hrvatski

Electroanalysis of heavy metals in water

Water is very important for human health. Heavy metal ions are the cause of environmental pollution from led of petrol, industry, leaching metal ions from soil into lakes and rivers by acid rain. Therefore, the development of electrochemical methods and their application in the determination of heavy metal ions such as zinc, copper, cadmium and lead in water are of great interest. The present development electroanalytical methods (polarography, voltammetry, stripping chronopotentiometry) in the heavy metal analysis of water showed rapidness, robustness, selectivity, low detection limits and low cost of devices. The Croatian legislation on water for human consumption prescribed the maximum permissible concentration of heavy metals in water (Zn 3000 µg/L ; Pb 10 µg/L ; Cd 5, 0 µg/L ; Cu 2, 0 mg/L). The aim of this work is to present different electrochemical techniques and their improvement in the determination of copper, zinc, cadmium and lead in water.

electrochemical methods ; heavy metals ; legislation ; water

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