Pregled bibliografske jedinice broj: 235315
Heavy Metals Content in Sediment of Caves and Pits in Croatia
Heavy Metals Content in Sediment of Caves and Pits in Croatia // Proceedings of the 6^th International Karstological School
Trenta: Speleological Association of Slovenia, Karst Research Institute ZRC SAZU, 1998. (predavanje, nije recenziran, sažetak, znanstveni)
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Naslov
Heavy Metals Content in Sediment of Caves and Pits in Croatia
Autori
Vrbek, Boris
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Proceedings of the 6^th International Karstological School
/ - Trenta : Speleological Association of Slovenia, Karst Research Institute ZRC SAZU, 1998
Skup
6^th International Karstological School
Mjesto i datum
Trenta, Slovenija, 06.06.1998. - 07.06.1998
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
heavi metals; caves; pits; Karst area; Croatia
Sažetak
Results of some heavy metals content (Pb, Cu, Zn and Cd) of silt within some speleological objects in Croatia have been reported. Investigations include also standard chemical and physical soil analyses. Samples were compiled in different parts of caves and pits from long distance of entrance and in upper parts of channels. Round 1 kg of silt was put into plastic bag, marked and firmly closed till treatment. Average depth of sample taking was 1-15 cm. A total of 25 samples were compiled and analysed during 1981-1997. Chemical analyses and mechanical content have been carried out in soil-physiological laboratory of Forest Research Institute, Jastrebarsko. Humus content %, total nitrogen content %, pH in H_2O and nKCl, CaCO_3 %, P_2O_5 and K_2O content, mechanical soil composition and some heavy metals content (Pb, Cu and Zn) were defined on that occasion. Heavy metals were determined by atomic absorption spectrophotometer "Perkin Elmer 300 S". Standard solutions are prepared according to working instructions PAWLUK (1967), Analytical methods, (1973). The samples found in Lukina jama-Trojama pit system on mount Velebit (over the 1000 m deep pit system, samples number 10 and 11) and samples in caves from very long distance from the entrance (minimum 2000 m, samples no. 20 and 23) have the lowest content of heavy metals between 25 samples collected and analyzed from other caves and pits through Croatia. Values presented in Tab. 1 (No. 10, 11, 20 and 23) have natural content of heavy metals for Karst area in unpolluted subterranean systems in Croatia.
Izvorni jezik
Engleski
Znanstvena područja
Šumarstvo, Biotehnologija
