engleski

Microanalysis of relative weight elements percentage in needles of damaged silver fir trees (Abies alba Mill.) at two sites

Concentration of carbon (C), oxygen (O), nitrogen (N), magnesium (Mg), aluminium (Al), silicon (Si), phosphorus (P), mercury (Hg), sulphur (S), lead (Pb), chlorine (Cl), potassium (K), cadmium (Cd), calcium (Ca), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), cupper (Cu) and zinc (Zn), in the form of weight percentage, in the needles of different age classes, current and previous-year one, of two sites, Risnjak National Park and Donja Dobra (control), were measured by X-ray microanalysis (EDAX) in the Scanning Electron Microscope in silver fir trees (Abies alba Mill.). The analysis suggests that elements accumulation of elements, in both years, particularly of heavy metals, appeared in polluted site, like the Risnjak, in the higher amount, whereas in non polluted one, like Donja Dobra, in the lower amount. Moreover, it seems likely that elements at the first site were accumulated and contaminated in very young current-year needles, while in non polluted site in somewhat older, the previous-year ones.

Abies alba; concentration; EDAX; elements; needles; X-ray microanalysis

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