Continuous wavelet transform and its application to resolving and quantifying the overlapped voltammetric peaks

摘要

In order to resolve and quantify the overlapped peaks of voltammetry that can be described by sech~2-function, continuous wavelet transform (CWT) is employed. Through CWT by using Marr wavelet, qualiative and quantitative analysis for the mixed solution of Cd(II) and In(III) can be performed from unresolved square wave voltammogram (SWV) and relevant theoretical basis is provided. A new method to construct the baseline for quantitative determination is also proposed. The results of analysis indicate that the overlapped voltammogram can be resolved and quantified effectively, conveniently and satisfactorily via CWT.