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Continue to ChatMagnetic solid phase extraction of trace paracetamol and caffeine in synthetic urine and wastewater samples by a using core shell hybrid material consisting of graphene oxide/multiwalled carbon nanotube/Fe3O4/SiO2 - https://avesis.erciyes.edu.tr/publication/details/662cd1b7-e1fe-4b0f-8510-5e01b35e8d8e/magnetic-solid-phase-extraction-of-trace-paracetamol-and-caffeine-in-synthetic-urine-and-wastewater-samples-by-a-using-core-shell-hybrid-material-consisting-of-graphene-oxide-multiwalled-carbon-nanotube-fe3o4-sio2