Naslov
Contribution to the knowledge of the content of heavy metals (Pb, Cu, Zn) in speleological objects in the Risnjak National Park (Croatia)

Autori
Vrbek, Boris ; Buzjak, Nenad

Izvornik
Acta carsologica (0583-6050) 33 (2004), 2; 183-188

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
heavy metals; cave sediments; speleological objects; Risnjak; Gorski kotar

Sažetak
Samples of silt were taken from six speleological objects in the "Risnjak" National Park in Gorski kotar. The samples were taken from almost inaccessible rock fissures and shafts in order to find the most natural sediment outside the reach of anthropogenic pollution. The samples were examined in the Laboratory of the Forest Research Institute, where standard pedological analyses were performed, and the content of several heavy metals (Pb, Cu, Zn and Cd) was determined. The results indicate relatively low values of the content of lead, copper and zinc, while the values of cadmium in the sediment were increased above the limit level of 2 mgkg-1 in the majority of speleological objects. The content of other heavy metals (Pb, Cu and Zn) in mgkg-1 was lower than previously determined in samples taken from other speleological objects on the Croatian territory. Also, the content of heavy metals was lower in relation to surface soil samples taken from the humus horizon and mineral part of the soil under the parent rock of limestone, when sampling the soils of "Risnjak" National Park.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo, Biotehnologija

POVEZANOST RADA