Real-time chemical sensing of aqueous ethanol glucose mixtures

被引：18

作者：

McKee, JM ^{[1
]}

Johnson, BP

机构：

[1] Broadcast Technol, Verdi, NV 89439 USA

[2] Univ Nevada, Dept Elect Engn, Reno, NV 89557 USA

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2000年 / 49卷 / 01期

关键词：

dielectric liquids; dielectric measurements; measurement; microstrip filters; thin-film devices;

D O I：

10.1109/19.836320

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 new high-frequency approach to monitoring component concentration in dielectric solutions is proposed. After appropriate calibration, the volume percentage of an n-component solution can be uniquely determined by measuring the real part of the solution permittivity at n - 1 distinct frequencies. A flow-through microstrip bandpass filter sensor has been fabricated to demonstrate the accuracy of the technique when applied to a water-ethanol mixture. The sensor can discriminate 0.35% relative variations in ethanol volume concentration when solution temperature is independently monitored.

引用

页码：114 / 119

页数：6

共 14 条

[1] TIME DOMAIN REFLECTOMETRY [J].