| Abstract: | ABSTRACT|Selectivity of fibre optical sensors can be improved by replacing the neat polymer cladding of optical fibres with a supported liquid membrane (SLM). In the present application the combination polysiloxane/perfluorokerosene was chosen as SLM. Halogenated hydrocarbons have been analysed. In addition to the enhanced selectivity over the conventional polysiloxane membrane, the response time of the SLM decreases more rapidly upon increasing analyte concentration, and its steady state time is reduced to 50% for all concentrations. However, the SLM detection limit deteriorates by a factor of 2. |
