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纸上层析纸上层析是色层分析(亦称“色谱分析”)中的一种。色谱法按其分离的原理,可分为吸附色谱法,分配色谱法,离子交换色谱,法排组色谱法等。纸上层析基本上属于分配色谱法。它是以溶有试样的溶剂(如水)点样于惰性支持物(滤纸)上作为固定液相;用另一种互不相溶(或部分互溶)的溶剂(也叫展开剂)作为流动相。当展开剂在纸的毛细管作用下,从纸的一端逐渐扩散到另一端时,点样中
Chromatography on paper chromatography paper is one of chromatographic analysis (also known as “chromatography”). According to the principle of separation, chromatography can be divided into adsorption chromatography, partition chromatography, ion exchange chromatography, and chromatography. Paper chromatography basically belongs to distribution chromatography. It is used as a fixed liquid phase by spotting an inert support (filter paper) with a solvent (such as water) in which the sample is dissolved; another immiscible (or partially miscible) solvent (also called developing solvent) is used as the flow phase. When the developer spreads from one end of the paper to the other under the capillary action of the paper,