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学科主题: Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
题名: Potentiometric sensor based on molecularly imprinted polymer for determination of melamine in milk
作者: Liang, RN ; Zhang, RM ; Qin, W
通讯作者: wqin@yic.ac.cn
关键词: Molecularly imprinted polymer ; Potentiometric sensor ; Melamine ; Ion-selective electrode ; Flow analysis
刊名: SENSORS AND ACTUATORS B-CHEMICAL
发表日期: 2009
卷: 141, 期:2, 页:544-550
收录类别: sci
部门归属: [Liang, Rongning; Zhang, Ruiming; Qin, Wei] Chinese Acad Sci, Environm Chem Lab, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Peoples R China; [Liang, Rongning] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Liang, Rongning; Zhang, Ruiming] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; [Qin, Wei] Yantai Univ, Sch Oceanol, Yantai 264005, Peoples R China
摘要: A polymeric membrane ion-selective electrode for determination of melamine is described in this paper. it is based on a molecularly imprinted polymer (MIP) for selective recognition, which can be synthesized by using melamine as a template molecule, methacrylic acid as a functional monomer and ethylene glycol dimethacrylate as a cross-linking agent. The membrane electrode shows near-Nernstian response (54 mV/decade) to the protonated melamine over the concentration range of 5.0 x 10(-6) to 1.0 x 10(-2) mol L-1. The electrode exhibits a short response time of similar to 16 s and can be stable for more than 2 months. Combined with flow analysis system, the potentiometric sensor has been successfully applied to the determination of melamine in milk samples. Interference from high concentrations of ions co-existing in milk samples such as K+ and Na+ can be effectively eliminated by on-line introduction of anion- and cation-exchanger tandem columns placed upstream, while melamine existing as neutral molecules in milk of pH 6.7 can flow through the ion-exchanger columns and be measured downstream by the proposed electrode in an acetate buffer solution of pH 3.7. (C) 2009 Elsevier BY. All rights reserved.
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WOS记录号: WOS:000270343000030
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5406
Appears in Collections:海洋生物_期刊论文

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Liang, RN; Zhang, RM; Qin, W.Potentiometric sensor based on molecularly imprinted polymer for determination of melamine in milk,SENSORS AND ACTUATORS B-CHEMICAL,2009,141(2):544-550
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