Inventors: Tan F, Liu X, Quan X, Chen JW, Zhao HX
Patent Title: Electricity enhanced molecular imprinting solid phase micro-extraction method
Publication date: 2011
Publication number: CN102294131

Abstract: The invention relates to an electricity enhanced molecular imprinting solid phase micro-extraction method, characterized by: using a conductive molecular imprinting micro-extraction fiber as a working electrode, a platinum wire as an electrode and a saturated calomel electrode as a reference electrode, applying a bias voltage on the working electrode, letting a target compound be subject to electrophoresis and diffusion and migration to allow the target compound to reach the surface of the working electrode to complete the molecular imprinting identification extraction; and when extracting, providing a bias voltage to the working electrode through a electrochemical work station or potentiostat. The conductive molecular imprinting micro-extraction fiber is a metal wire with the diameter of 0.5-1.0 mm, and one end of the fiber has a carbon nanotube-conductive molecular imprinting polymer composite coating with the thickness of 50-100 mu m and length of 1-2 cm. The extraction method is suitable for the extraction of ionic compounds and strong polar compounds. The conductive molecular imprinting micro-extraction fiber has simple preparation, large adsorption capacity to the target compound, high extraction efficiency, and good selectivity, can be reused more than 100 times, and has wide application prospects in the field of analytical chemistry and environmental analysis.
URL: http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20111228&DB=EPODOC&locale=en_EP&CC=CN&NR=102294131A&KC=A&ND=1