Further results of QCM using for heavy metals determination in water

This paper presents an analytical method which relies on electrolytic deposition of metals from water solution on quartz resonator electrode. The metal deposition process is caused (provoked) by electric potential between quartz crystal electrode and another electrode immersed in solution. The gradual increase of potential results in progressive deposition of metals correctly to electrochemical series. Experiments were carried out for silver, copper, nickel, and lead. The method resolution for individual cations and for ion mixtures was determined. Results show that for individual cations, the method resolution was 0.4 mug/L while for their mixtures, it was over 100 mug/L. Also the tests of heavy metals in mineral and pipe water were carried out.