A chloroform transducer based on sPS-δ-coated quartz-crystal microbalance for gaseous environment

A prototype of a quartz-crystal microbalance-based transducer is proposed for in-situ measurements of very low chloroform activity in a gaseous environment. The sensing element consists of an innovative semicrystalline form of syndiotactic polystyrene sprayed as a thin film on the piezoelectric quar...

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Bibliographic Details
Published inIEEE transactions on instrumentation and measurement Vol. 54; no. 1; pp. 31 - 37
Main Authors Arpaia, P., Guerra, G., Mensitieri, G., Schiano Lo Moriello, R.
Format Journal Article
LanguageEnglish
Published 01.02.2005
Subjects
Chloroform
Dynamics
Electrodes
Microorganisms
Prototypes
Quartz
Syndiotacticity
Transducers
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Summary:A prototype of a quartz-crystal microbalance-based transducer is proposed for in-situ measurements of very low chloroform activity in a gaseous environment. The sensing element consists of an innovative semicrystalline form of syndiotactic polystyrene sprayed as a thin film on the piezoelectric quartz electrode of the microbalance. Chloroform sorption and desorption in the film give rise to a mass variation, implying a related shift in the resonance frequency of the quartz. Results of static and dynamic metrological characterization of the transducer prototype at varying chloroform concentration and temperature in a gaseous environment are reported. Satisfactory sensitivity, repeatability, and dynamic hysteresis are highlighted.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0018-9456
DOI:10.1109/TIM.2004.840258