Separation Simplified - What is SPE?

SPE is a technique that separates analytes, using physical or chemical adsorption interactions with a solid media. The media is mounted on a sorbent material which is in the form of either a disk or column.
The analytes are retained on the media as the sample passes through the sorbent material. The analytes are eluted from the media using a solvent in which the analytes are soluble and this solution is retained for analysis.