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Type: Artigo de periódico
Title: Electrophoresis microchip fabricated by a direct-printing process with end-channel amperometric detection
Author: Coltro, WKT
da Silva, JAF
da Silva, HDT
Richter, EM
Furlan, R
Angnes, L
do Lago, CL
Mazo, LH
Carrilho, E
Abstract: We describe the development of an electrophoresis microchip fabricated by a direct-printing process, based on lamination of printed polyester films with end-channel amperometric detection. The channel structures are defined by polyester (base and cover) and by a toner layer (walls). The polyester-toner devices presented an electroosmotic flow (EOF) magnitude of similar to10(-5) cm(2)V(-1)s(-1), which is generated by a polymeric mixture of the toner and polyester composition. The microelectrodes used for detection were produced combining this laser-printer technology to compact discs. The performance of this device was evaluated by amperometric detection of iodide and ascorbate. The detection limits found were 500 nmol(.)L(-1) (135 amol) and 1.8 mumol(.)L(-1) (486 amol) for iodide and ascorbate, respectively.
Subject: amperometric detection
Country: Alemanha
Editor: Wiley-v C H Verlag Gmbh
Citation: Electrophoresis. Wiley-v C H Verlag Gmbh, v. 25, n. 21-22, n. 3832, n. 3839, 2004.
Rights: fechado
Identifier DOI: 10.1002/elps.200406091
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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