engleski

ICP MS determination of metals in total deposited matter in Zagreb, Croatia

Monthly samples of deposited matter were collected over a one-year period at five different sites in Zagreb, Croatia: city centre, northern, southern, western and eastern parts of the city. Bergerhoff-type samplers were used to collect bulk deposition. After determining total deposited matter gravimetrically, the samples were analyzed for metals (Mn, Ni, Cu, Zn, As, Cd, Tl, Pb) by inductively coupled plasma mass spectrometry (ICP MS). Concentrations of metals were below the limit values set by the Croatian air protection legislation. Statistical methods were used to analyze the measurement data. T-test of individual samples showed a statistically significant difference between sampling sites for lead, zinc and copper. The regression analysis showed significant correlations between metals (Pb-Mn, Pb-As, Mn-Cu, As-Mn, As-Tl, Mn-Tl) at different sampling sites.

atmospheric deposition; toxic metals; urban area

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