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Abstract: The phenolphthalein-imprinted polymer was prepared with methacrylic acid as functional monomer and ethylene glycol dimethacrylate as cross-linker. Taking advantage of the quenching effect of phenolphthalein on the potassium permanganate-HCl-anhydrous alcohol chemiluminescence system, a new model was established to determine phenolphthalein by a highly selective flow injection chemiluminescence method. The traditional flow-though cell was replaced with a novel flow path using a Y-shaped polymethyl methacrylate column, through which the three reactants were injected simultaneously. The linear range of this assay was from 1.0 × 10-8 to 1.0 × 10-6 g/mL (r = 0.9978). The limit of detection was 8.9 × 10-9 g/mL. The relative standard deviation for the determination of 1.0 × 10-8 g/mL phenolphthalein solution was below 2.9% (n = 11). The proposed method was applied to the determination of phenolphthalein in real samples with satisfactory results. Copyright © 2009 John Wiley & Sons, Ltd
Template and target information: phenolphthalein
Author keywords: molecular imprinting polymer, chemiluminescence, phenolphthalein, flow injection