Solid Phase Extraction

Solid Phase Extraction (SPE) is a laboratory technique used to separate specific compounds from a mixture. It involves passing a liquid sample through a solid material (the sorbent) that selectively captures the compounds of interest. After binding, impurities are washed away, and the target compounds are then eluted (washed off) using a different solvent. This process concentrates and purifies the desired substances, making them easier to analyze. SPE is widely used in fields like environmental testing, pharmaceuticals, and food safety for efficient sample preparation.