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

被引：12

作者：

Arpaia, P ^{[1
]}

Guerra, G

Mensitieri, G

Lo Moriello, RS

机构：

[1] Univ Sannio, Dept Engn, I-82100 Benevento, Italy

[2] Univ Salerno, Dept Chem, I-84084 Fisciano, SA, Italy

[3] Univ Naples Federico II, Dept Mat & Prod Engn, Naples, Italy

[4] Univ Naples Federico II, Dept Elect Engn, I-80125 Naples, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2005年 / 54卷 / 01期

关键词：

chemical transducers; frequency measurement; gas leak detection; intelligent sensors; pollution measurement;

D O I：

10.1109/TIM.2004.840258

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 semicrystailine 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.

引用

页码：31 / 37

页数：7

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