title: Electrochemical fabrication of polymerized imidazole-based ionic liquid bearing pyrrole moiety for sensitive determination of hexestrol in chicken meat.
abstract: 1-[3-(tert-Butoxycarbonylamino)propyl]-3-[3-(N-pyrrole)propyl]imidazolium tetrafluoroborate [(t-Boc-APPPI)BF4], which is a novel pyrrolyl-functionalized ionic liquid, was synthesized and characterized. Subsequently, it was electrochemically deposited onto a glassy carbon electrode surface to fabricate a polymerized ionic liquid film electrode. X-ray photoelectron spectroscopy, scanning electron microscope and electrochemical impedance spectroscopy were used to confirm the successful polymerization of ionic liquid. Voltammetric behaviors of hexestrol at the film electrode were investigated. The oxidation peak slightly shifted towards positive potential, however, dramatically increased in peak current. Experimental conditions for hexestrol determination were optimized. The oxidation peak current is linear with hexestrol concentration in the range of 1.0 × 10(-8)-1.0 × 10(-5) mol L(-1). The detection limit is estimated to be 2.1 × 10(-9) mol L(-1) (S/N=3). Hexestrol in chicken meat was determined using the film electrode with good accuracy.
authors.affiliation: Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China.
authors.forename: Xuemin
authors.initials: X
authors.lastname: Chen
authors.affiliation: Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China.
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Ningbo Entry-Exit Inspection and Quarantine Bureau of P.R.C., Ningbo 315012, China.
authors.forename: Danchao
authors.initials: D
authors.lastname: Chen
authors.affiliation: Ningbo Entry-Exit Inspection and Quarantine Bureau of P.R.C., Ningbo 315012, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Ma
authors.affiliation: Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China. Electronic address: lichychem@163.com.
authors.forename: Chunya
authors.initials: C
authors.lastname: Li
mesh_terms: D000818:Animals; D002645:Chickens; D006589:Hexestrol / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D058105:Polymerization; D011758:Pyrroles / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; D011758:Pyrroles; D006589:Hexestrol; C029899:imidazole
keywords: Chicken meat; Electropolymerization; Hexestrol; Polymerized ionic liquid