Optical sensing of hydrocarbons in air or in water using UV absorption in the evanescent field of fibers
| Autor: | I. Latka, G. Schweizer, H. Lehmann, R. Willsch |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
chemistry.chemical_classification
Optical fiber Absorption spectroscopy Metals and Alloys Analytical chemistry Polymer Condensed Matter Physics Cladding (fiber optics) medicine.disease_cause Spectral line Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Hydrocarbon chemistry law Materials Chemistry medicine Gas detector Electrical and Electronic Engineering Composite material Instrumentation Ultraviolet |
| Zdroj: | Sensors and Actuators B: Chemical. 38:150-153 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/s0925-4005(97)80185-2 |
| Popis: | A fiber-optic sensor for the monitoring of organic pollutants in air and water is presented. The UV absorption spectra are used for the measurement of concentration via the evanescent field of silica fibers. Special hydrophobic polymers which are solvents for hydrocarbons are used as cladding materials. The fibers coated with the tested siloxanes and Teflon show different sensitivities and time response behaviour. Further improvement of the sensitivity is reached through coiling of the fiber. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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