Recoverable and recyclable porous polymer for extraction of trace endocrine disrupting compounds from seafood products prior to LC /MS analysis.

Endocrine disrupting compounds (EDCs) in food pose severe threats to human wellness, so it is extremely urgent to develop effective method with high sensitivity for detecting EDCs in seafoods. Herein, novel urea-functionalized magnetic porous polymer (M-NB-POP) was synthesized from N,N,N',N'-tetra(p-aminophenyl)-p-phenylenediamine and 1,3-bis(2-isocyanato-2-propyl)benzene under mild conditions for the first time. M-NB-POP with good recoverability and recyclability shows excellent adsorption for several typical EDCs through hydrogen bonding, π-π and hydrophobic interaction. Using M-NB-POP as magnetic solid-phase extraction adsorbent, an attractive method for effective enrichment of trace EDCs in red shrimp, river prawn and crayfish was successfully developed prior to LC-MS analysis. The proposed method gave a low detection limit of 1.50-7.80 ng g-1, high spiked recoveries of 86.3-111 %, and small relative standard deviation of 1.6-6.0 %. This work provides a new protocol for assessment of trace EDCs in seafoods and concurrently presents a new strategy for developing functional materials to enrich organic pollutants.