Application Advantages Of SPE
SPE is a sample pretreatment technology developed in recent years. It is developed by the combination of liquid-solid extraction and column liquid chromatography, which is mainly used for sample separation, purification, and concentration. Compared with traditional liquid-liquid extraction methods, it can improve the recovery rate of analytes and the more effective separation of the analyte and the interference component reduce the sample pretreatment process, and the operation is simple, time-saving and labor-saving.
A solid-phase extraction device is a physical extraction process involving a liquid phase and a solid phase. In the solid-phase extraction process, the adsorption of the solid relative analyte is greater than that of the sample mother liquor. When the sample passes through the solid-phase extraction cartridge, the analyte is adsorbed on the solid surface, and the other components pass through the column with the sample mother liquor, and finally the appropriate the solvent takes off the analyte. It is widely used in the fields of medicine, food, environmental protection, commodity inspection, pesticide residues, etc.
SPE is a widely used and popular sample preparation technology that uses a solid adsorbent to adsorb a target compound in a liquid sample, separate it from the matrix and interfering compound of the sample, and then elute or heat it with the eluent. It is more ideal than ordinary solvent extraction in several cases:
1.Pretreatment of organic matter in water.
It is basically oscillating extraction with an organic solvent which is incompatible with water, and the advantages are as follows: