as a binder. The strips were handled in the same way that paper is handled in paper chromatography, and indeed the original object of the thin-layer technique was to apply the methods of paper partition chromatography to an adsorption system.招募 发表于 2025-3-24 21:32:54
Book 1974 original method was described in 1903 by Tswett, who used it for the separation of coloured substances, and the name chromatog raphy stems from this. However, the limitation to coloured compounds never really obtained, and most chromatographic separations are nowadays performed on mixtures of colo联邦 发表于 2025-3-25 01:25:56
Recruitment Learning – An Introductionsed to support the stationary phase is cellulose powder (p. 38). Consden, Gordon and Martin in 1944 separated the amino-acids and peptides in wool protein hydrolysates by a method in which the powder column was replaced by a sheet or strip of paper, freely suspended in a vapour-tight vessel.