论文信息 - Gravimetric Dielectric And Calorimetric Methods For The Detection Of Organic Solventvapours Using Poly(etherurethane) Coatings

Gravimetric Dielectric And Calorimetric Methods For The Detection Of Organic Solventvapours Using Poly(etherurethane) Coatings

SUMMARY Cycloaliphatic poly(etherurethane) has been used as sensitive layer for the detection of organic solvent vapours such as ketones, alcohols, amines, alkanes, aromatic compounds and chlorinated hydrocarbons with quartz microbalances (QMB), interdigital capacitors (IDC) and calorimetric transducers. The sensor signals are completely reversible and reproducible at room temperature. Using QMB's even less than 10 ppm of nitrobenzene in air can be detected. The IDC measurements show particularly high sensitivities for alcohols. The different transducer parameters are discussed comparatively for the different organic volatiles.

A. Hierlemann | U. Weimar | W. Gopel | R. Zhou

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