Dr. Ivan Kobal

Contact information

Office:

Address: Jozef Stefan Institute, Dept. of Physical and Organic Chemistry, Jamova 39, 1000 Ljubljana, Slovenia

Phone: +386 61 17 73 580

Fax: +386 61 17 73 811

Email: ivan.kobal@ijs.si

Home:

Address: Pod vrbami 7, 61000 Ljubljana, Slovenia

Biographical sketch

• born January 21, 1941, Vrhpolje, Vipava, Slovenia
• B.Sc. in Chemistry, Univ. Ljubljana, Slovenia, 1964
• M.Sc. in Chemistry, Univ. Ljubljana, Slovenia, 1968
• Ph.D. in Chemistry, Univ. Ljubljana, Slovenia, 1977
• head of the Dept. of Physical and Organic Chemistry

Areas of research

• radiochemistry, radioecology: radon, tritium
• chemical kinetics: kinetic isotope effects

Scientific cooperation with:

• University of Torino, Department of Physical, Inorganic and Materials Chemistry

Scientific publications:

• I. Kobal, J. Kristan: Determination of 222Rn concentration in hot spring waters using a scintilation chamber, Radiochem. Radional. Lett., 10, 291-295 (1972).

• I. Kobal, J. Kristan: Extension of Raghavaya's method for the determination of radon in water, Mikrochimica Acta, 219-224 (1973).

• J. Kristan, I. Kobal: A modified scintillation cell for the determination of radon in uranium mine atmosphere, Health Phys. 24, 103-104 (1973).

• I. Kobal, M. Shahin, J. Kristan, M. Senegacnik: Sorption emanation method for soluble radium in waters, Health Phys. 27, 381-384 (1974).

• M. Trontelj, D. Kolar, I. Kobal: Catalytic Activity of Uranium Oxides in CO Oxidation, Vest. Slov. Kem. Drus. 22, 69-76 (1975).

• I. Kobal, M. Senegacnik, H. Kobal: 13C and 14C kinetic isotope effects in the catalyt, oxidation of CO over NiO catalyt, J. Catal. 49, 1-7 (1977).

• I. Kobal, M. Senegacnik, B. Barlic: Activated complex in the catalytic oxidation of CO over NiO, J. Chem. Phys. 69(1), 174-181 (1978).

• I. Kobal, J. Kristan, M. Skofljanec, S. Jerancic, M. Ancik: Radioactivity of spring and surface waters in the region of the uranium ore deposit at Zirovski vrh, J. Radioanal. Chem. 44, 307-315 (1978).

• I. Kobal, J. Kristan, M. Ancik, S. Jerancic, M. Skofljanec: Radioactivity of thermal and mineral springs in Slovenia, Health Phys. 37, 239-242 (1979).

• P. Stegnar, I. Kobal, L. Kosta, V. Ravnik, M. Dermelj, A. R. Byrne: Radioecology of uranium and radium with special reference to a uranium mining area, IAEA-TECDOC 229 IAEA, Vienna (1980), str. 175.

• I. Kobal, M. Senegacnik, H. Kobal: 13C and 14C kinetic isotope effects in the catalytic oxidation of CO over ZnO, J. Chem. Phys. 78, 1815-1824 (1983).

• D. Brajnik, I. Kobal, M. Korun, U. Miklavzic: Technologically enhanced levels of natural radioactivity studied by gamma-ray spectrometry, Nucl. Instrum. Methods. Phys. Res. B17, 535-536 (1986).

• K. Juznic, I. Kobal: 90Sr and 14C measurements at the Institute ''Jozef Stefan'', Environmental Measurements Laboratory, Dpt. of Energy, New York (1986), EML-452, str. 34-37.

• I. Kobal, B. Smodis, M. Skofljanec: Radon-222 air concentrations in the Slovenian karst caves of Yugoslavia, Health Phys. 50, 830-834 (1986).

• I. Kobal, J. Burger, B. Smodis, M. Skofljanec: Koncentracija radona v zraku Slovenskih turisticnih kraskih jam, Nase jame 28, 11-17 (1986).

• K. Juznic, I. Kobal: Radiochemical determination of 210Po and 210Pb in water, J. Radioanal. Nucl. Chem, Articles 102, 493-498 (1986).

• K. Juznic, U. Miklavzic, M. Korun, I. Kobal, P. Stegnar: On the determination of Th-isotopes in minerals, Vest. Slov. Kem. Drus. 33, 257-263 (1987).

• I. Kobal, S. Fedina: Radiation doses at the Radenci health resort, Radiat. Prot. Dosim. 20, 257-259 (1987).

• I. Kobal, A. Renier: Radioactivity of the atomic spa at Podcetrtek, Slovenia, Yugoslavia, Health Phys. 53, 307-310 (1987).

• I. Kobal, B. Smodis, J. Burger, M. Skofljanec: Atmospheric 222Rn in tourist caves of Slovenia, Yugoslavia, Health Phys. 52, 473-479 (1987).

• D. Brajnik, M. Krizman, I. Kobal, P. Stegnar: Sources of technologically enhanced natural radioactivity and their impact in Slovenia (Yugoslavia), Radiat. Prot. Dosim. 24, 551-554 (1988).

• I. Kobal, M. Ancik, M. Skofljanec: Variations of 222Rn air concentration in Postojna Cave, Radiat. Prot. Dosim. 25, 207-211 (1988).

• I. Kobal, P. Hesleitner, E. Matijevic: Adsorption at solid/solution interfaces. 6. Interactions of Co2+ ions with spherical hematite particles, Colloids and Surf. 33, 167-174 (1988).

• I. Kobal, J. Vaupotic, J. Burger, P. Stegnar: Preliminary measurements of indoor radon in Ljubljana, Yugoslavia, Radiat. Prot. Dosim. 24, 547-550 (1988).

• M. Miletic, I. Kobal, T. Mohar: Computerized tritium measurements with a liquid scinitillation counter, Computers Chem. 12, 39-41 (1988).

• M. Mihailovic, I. Kobal, P. Stegnar: Atmospheric radon concentrations in dwellings in Slovenia, Sci. Total Environ. 70, 55-68 (1988).

• I. Kobal, J. Vaupotic, J. Burger: A method for determination of indoor radon concentrations using alpha-scintillation cells, Environ. Int. 14, 345-348 (1988).

• D. Mitic, I. Kobal: Statisticna obdelava podatkov o radioaktivnosti povrsinskih in podzemnih voda v Sloveniji, Vest. Slov. Kem. Drus. 36, 341-350 (1989).

• I. Kobal, M. Senegacnik: 13C and 14C kinetic isotope effects in the reduction of CO over an Mg surface, J. Chem. Soc. Faraday Trans., 86, 2283-2289 (1990).

• I. Kobal, J. Vaupotic, D. Mitic, J. Kristan, M. Ancik, S. Jerancic, M. Skofljanec: Natural radioactivity of fresh waters in Slovenia, Yugoslavia, Environ. Int., 16, 141-154 (1990).

• I. Kobal, J. Vaupotic, H. Udovc, J. Burger, B. Stropnik: Radon concentrations in the air of Slovene (Yugoslavia) underground mines, Environ. Int., 16, 171-173 (1990).

• I. Kobal, D. Brajnik, F. Kaluza, M. Vengust: Radionuklides in effluent from coal mines, a coal-fired plant, and a phosphate processing plant in Zasavje, Slovenia (Yugoslavia), Health Phys., 58(1), 81-85, (1990).

• J. Vaupotic, M. Ancik, M. Skofljanec, I. Kobal: Alpha scientillation cell for direct measurement of indoor radon, J. Environ. Sci. Health, A27(6), 1535-1540 (1992).

• A. Trkov, N. Ogrinc, I. Kobal: Modeling surface complexation at the colloid/electrolyte interface, Computers Chem., 16(4), 341-343 (1992).

• J. Vaupotic, M. Krizman, T. Sutej, M. Peternel, G. Djuric, D. Popovic, J. Planinic, Z. Faj, R. Kljajic, P. Stegnar, I. Kobal: Indoor radon concentrations in kindergartens from different regions in Yugoslavia, Radiat. Prot. Dosim., 45, 487-490 (1992).

• K. Poljanec, M. Hodoscek, I. Kobal: Ab initio calculations of Stationary Points on the Potential Energy Surface and Determination of Kinetic Isotope effects for the reaction of CO with Cu2O, Cluster Models for Surface and Bulk Phenomena, Edited by G. Pacchioni et al., Plenum Press, New York, 423- 432, 1992.

• K. Poljanec, J. Vernik, M. Hodoscek, I. Kobal, M. Senegacnik: Carbon kinetic isotope effects in the oxidation of CO over Cu2O, Vest. Slov. Kem. Drus. 39(2), 213-224 (1992).

• J. Planinic, I. Kobal, J. Vaupotic: Radon concentrations in kindergartens of Osijek and Ljubljana, J. Radioanal. Nucl. Chem., Letters, 175(2), 103-111 (1993).

• J. Planinic, J. Vaupotic, I. Kobal: Indoor radon concentrations in kindergartens, J. Environ. Radioactivity, 19, 167-171 (1993).

• J. Vaupotic, M. Szymula, J. Solecki, S. Chibowski, I. Kobal: Preliminary indoor radon investigations in Lublin, Poland, Health Phys., 64(4), 420-422 (1993).