title: A novel stir bar sorptive extraction coating based on monolithic material for apolar, polar organic compounds and heavy metal ions.
abstract: In this study, a novel stir bar sorptive extraction (SBSE) based on monolithic material (SBSEM) was prepared. The monolithic material was obtained by in situ copolymerization of vinylpyrrolidone and divinylbenzene in the presence of a porogen solvent containing cyclohexanol and 1-dodecanol with azobisisobutyronitrile as initiator. The influences of polymerization conditions on the extraction efficiencies were investigated, using phenol and p-nitrophenol as detected solutes. The monolithic material was characterized by various techniques, such as elemental analysis, scanning electron microscopy, mercury intrusion porosimetry, infrared spectroscopy. Polycyclic aromatic hydrocarbons were used to investigate the extraction efficiencies of SBSEM for apolar analytes. Hormones, aromatic amines and phenols were selected as test analytes to investigate the extraction efficiencies of SBSEM for weakly and strongly polar compounds. The results showed that the new SBSEM could enrich the above-mentioned organic compounds effectively. It is worthy to mention that the SBSEM can enrich some heavy metal ions, such as Cu(2+), Pb(2+), Cr(3+) and Cd(2+), through coordination adsorption. To our best knowledge, that is the first to use SBSE to enrich heavy metal ions.
authors.affiliation: State Key Laboratory of Marine Environmental Science, Environmental Science Research Center, Xiamen University, Xiamen 361005, China. hxj@xmu.edu.cn
authors.forename: Xiaojia
authors.initials: X
authors.lastname: Huang
authors.forename: Ningning
authors.initials: N
authors.lastname: Qiu
authors.forename: Dongxing
authors.initials: D
authors.lastname: Yuan
authors.forename: Benli
authors.initials: B
authors.lastname: Huang
mesh_terms: D000327:Adsorption; D006728:Hormones / Q000302:isolation & purification; D007477:Ions; D019216:Metals, Heavy / Q000302:isolation & purification*; D008722:Methods; D009930:Organic Chemicals / Q000302:isolation & purification*; D010636:Phenols / Q000302:isolation & purification; D011084:Polycyclic Aromatic Hydrocarbons / Q000302:isolation & purification; D011108:Polymers / Q000737:chemistry*
chemical_list: D006728:Hormones; D007477:Ions; D019216:Metals, Heavy; D009930:Organic Chemicals; D010636:Phenols; D011084:Polycyclic Aromatic Hydrocarbons; D011108:Polymers