In this work molecular imprinted nanoparticles (MINPs) was synthesized and applied for ultrasonic
assisted solid phase extraction of celecoxib (CEL) from human plasma sample following its combination
by HPLC–UV. The MINPs were prepared in a non-covalent approach using methacrylic acid as monomer,
CEL as template, ethylene glycol dimethacrylate as cross-linker, and 2,2-azobisisobutyronitrile (AIBN) as
the initiator of polymerization. pH, volume of rinsing and eluent solvent and amount of sorbent influence
on response were investigated using factorial experimental design, while optimum point was achieved
and set as 250 mg sorbent, pH 7.0, 1.5 mL washing solvent and 2 mL eluent by analysis of results according
to design expert (DX) software. At above specified conditions, CEL in human plasma with complicated
matrices with acceptable high recoveries (96%) and RSD% lower than 10% was quantified and estimated