Automatic baseline correction in voltammetry

Problem of the effective baseline correction method in voltammetry remains important. Therefore, this work presents an automatic effective algorithm, uncomplicated in implementation and convenient in usage. The idea of the presented strategy is iterative fitting the whole voltammogram by the polynomial, without prior separation of the peaks. The points of the generated curve are used as threshold values in the temporary modification of the signal.With the use of simulated signals we demonstrated operation of the algorithm and optimized its parameters. Further, in voltammetric determination of Pb(II) traces (5.0 and 25.0 ng·mL−1) in two certified reference materials, the obtained percent of recovery was 101.8-106.6 and correlation coefficient not lower than 0.998.