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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32952

Title: Pyridine vapors detection by an optical fibre sensor
Authors: Elosua, César
Bariain, Cándido
Matias, Ignacio R.
Rodríguez-Diéguez, Antonio
Colacio Rodríguez, Enrique
Salinas-Castillo, Alfonso
Segura Carretero, Antonio
Fernández Gutiérrez, Alberto
Issue Date: 2008
Abstract: An optical fibre sensor has been implemented towards pyridine vapors detection;to achieve this, a novel vapochromic material has been used, which, in solid state, suffers achange in colour from blue to pink-white in presence of pyridine vapours. This complex isadded to a solution of PVC (Poly Vinyl Chloride), TBP (Tributylphosphate) andtetrahydrofuran (THF), forming a plasticized matrix; by dip coating technique, the sensingmaterial is fixed onto a cleaved ended optical fibre. The fabrication process was optimizedin terms of number of dips and dipping speed, evaluating the final devices by dynamicrange. Employing a reflection set up, the absorbance spectra and changes in the reflectedoptical power of the sensors were registered to determine their response. A linear relationbetween optical power versus vapor concentration was obtained, with a detection limit of 1ppm (v/v).
Sponsorship: Financial support from the Spanish Comisión Interministerial de Ciencia y Tecnología within projects TEC2006-12170/MIC, TEC2004-05936-C02-01/MIC, BQU2001-3221, CTQ2005-09023 and Project of Excellence RNM666 de la Junta de Andalucía, is acknowledged.
Publisher: MDPI
Keywords: Fibre optic sensor
Pyridine vapors sensor
Vapochromic cobalt complex
Dip coating technique
URI: http://hdl.handle.net/10481/32952
ISSN: 1424-8220
Citation: Elosua, C.; et al. Pyridine vapors detection by an optical fibre sensor. Sensors, 8(2): 847-859 (2008). [http://hdl.handle.net/10481/32952]
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