ICP-OES Determination of Select Metals in Surface Water – a Metrological Study
Aneta Chochorek1, Andrzej Bobrowski2, Zuzana Kiralyova3, Jan Mocak3,4
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1Inspectorate for Environmental Protection in Kraków, Poland
2Department of Building Materials, Faculty of Materials Science and Ceramics, University of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Kraków, Poland
3Institute of Analytical Chemistry, Slovak University of Technology, Radlinskeho 9, SK-81237 Bratislava, Slovakia
4Department of Chemistry, University of St. Cyril and Methodius, Nam. J. Herdu 2, SK-91701 Trnava, Slovakia
Pol. J. Environ. Stud. 2010;19(1):59–64
Ten selected metals, namely Zn, Cr, Cd, Cu, Ni, Pb, Fe, Mn, Mg and Ca, commonly present in surface waters were determined by inductively coupled plasma atomic emission spectroscopy (ICP-OES). For all quantitative analyses, basic metrological characteristics were obtained, including estimation of combined and expanded uncertainties. Special attention was given to ascertaining which component of uncertainty plays a dominant role in the overall determination process (from sampling to final results), and particularly, in ICPOES calibration and measurement. The largest contribution to the combined uncertainty of the final analytical determination of the element concentrations was due to sampling and calibration, as well as general imprecision of the whole analytical procedure.