Facile preparation and applications of graphitic carbon nitride coating in solid-phase microextraction

•g-C3N4 can be used as a coating material for SPME applications.•g-C3N4 fiber can be applied to extract both low- and high- polarity analytes.•g-C3N4 fiber reveals excellent extraction ability and durability.

In this study, graphitic carbon nitride (g-C3N4) was used as a coating material for solid-phase microextraction (SPME) applications. Coupled to gas chromatography (GC), the extraction ability of the SPME fiber was investigated and compared with the commercial fibers of 100 μm PDMS and 85 μm CAR/PDMS using six target analytes including deltamethrin, nerolidol, amphetamine, dodecane, ametryn and acrylamide. The g-C3N4 coating revealed excellent extraction ability and durability comparing with those of the commercial fibers due to its loose structure and unique physicochemical properties. The repeatability for each single fiber was found to be 3.46% and reproducibility for fiber to fiber was 8.53%. The g-C3N4 SPME fiber was applied to the determination of acrylamide in potato chips, the linearity and detection limit was 0.5-250 μg g−1 and 0.018 μg g−1, respectively.