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Abstract: We report on a flow injection chemiluminescence assay for hydroquinone (HQ) using Fe3O4 magnetic nanoparticles capped with oleic acid and coated with a polymer whose surface was molecularly imprinted for HQ to act as the recognition element. Dispersed in an oil phase, the surface imprinted particles display excellent adsorption capacity (63 mg g-1) and a rapid adsorption rate. Packed into a flow cell, the addition of the reagents hexacyanoferrate(III), luminol and chlorhematin generates chemiluminescence whose intensity is linearly related to the concentration of HQ in the range from 2 x 10-7 to 1.0 x 10-5 mg mL-1, with a detection limit of 7.9 x 10-8 mg mL-1 and a relative standard deviation of 2.3 % at 1.0 x 10-7 mg mL-1 HQ (n = 6). The method was successfully applied to the determination of HQ in spiked water samples
Template and target information: hydroquinone, HQ
Author keywords: Hydroquinone, Magnetic molecularly imprinted polymer, Flow injection chemiluminescence, system