▎ 摘　　要

NOVELTY - Solid phase micro-extraction head comprises a metal carrier and a coating material coated on the surface of the metal carrier, where the coating material is ferromagnetic fluorinated graphene. USE - Solid phase micro-extraction head for enriching perfluorinated compounds. ADVANTAGE - The solid phase micro-extraction head effectively enriches perfluorinated compounds, and has good thermal stability in an organic solvent, high mechanical strength and greatly enhanced stability and firmness of the extraction coating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing solid phase micro-extraction head, which involves adding ethanol in ultrasonic dispersion, immersing magnetized wire in dispersion, and then subjecting to aging treatment in nitrogen. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the solid phase micro-extraction device. (Drawing includes non-English language text).