ENVR 146 |
| Acetaminophen and acetylsalicylic acid, a group of pharmaceutical and personal care products (PPCPs), are widely used for pharmaceutical purposes and released into the environment from wastewater treatment plants. However, it is difficult to find suitable enzymes or active receptors capable of effectively recognizing these compounds. In this study, a new procedure for fabricating the acetaminophen and acetylsalicylic acid-based molecularly imprinted polymer(MIPs) nanospheres were developed using the precipitation polymerization method. SEM images and dynamic light scattering (DLS) results showed that the fabricated MIPs are narrow-dispersed nanospheres, which were in the range 145–455 nm. BET analysis showed that the template-based MIPs exhibited the surface areas and adsorption pore sizes of 411 m2/g and 8.8 nm, respectively. The binding capacities of the MIPs show higher selectivity than that of the control polymer. In addition, the effect of porogen on specificity was also evaluated by using acetonitrile, toluene and chloroform as porogen. Results of solid-phase extraction obtained show that the developed MIP nanospheres can accurately separate PPCP compounds with similar structures and have the potential to be applied to the environment for detection and adsorption of PPCPs from aqueous solutions. |
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General Papers
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Environmental Chemistry |