title: Molecularly imprinted solid-phase extraction combined with high performance liquid chromatography for analysis of phenolic compounds from environmental water samples.
abstract: The molecularly imprinted bulk polymer with 2,4,6-trichlorophenol (2,4,6-TCP) as the template molecule and methylacrylic acid (MAA), ethylene glycol dimethacrylate (EGDMA) as functional monomer and the crosslinker, respectively, has been prepared and applied to the molecularly imprinted solid-phase extraction (MISPE) procedure for selective preconcentration of phenolic compounds from environmental water samples. Various parameters affecting the extraction efficiency of the polymer have been evaluated to optimize the selective preconcentration of the phenolic compounds from aqueous samples. The characteristics of the MISPE method were validated by HPLC. The recoveries ranged between 90% and 98% (RSD: 0.9-2.3%, n=3) for tap water, between 85% and 105% (RSD: 2.6-4.9%, n=3) for river water, between 78% and 98% (RSD: 2.6-5.4%, n=3) for sewage water fortified with 0.4 mg L(-1) of phenol, 4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), pentachlorophenol (PCP). It was demonstrated that this MISPE-HPLC method could be applied to direct preconcentration and determination of phenolic compounds in environmental water samples.
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
authors.forename: Qin-Zhong
authors.initials: QZ
authors.lastname: Feng
authors.forename: Li-Xia
authors.initials: LX
authors.lastname: Zhao
authors.forename: Wei
authors.initials: W
authors.lastname: Yan
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Lin
authors.forename: Zhi-Xia
authors.initials: ZX
authors.lastname: Zheng
mesh_terms: D002733:Chlorophenols; D002851:Chromatography, High Pressure Liquid; D007220:Industrial Waste / Q000517:prevention & control*; D054802:Molecular Imprinting; D010636:Phenols / Q000032:analysis* / Q000302:isolation & purification; D011108:Polymers; D052616:Solid Phase Extraction / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D002733:Chlorophenols; D007220:Industrial Waste; D010636:Phenols; D011108:Polymers; D014874:Water Pollutants, Chemical; C024564:2,4,6-trichlorophenol