In recent years, several sample pretreatment techniques, such as solid-phase extraction (SPE), stir-bar sorptive extraction (SBSE) and solid-phase microextraction (SPME), have been applied to the separation and pre-concentration of PAHs in coffee or tea samples. SPE has the drawback that the adsorbents must be packed into an SPE cartridge, which is laborius and difficult to operate. SBSE has the disadvantages of manual operation and memory effects. For SPME, the adsorbents are separated from the aqueous phase by centrifugation or filtration, which can be time consuming when dealing with large sample volumes. In addition, the SPME fibres are relatively expensive and the polymer coatings are fragile and easily broken.