In this study, COFs were synthesized on copper foam and used as a new and efficient sorbent for the extraction and preconcentration of phthalate esters from different real samples such as water and beverages. The extracted target analytes were quantified via gas chromatography-flame ionization detection. The structure and morphology of the as-synthesized CuF@ COF were characterized by different techniques. Various key parameters affecting the performance of the TFME method, including the desorption solvent, desorption volume and time, extraction time, salt effect and stirring rate, were investigated. Under the optimized conditions, CuF@ COF combined with GC-FID was successfully applied to the determination of 3 phthalate ester in real samples. The method showed wide linearity (0.1–500 μg. L-1), low limits of determination (0.026–0.27 μg. L-1), and high recoveries (90.0–98 %). These results revealed that CuF@ COF has the potential for efficient extraction of phthalate esters from complex samples
