Global concern about pharmaceutical and endocrine disrupting compounds in water resources is at its most intense due to their adverse effects on human health and environmental sustainability. Polydopamine-coated magnetic nanoparticles (MNPs@PDA) and polypyrrole-coated magnetic nanoparticles (MNPs@PPy) were successfully synthesized with strong magnetic attraction for easy separation. Their binding efficiencies with bisphenol A (BPA), metformin (MF), naphthalene acetic acid (NAA), phenformin (PF), quinine sulfate (QS), and triclosan (TC) in water were determined using capillary electrophoresis with UV detection. At a concentration of 200mgmL-1, the binding efficiencies of MNPs@PPy were found to be 99±1% BPA, 34±4% MF, 39±6% NAA, 99±1% PF, 98±2% QS, and 99±1% TC, whereas MNPs@PDA afforded 65±5% BPA, 14±6% MF, 21±4% NAA, 99±1% PF, 94±2% QS, and 92±3% TC. Hence, both MNPs@PDA and MNPs@PPy have a high capacity for efficient removal of aromatic compounds from water. Bisphenol A and naphthalene acetic acid have more affinity toward magnetic nanoparticles coated with polypyrrole than with polydopamine. Phenformin, quinine sulfate, and triclosan have similar affinities toward both types of polymer-coated nanoparticles. Metformin has little affinity toward either type of nanoparticles.

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Keywords Aromatic compounds, Binding tests, Capillary electrophoresis, Ultraviolet detection, π-Conjugated binding surface
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Journal Clean - Soil, Air, Water
Miah, M. (Musharraf), Iqbal, Z. (Zafar), & Lai, E. P. (2015). Comparative Binding of Endocrine Disrupting Compounds and Pharmaceuticals with Polydopamine- and Polypyrrole-coated Magnetic Nanoparticles. Clean - Soil, Air, Water, 43(2), 173–181. doi:10.1002/clen.201300210