SPME (Solid-phase microextraction)

Solid-phase microextraction (SPME) is a sample preparation technique used in analytical chemistry to detect and analyze substances in liquids, gases, or solids. It involves using a coated fiber that absorbs or adsorbs target compounds from the sample. The fiber is then retrieved and placed in an instrument (like a gas chromatograph) to release and measure these compounds. SPME is advantageous because it is fast, requires minimal sample and solvent, and can detect very low concentrations of substances, making it a useful tool for environmental, clinical, and food safety testing.