Detection of aromatic hydrocarbons in air and water by using xerogel layers coated on PCS fibers excited by an inclined collimated beam

0304037 - URE-Y 20020055 RIV CZ eng C - Conference Paper (international conference)
Cherif, K. - Hleli, S. - Abdelghani, A. - Jaffrezic-Renault, N. - Matějec, Vlastimil - Mrázek, Jan - Chomát, Miroslav - Kašík, Ivan
Detection of aromatic hydrocarbons in air and water by using xerogel layers coated on PCS fibers excited by an inclined collimated beam.
Prague: Czech Technical University, 2002. In: EUROSENSORS 2002. Proceedings. - (Saneistr, J.; Ripka, P.), s. 403-406
[European Conference on Solid-State Transducers EUROSENSORS /16./. Prague (CZ), 15.09.2002-18.09.2002 (K)]
R&D Projects: GA ČR GA102/02/0780; GA AV ČR KSK2067107 Projekt 07/01:4074
Institutional research plan: CEZ:AV0Z2067918
Keywords : optical fibres * optical sensors
Subject RIV: JB - Sensors, Measurment, Regulation

This paper deals with the detection of aromatic hydrocarbons in air or water which is based on refractive-index changes of a silica xerogel detection layer applied on silica optical fiber. The fiber is excited by an inclined collimated beam. The sensitivity of the tetraethoxysilane- and methyltriethoxysilane- based xerogel layers to benzene and toluene in air and in liquid water are presented. The detection limits were about 500 and 5 ppm for air and water, respectively.
Permanent Link: http://hdl.handle.net/11104/0114181