Sensitivity and selectivity of surface acoustic wave sensors for organic solvent vapour detection
| Autor: | N. Blom, M. Ehrat, D. Arn, H.M. Widmer, D. Amati, J. Saunois |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Surface acoustic wave
Metals and Alloys Analytical chemistry Condensed Matter Physics medicine.disease Toluene Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Materials Chemistry Acetone medicine Surface acoustic wave sensor Methanol Electrical and Electronic Engineering Selectivity Instrumentation Vapours Dichloromethane |
| Zdroj: | Sensors and Actuators B: Chemical. 7:587-591 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/0925-4005(92)80369-9 |
| Popis: | Surface acoustic wave (SAW) devices have been coated with 20 organic polymers of different chemical nature. Their sensitivities, selectivities and response times towards gaseous organic solvents such as toluene, acetone, ethanol, methanol and dichloromethane in dry air have been determined. The best sensitivities and selectivities are obtained for toluene vapours. In order to compensate for the lack of selectivity, a pattern-recognition technique (partial least-squares regression, PLS) is applied to sensor responses obtained from ternary mixtures of analytes. The predictive properties of the model are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|