engleski

TRACE METALS AND DISSOLVED ORGANIC CARBON IN WATER COLUMN OF AN ANCHIALINE OBJECT IN MLJET NATIONAL PARK - CROATIA

Distribution of Cd, Pb, Cu, Zn and dissolved organic carbon (DOC) in water column of Bjejajka anchialine cave were studied seasonally (wet and dry periods). Metal amounts in water column were significantly higher compared to those found in seawater samples taken in near vicinity (100 m). Unusually elevated concentrations of cadmium (up to 300 ng L ) were found in water column of Bjejajka cave, which are two orders of magnitude higher than in nearby surface seawater (~ 7 ng L ). DOC amount in cave water column (up to 10.5 mg C L ) was enhanced comparing to open seawater (up to 3 mg C L ), and diminished below halocline. Elevated concentrations of trace metals and DOC in Bjejajka anchialine cave were of natural origin caused by biogeochemical processes.

Metals ; Organic Matter ; Adriatic Sea

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