Spatial Distribution of Uranium and Radium in the Sedirnents, Musels (Mytilus sp.) and Sea Water in Port of Sibenik

  • Neven Curkov
  • Vlado Cuculić
  • Delko Barišić
  • Marina Mlakar
Keywords: uranium, radium, sediment, seawater, mussels Mytilus sp., Krka river Estuary, phosphate


The purpose of this study is to assess the response of theaquatic environment (sediment, sea water and mussels Mytilussp.) on uranium and radium activity and concentration followingthe decrease of phosphate discharges from a technologicallyimproved transhipment terminal, situated at the CroatianAdriaticcoast in the port of Sibenik. The highest 238U activities(485±16 Bq kg' 1 dry weight) and 226Ra activities(662±6 Bq kg' 1 dry weight) were found in the sediment samplecollected from the sampling site closest to the terminal.The maximum concentrations in the sediment samples areabove the natural ranges and are clearly indicative of technologicaI influence.Mussel samples from the port of Sibenik showed levels of238U activities in the range from 12.1 ±2.9 to 19.4±7.2 Bq kg'1dry weight and 226 Ra activities from 1. 9 ± 0. 5 to 5. 9 ± 1.1 Bqkg'1 dry weight, which is somewhat higher than in consumemussels.Only the sea water sample at the sampling site, taken justabove the bottom sediment, shows higher uranium concentration(3.1±0.2 f.Lg L 1) comparing to the samples taken in uppersea water layers (2.1 ±0.2 f.Lg L 1). Higher concentration is in therange of the concentration level of uranium in natural seawater.Since the transhipment terminal in the port of Sibenik wasmodernised in the eighties, the discharge of the phosphate oreinto the seawater was drastically reduced and, consequently,uranium concentration levels in the seawater decreased. Theenhanced uranium and radium activity levels are found only inthe sediment near operational docks, and in the mussels whichlive on this docks.


Aguado, J. L., Bolivar, J, P. & Garcia-Tenorio, R.:

Sequential extraction of226Ra in sediments from an Estuary

affected historically by anthropogenic inputs of natural

radionuclides, Journal of Environmental Radioactivity,

, 117-126, 2004.

BariSic, D., Lulic, S. & Miletic, P.: Radium and Uranium

in phosphate fertilizers and their impact on the

radioactivity of waters. Water Research, 26, 607-611,

Barisic, D., Vertacnik, A., Lulic, S., Mihelcic, G., Sondi,

I., Juracic, M., Prohic, E. & Crmaric R.: Radiological

characteristics of recent marine sediments of the Adriatic

sea. International Seminar on the Use of Isotope Techniques

in Marine Environmental Studies. Athens,

Greece, IAEA-SR-194/8, 1996.

Cukrov, N., Barisic, D. & Branica, M.: Content of the

K, 232Th, 226 Ra, 238 U & 137 Cs in the recent sediments of the

Krka River Estuary. in: Briand, F. (Ed.), Rapp. 37 Congress

CIESM, Barcelona, 20, 2004.

Djogic, R., Sipos, L. & Branica, M.: Characterization of

uranium (VI) in seawater. LimnoL Oceanogr., 31, 1122-

·1131, 1986.

Djogic, R. & Branica, M.: Dissolved uranyl complexed

species in artificial seawater. Marine Chemistry, 36, 121-

·135, 1991.

Fichet, D., Radenac, G. & Miramand, P.: Experimental

studies of impacts of harbour sediments resuspension to

marine invertebrates larvae: bioavailability of Cd, Cu, Pb

and Zn and toxicity. Marine Pollution Bulletin, 36, 509-

·518, 1998.

Goldberg, E.D., Broecker, W.S., Gross, M.G. & Turekian,

K.K.: Radioactivity in the Marine Environment. Nat.

Acad. Sci., Washington DC, 137-146, 1971.

Gonzales-Labajo, J,, Bolivar, J.P. & Garcia-Tenorio,

R.: Natural radioactivity in waters and sediments from a

Spanish mining river, Radiation Physics and Chemistry,

, 643-644, 2001.

Juracic, M., Prohic, E., Mineralogy, Sources of particles,

and sedimentation in the Krka River Estuary (Croatia).

Geol. Vjesnik, 44, 195-200, 1991.

Kniewald, G., Kwokal, Z. & Branica, M.: Marine sampling

by scuba diving. 3. Sampling procedure for measurement

of mercury concentrations in estuarine waters

and seawater. Marine Chemistry, 22, 343-352, 1987.

Long, E.R., Robertson, A., Wolfe, D.A., Hameedi, J. &

Sloane, G.M.: Estimates of the spatial extent of sediment

toxicity in major US estuaries. Environ. Sci. Techn., 30,

-3592, 1996.

Mlakar, M. & Branica, M.: Stripping voltammetric determination

of trace levels of uranium by synergic adsorption.

Analitica Chimica Acta, 221, 279-287, 1989.

Mlakar, M. & Branica, M.: Applicability of synergistic

adsorption in electroanalysis of dissolved uranium in seawater.

Marine Chemistry, 46, 61-66, 1994.

Singhal, R.K., Joshi, S.N. & Hegde, A.G.:Association of

uranium with colloidal and suspended particulate matter

in Arabian sea near west coast of M aharashtra (India). J.

Radioanalytical Nucl. Chem., 261, 263-267, 2004.

Skwarzec, B., Borylo, A. & Struminska, D.: 214U and

U isotopes in water and sediments of the southern Baltic.

J. Environ. Radioactivity, 61,345-363. 2002.

Veeh, H.H.: Deposition of uranium from the ocean.

Earth Planet. Sci. Lett., 3, 145-150, 1967.

Web site of the Port of Sibenik,, 2001.

How to Cite
Curkov N, Cuculić V, Barišić D, Mlakar M. Spatial Distribution of Uranium and Radium in the Sedirnents, Musels (Mytilus sp.) and Sea Water in Port of Sibenik. Promet [Internet]. 1 [cited 2024Mar.3];18(2):89-3. Available from:
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