Detection of volatile amines using a quartz crystal with gold electrodes

被引：20

作者：

Gomes, MTSR ^{[1
]}

Veríssimo, MIS ^{[1
]}

Oliveira, JABP ^{[1
]}

机构：

[1] Univ Aveiro, Dept Chem, P-3810 Aveiro, Portugal

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1999年 / 57卷 / 1-3期

关键词：

amine; quartz crystal microbalance; piezoelectric quartz crystal;

D O I：

10.1016/S0925-4005(99)00087-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A quartz crystal with gold electrodes is used to detect and quantify volatile amines. The magnitude of the observed frequency decrease is highly dependent on the roughness of the surface of the gold electrodes and sensitivity can be increased by rubbing them with alumina. Water increases the observed signal, leading to important errors in the amine quantification. However, the presence of minor amounts of water is readily detected, as the plotted frequency signal shows a marked distortion. The effect of water on the interaction between amine and gold was studied by infrared spectroscopy. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：261 / 267

页数：7

共 11 条

[1]

Bellamy L. J., 1954, The Infrared Spectra of Complex Molecules

[2] MEASUREMENT OF INTERFACIAL PROCESSES AT ELECTRODE SURFACES WITH THE ELECTROCHEMICAL QUARTZ CRYSTAL MICROBALANCE [J].