title: Preparation, characterization and application of a new stir bar sorptive extraction based on poly(vinylphthalimide-co-N,N'-methylenebisacrylamide) monolith.
abstract: In this study, a new stir bar sorptive extraction (SBSE) coating based on poly(vinylphthalimide-co-N,N'-methylenebisacrylamide) monolith (SBSE-VPMB) was prepared. The influences of the contents of monomer in polymerization mixture and the percentage of porogen solvent on the extraction performance were investigated thoroughly. Several characteristic techniques, such as elemental analysis, scanning electron microscopy, mercury intrusion porosimetry and infrared spectroscopy, were used to characterize the monolithic material. The analysis of oxfendazole (OFZ) and mebendazole (MBZ) in milk and honey samples by the combination of SBSE with HPLC with diode array detection was selected as paradigms for the practical evaluation of the new coating. Under the optimized extraction conditions, the limits of detection (S/N=3) for OFZ and MBZ were 0.23-0.60 μg/L in milk and 0.24-1.08 μg/L in honey, respectively. The method also showed good linearity, repeatability, high feasibility and acceptable recoveries for real samples. At the same time, the extraction performance and the distribution coefficients (K(VPMB/W)) of OFZ and MBZ on SBSE-VPMB were compared with other SBSEs based on porous monoliths and commercial SBSE.
authors: State Key Laboratory of Marine Environmental Science, Environmental Science Research Center, Xiamen University, Xiamen, P. R. China. hxj@xmu.edu.cn
authors: Xiaojia
authors: X
authors: Huang
authors: Linli
authors: L
authors: Chen
authors: Dongxing
authors: D
authors: Yuan
authors: Xianbin
authors: X
authors: Luo
mesh_terms: D000178:Acrylamides / Q000737:chemistry; D000327:Adsorption; D000818:Animals; D001562:Benzimidazoles / Q000737:chemistry / Q000302:isolation & purification; D002417:Cattle; D002851:Chromatography, High Pressure Liquid; D005506:Food Contamination / Q000032:analysis; D006722:Honey / Q000032:analysis*; D008463:Mebendazole / Q000737:chemistry / Q000302:isolation & purification; D008892:Milk / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D019155:Veterinary Drugs / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D000178:Acrylamides; D001562:Benzimidazoles; D011108:Polymers; D019155:Veterinary Drugs; D008463:Mebendazole; C021221:N,N'-methylenebisacrylamide; C011030:oxfendazole