Improving celerity of heavy metals measurements

This paper presents a low cost measurement system to identify heavy metals dissolved in water and to evaluate their concentrations. Two main objectives of the proposed measurement system must be underlined, both related with measurement celerity. The first one improves measurement celerity by reducing the requested time to remove dissolved oxygen contained in the water sample. The second one proposes a flexible voltammetry voltage scan that improves measurement celerity using a fast voltage scan that identifies the heavy metals dissolved in the solution with higher concentrations and then a slower voltage scan is performed around the voltammogram current peaks associated with the heavy metals with higher concentrations.