A prototype of quartz crystal microbalance-based transducer is proposed for in-situ measurements of very-low chloroform activity. The sensing element consists of a syndiotactic polystyrene thin film sprayed on the piezoelec. quartz electrode of the microbalance. Chloroform adsorption and desorption in the film give rise to a mass variation implying a related variation in the resonance frequency of the crystal. Static and dynamic metrol. characterizations of the sensor prototype were carried out at varying chloroform activity and temp. Satisfactory sensitivity, repeatability, and dynamic hysteresis were highlighted.
A chloroform transducer based sPS-d-coated crystal microbalance.
MENSITIERI, GIUSEPPE;ARPAIA, PASQUALE;SCHIANO LO MORIELLO, ROSARIO
2005
Abstract
A prototype of quartz crystal microbalance-based transducer is proposed for in-situ measurements of very-low chloroform activity. The sensing element consists of a syndiotactic polystyrene thin film sprayed on the piezoelec. quartz electrode of the microbalance. Chloroform adsorption and desorption in the film give rise to a mass variation implying a related variation in the resonance frequency of the crystal. Static and dynamic metrol. characterizations of the sensor prototype were carried out at varying chloroform activity and temp. Satisfactory sensitivity, repeatability, and dynamic hysteresis were highlighted.File in questo prodotto:
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