title: Preparation and evaluation of molecularly imprinted ionic liquids polymer as sorbent for on-line solid-phase extraction of chlorsulfuron in environmental water samples.
abstract: In this report, vinylimidazolium ionic liquid as a functional monomer for preparation of chlorsulfuron (CS) imprinted polymers were first studied. The imprinted materials showed high selectivity for CS, and fast kinetics so that adsorption equilibrium was achieved within 5 min. These materials have been further employed to detect trace CS from water samples by online preconcentration coupled with HPLC. The sorbent offered good linearity (0.005-30 μg L(-1), r(2)>0.99) for on-line solid-phase extraction of trace chlorsulfuron. Under the optimal experimental conditions, the recovery for chlorsulfuron was in the range of 81.0-110.1% for the water samples, with RSDs ranging from 1.2 to 7.6%.
authors.affiliation: Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Guo
authors.forename: Qiliang
authors.initials: Q
authors.lastname: Deng
authors.forename: Guozhen
authors.initials: G
authors.lastname: Fang
authors.forename: Wei
authors.initials: W
authors.lastname: Gao
authors.forename: Shuo
authors.initials: S
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D002851:Chromatography, High Pressure Liquid; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D054802:Molecular Imprinting / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D052616:Solid Phase Extraction / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D013449:Sulfonamides / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D014227:Triazines / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D014753:Vinyl Compounds / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; D013449:Sulfonamides; D014227:Triazines; D014753:Vinyl Compounds; D014874:Water Pollutants, Chemical; C037137:chlorsulfuron