title: Novel amphiphilic polymeric ionic liquid-solid phase micro-extraction membrane for the preconcentration of aniline as degradation product of azo dye Orange G under sonication by liquid chromatography-tandem mass spectrometry.
abstract: A novel amphiphilic polymeric ionic liquid membrane containing a hydrophilic bromide anion and a hydrophobic carbonyl group was synthesized in dimethylformamide (DMF) systems using the ionic liquid 1-butyl-3-vinylimidazolium bromide (BVImBr) and the methylmethacrylate (MMA) as monomers. The prepared amphiphilic ploy-methylmethacrylate-1-butyl-3-vinylimidazolium bromide (MMA-BVImBr) was characterized by a scanning electron microscope and an infrared spectrum instrument. The results of solid-phase micro-extraction membrane (SPMM) experiments showed that the adsorption capacity of membrane was about 0.76μgμg(-1) for aniline. Based on this, a sensitive method for the determination of trace aniline, as a degradation product of azo dye Orange G under sonication, was developed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The calibration curve showed a good linearity ranging from 0.5 to 10.0μgL(-1) with a correlation coefficient value of 0.9998. The limit of quantification was 0.5μgL(-1). The recoveries ranged from 90.6% to 96.1%. The intra- and inter-day relative standard deviations were less than 8.3% and 10.9%. The developed SPMM-LC-MS/MS method was used successfully for preconcentration of trace aniline produced during the sonication of Orange G solution.
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China. Electronic address: caimeiqiang@163.com.
authors.forename: Mei-Qiang
authors.initials: MQ
authors.lastname: Cai
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Wei
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
authors.forename: Chun-Hui
authors.initials: CH
authors.lastname: Du
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
authors.forename: Xu-Ming
authors.initials: XM
authors.lastname: Ma
authors.affiliation: Zhejiang Provincial Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China; Ningbo Key Laboratory of Poison Research and Control, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China. Electronic address: jmcjc@163.com.
authors.forename: Mi-Cong
authors.initials: MC
authors.lastname: Jin
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D001391:Azo Compounds / Q000737:chemistry*; D002853:Chromatography, Liquid; D052578:Ionic Liquids / Q000737:chemistry*; D008567:Membranes, Artificial; D011108:Polymers / Q000737:chemistry; D052616:Solid Phase Extraction / Q000295:instrumentation*; D013010:Sonication; D053719:Tandem Mass Spectrometry
chemical_list: D000814:Aniline Compounds; D001391:Azo Compounds; D052578:Ionic Liquids; D008567:Membranes, Artificial; D011108:Polymers; C008710:Orange G; C023650:aniline
keywords: Amphiphilic polymeric ionic liquid; Aniline; Liquid chromatography–tandem mass spectrometry; Preconcentration; Solid-phase micro-extraction membrane