The main points of the experimental operation of atmospheric distillation and thin layer analysis, what is the experimental principle?

Atmospheric distillation is distillation at atmospheric pressure.

Principle of the solution is subjected to heat gasification, gasification of the solvent by cooling and condensation into liquid and recovery, the recovery of the liquid is a purer solvent, so that the extract is concentrated.

Use is suitable for low boiling point organic solvents extraction solution concentration recovery.

Thin layer chromatography is a modern physicochemical separation, analysis technology. It can be used for both the separation of mixtures, finished product purity check. It can also be used for the characterization and quantification of compounds, especially for the separation and identification of structurally similar components in traditional Chinese medicine can often obtain better results, chromatography is the most commonly used separation and identification methods in recent times. Chromatography is divided into thin-layer chromatography, paper chromatography and column chromatography according to the different modes of operation.

Principle of thin-layer chromatography is the adsorbent or support agent evenly spread on a thin-layer plate, forming a thin layer, the sample to be separated in the thin-layer plate, with the appropriate solvent to unfold, so that the mixture can be separated method. Thin layer chromatography is a micro-volume, rapid chromatographic method. Used for the identification of pure substances, can also be used for the separation of mixtures, purification and content determination, can also be used to find out and determine the elution conditions of column chromatography.