A monolithic continuous-flow microanalyzer with amperometric detection based on the green tape technology

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dc.contributor.author Martínez Cisneros, Cynthia Susana
dc.contributor.author Da Rocha, Zaira
dc.contributor.author Ferreira, Marcos
dc.contributor.author Valdés, Francisco
dc.contributor.author Seabra, Antonio
dc.contributor.author Góngora Rubio, Mario
dc.contributor.author Alonso Chamarro, Julián
dc.date.accessioned 2018-04-27T08:41:14Z
dc.date.available 2018-04-27T08:41:14Z
dc.date.issued 2009-08-07
dc.identifier.bibliographicCitation Martínez-Cisneros, C. S., da Rocha, Z., Ferreira, M., Valdés, F., Seabra, A., Góngora-Rubio, M., Alonso-Chamarro, J. (2009). A novel monolithic continuous-flow microanalyzer with amperometric detection based on the green tape technology. Analytical chemistry, 81(17), 7448-7453
dc.identifier.issn 0003-2700
dc.identifier.uri http://hdl.handle.net/10016/26741
dc.description.abstract The development of micro total analysis systems (muTAS) has become a growing research field. Devices that include not only the fluidics and the detection system but also the associated electronics are reported scarcely in the literature because of the complexity and the cost involved for their monolithic integration. Frequently, dedicated devices aimed at solving specific analytical problems are needed. In these cases, low-volume production processes are a better alternative to mass production technologies such as silicon and glass. In this work, the design, fabrication, and evaluation of a continuous-flow amperometric microanalyzer based on the green tape technology is presented. The device includes the microfluidics, a complete amperometric detection system, and the associated electronics. The operational lifetime of the working electrode constitutes a major weak point in electrochemical detection systems, especially when it is integrated in monolithic analytical devices. To increase the overall system reliability and its versatility, it was integrated following an exchangeable configuration. Using this approach, working electrodes can be readily exchanged, according to the analyte to be determined or when their surfaces become passivated or poisoned. Furthermore, the electronics of the system allow applying different voltamperometric techniques and provide four operational working ranges (125, 12.5, 1.25, and 0.375 muA) to do precise determinations at different levels of current intensity.
dc.description.sponsorship The authors would like to thank the Spanish MEC for its financial support through: Consolider-Ingenio 2010 (CSD2006-00012), TEC2006-13907-C04-04/MIC and CIT- 310200-2007-29.
dc.format.extent 20
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher American Chemical Society
dc.rights © 2009 American Chemical Society
dc.subject.other LTCC
dc.subject.other Miniaturization
dc.subject.other Potentiostat
dc.subject.other μTAS
dc.subject.other Monolithic amperometric microanalyzer
dc.subject.other Exchangeable electrode
dc.title A monolithic continuous-flow microanalyzer with amperometric detection based on the green tape technology
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.identifier.doi https://doi.org/10.1021/ac9012418
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2006-13907-C04-04/MIC
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 7448
dc.identifier.publicationissue 17
dc.identifier.publicationlastpage 7453
dc.identifier.publicationtitle Analytical chemistry
dc.identifier.publicationvolume 81
dc.identifier.uxxi AR/0000021093
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