VORRICHTUNG UND VERFAHREN UM EINE ELEKTROCHEMISCHE ANALYSE ZU MACHEN

摘要

The present invention concerns a method for improving the sensitivity in measurements when performing electrochemical analysis containing low metal concentrations and a means for performing electrochemical analysis. Ordinary stirring has to be avoided during the voltammetric scanning due to the low reproducibility when stirring takes place. A sound exposure, however, can be performed during the entire measurement, increasing the sensitivity. Further it is concluded that sound exposure close to the resonant frequency, has improvement effects at least comparable to stirring, and thus all mechanical stirring can be avoided. It is found that audible sound in the low frequency range, around 100 Hz is very effective for this purpose, with an increase of the analytical signal up to about 300%, without any significant increase in the corresponding noise level.