title: Electrochemical preparation of composite polyaniline coating and its application in the determination of bisphenol A, 4-n-nonylphenol, 4-tert-octylphenol using direct solid phase microextraction coupled with high performance liquid chromatography.
abstract: For SPME-HPLC, metal wires with better mechanical strength are preferred over the fused silica fibers. In this article, a novel composite polyaniline (CPANI) doped with PEG and polydimethylsiloxane coating (CPANI fiber) was prepared on a stainless steel wire by a three-electrode system: the fiber was used as the work electrode, a calomel electrode and a platinum electrode were used as the reference and the counter electrodes, respectively. To evaluate the new CPANI coating, the coating was used to extract three kinds of phenols (bisphenol A, 4-n-nonylphenol, and 4-tert-octylphenol) in water samples by direct-SPME mode and then desorbed in commercial SPME-HPLC interface to separation. The extraction procedure was also optimized. Five real water samples were investigated. Good recoveries were gained when environmental samples were analyzed.
authors.affiliation: Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Beijing, PR China.
authors.forename: Minjia
authors.initials: M
authors.lastname: Huang
authors.forename: Guibin
authors.initials: G
authors.lastname: Jiang
authors.forename: Yaqi
authors.initials: Y
authors.lastname: Cai
mesh_terms: D000814:Aniline Compounds / Q000138:chemical synthesis*; D001559:Benzhydryl Compounds; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation; D004129:Dimethylpolysiloxanes; D006863:Hydrogen-Ion Concentration; D010636:Phenols / Q000032:analysis*; D011092:Polyethylene Glycols; D045483:Rivers / Q000737:chemistry; D012828:Silicones; D012965:Sodium Chloride; D000098826:Bisphenol A Compounds
chemical_list: D000814:Aniline Compounds; D001559:Benzhydryl Compounds; D004129:Dimethylpolysiloxanes; D010636:Phenols; D011092:Polyethylene Glycols; D012828:Silicones; D012965:Sodium Chloride; C416807:polyaniline; C013830:baysilon; C041594:4-nonylphenol; C105260:4-tert-octylphenol; C006780:bisphenol A; D000098826:Bisphenol A Compounds