An anionic exchange stir rod sorptive extraction based on monolithic material for the extraction of non-steroidal anti-inflammatory drugs in environmental aqueous samples

► A poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) monolithic polymer was prepared as a coating of stir rod sorptive extraction (SRSE). ► SRSE was demonstrated for the extraction of three non-steroidal anti-inflammatory drugs. ► A sensitive SRSE-HPLC/UV method for the determination of NSAIDs in environmental aqueous samples was proposed.