Abstract
The ‘silver mirror’ reaction is utilized to detect glucose with a piezoelectric quartz crystal. Silver produced in this reaction deposits on the surface of the quartz crystal electrode and forms an elastic film. Sauerbrey’s equation can be applied without the need to consider the effect of viscoelasticity. The properties of the solution were found to have little effect on the response signal. The deposited silver can easily be removed with dilute nitric acid. The quartz crystal can be used indefinitelywithout losing its sensitivity. This method can detect glucose with high sensitivity and good linearity in the range of 1–80 μg ml −1.
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