solid-phase microextraction

Solid-phase microextraction (SPME) is a technique used to collect and analyze small amounts of chemicals from liquids or gases without using solvents. It involves exposing a thin, coated fiber to the sample, where target compounds naturally stick to the coating. After absorption, the fiber is inserted into an analytical instrument, like a chromatograph, which heats it up to release and identify the chemicals. SPME is sensitive, efficient, and environmentally friendly, making it useful in fields like environmental testing, food safety, and forensics.