An Introduction Of SPE And Method For Selecting SPE Cartridge

The capacity of the SPE cartridge refers to the adsorption amount of the column packing. For silica-based solid-phase extraction columns, the capacity is generally 1 to 5 mg/100 mg, which means that the column capacity is 1% to 5% of the mass of the packing. The capacity of the bonded silica gel ion exchange adsorbent packing is expressed in meq/g, that is, the capacity per gram of filler is X milligram equivalent. The capacity of this kind of packing is usually 0.5 ~ 1.5 meq / g.

SPE cartridge is a sample pretreatment device developed from chromatography column for extraction, separation, and concentration. Most common SPE cartridges are injection syringe-type devices made of polyethylene. There are two plugs made of polypropylene or glass fiber in the device. The two plugs are filled with a certain amount of chromatographic adsorbent (packing). The SPE cartridge is packed with a high-purity spherical adsorbent, which is more uniformly distributed, ensuring the repeatability and consistency of the experimental results, in order to ensure a safe, reliable and sample preparation process.

An Introduction Of SPE And Method For Selecting SPE Cartridge