• 1997 Faculty of Chemical Engineering and Technology University of Zagreb Engineer Chemistry, PhD
• 1993 Faculty of Chemical Engineering and Technology University of Zagreb Engineer Chemistry, M.Sc.
• 1987 Faculty of Technology University of Zagreb, B.Sc.

Books and book chapters

Book chapters

• L’Annunziata, M., Grahek, Ž. & Todorović, N. (2020) Cherenkov counting. U: L’Annunziata, M. (ur.) Handbook of Radioactivity Analysis. London, Academic Press is an imprint of Elsevier, str. 393-530 doi:10.1016/B978-0-12-814395-7.00006-4.

  doi

Journal articles

Scientific and review papers

• Tucaković, I., Karanović, G., Coha, I., Pavičić- Hamer, D. & Grahek, Ž. (2023) Radionuclides in commercial children's food consumed in Croatia. Food Control, 145, 109413, 6 doi:10.1016/j.foodcont.2022.109413.

  doi

• Coha, I., Smičiklas, Ivana, Tucaković, Ivana, Jović, M., Šljivić-Ivanović, M. & Grahek, Ž. (2022) Novel approach for strontium preconcentration from seawater and rapid determination of 89,90Sr in emergency situations. Talanta, 250, 123722, 7 doi:10.1016/j.talanta.2022.123722.

  doi

• Smičiklas, I., Coha, I., Jović, M., Nodilo, M., Šljivić-Ivanović, M., Smiljanić, S. & Grahek, Ž. (2021) Efficient separation of strontium radionuclides from high-salinity wastewater by zeolite 4A synthesized from Bayer process liquids. Scientific reports, 11 (1), 1738, 14 doi:10.1038/s41598-021-81255-y.

  doiwww.nature.comdoi.orgfulir.irb.hr

• Coha, I., Dulanská, S., Tucaković, I. & Grahek, Ž. (2021) Synergy of flow injection system and molecular recognition technology products for rapid determination of 89,90Sr and 210Pb. Talanta, 225, 121959, 11 doi:10.1016/j.talanta.2020.121959.

  doi

• Dulanská, S., Coha, I., Silliková, V., Goneková, Z., Horváthová, B., Nodilo, M. & Grahek, Ž. (2020) Sequential determination of 90Sr and 210Pb in bone samples using molecular recognition. Microchemical journal, 157, 105123, 7 doi:10.1016/j.microc.2020.105123.

  doi

• Stanić, G., Nikolov, J., Tucaković, I., Mrđa, D., Todorović, N., Grahek, Ž., Coha, I. & Vraničar, A. (2019) Angle vs. LabSOCS for HPGe efficiency calibration. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 920, 81-87 doi:10.1016/j.nima.2018.12.059.

  doi

• Grahek, Ž., Dulanská, S., Karanović, G., Coha, I., Tucaković, I., Nodilo, M. & Mátel, Ľ. (2018) Comparison of different methodologies for the 90 Sr determination in environmental samples. Journal of environmental radioactivity, 181, 18-31 doi:10.1016/j.jenvrad.2017.10.012.

  doi

• Tucaković, I., Barišić, D., Grahek, Ž., Kasap, A. & Širić, I. (2018) 137Cs in mushrooms from Croatia sampled 15 to 30 years after Chernobyl. Journal of environmental radioactivity, 181, 147-151 doi:10.1016/j.jenvrad.2017.11.004.

  doi

• Tucaković, I., Barišić, D. & Grahek, Ž. (2017) Application of mathematical calibrations in measurements of gamma emitting radionuclides in honey samples and borosilicate filters. Applied radiation and isotopes, 126, 162-164 doi:10.1016/j.apradiso.2017.02.016.

  doi

• Grahek, Ž., Breznik, B., Stojković, I., Coha, I., Nikolov, J. & Todorović, N. (2016) Measurement of tritium in the Sava and Danube Rivers. Journal of environmental radioactivity, 162-163, 56-67 doi:10.1016/j.jenvrad.2016.05.014.

  doi

• Coha, I., Neufuss, S., Grahek, Ž., Mojmír, Nodilo, M. & John, J. (2016) The effect of counting conditions on pure beta emitter determination by Cherenkov counting. Journal of radioanalytical and nuclear chemistry, 310 (2), 891-903 doi:10.1007/s10967-016-4853-y.

  doi

• Milanović, I. & Grahek, Ž. (2015) Semi-automated Procedure for the Determination of 89, 90Sr in Environmental Samples by Cherenkov Counting. Journal of radioanalytical and nuclear chemistry, 303 (2), 1453-1457 doi:10.1007/s10967-014-3614-z.

  doi

• Grahek, Ž., Milanović, I., Nodilo, M. & Rožmarić, M. (2013) Sequential separation of Fe and Sr from liquid samples by using Sr resin and rapid determination of 55Fe and 89, 90Sr. Applied radiation and isotopes, 81, 42-48 doi:10.1016/j.apradiso.2013.03.037.

  doi

• Grahek, Ž. & Nodilo, M. (2012) Continuous separation of Sr, Y and some actinides by mixed solvent anion exchange and determination of 89, 90Sr, 238, 239Pu and 241Am in soil and vegetation samples. Journal of radioanalytical and nuclear chemistry, 293 (3), 815-827 doi:10.1007/s10967-012-1740-z.

  doi

• Grahek, Ž., Karanović, G. & Nodilo, M. (2012) Rapid determination of 89, 90Sr in wide range of activity concentration by combination of yttrium, strontium separation and Cherenkov counting. Journal of radioanalytical and nuclear chemistry, 292 (2), 555-569 doi:10.1007/s10967-011-1441-z.

  doi

• Grahek, Ž., Gojmerac Ivšić, A., Krljan, N. & Nodilo, M. (2011) Separtion of Sr in combination of ion exchange and Sr resin with alcohol-nitric acid solution and rapid determination of 90Sr in wine and soil samples. Journal of radioanalytical and nuclear chemistry, 289 (2), 437-449.

• Rožmarić, M., Gojmerac Ivšić, A. & Grahek, Ž. (2009) Determination of uranium and thorium in complex samples using chromatographic separation, ICP-MS and spectrophotometric detection. Talanta, 80, 352-360 doi:10.1016/j.talanta.2009.06.078.

  doi

• Grahek, Ž., Košutić, K. & Rožmarić Mačefat, M. (2006) Strontium isolation from natural samples with Sr resin and subsequent determination of 90Sr. Journal of Radioanalytical and Nuclear Chemistry, 268 (2), 179-190.

• Grahek, Ž., Rožmarić Mačefat, M. & Lulić, S. (2006) Isolation of lead from water samples and determination of 210Pb. Analytica Chimica Acta, 560 (1/2), 84-93.

• Grahek, Ž. & Rožmarić Mačefat, M. (2005) Extraction chromatographic separation of iron from complex liquid samples and the determination of 55Fe. Journal of Radioanalytical and Nuclear Chemistry, 267 (1), 131-137.

• Grahek, Ž. & Rožmarić Mačefat, M. (2005) Determination of radioactive strontium in seawater. Analytica chimica acta, 534 (2), 271-279.

• Grahek, Ž. & Rožmarić Mačefat, M. (2004) Isolation of iron and strontium from liquid samples and determination of 55Fe and 89, 90Sr in liquid radioactive waste.. Analytica chimica acta, 511 (2), 339-348.

• Sofilić, T., Barišić, D., Grahek, Ž., Cerjan-Stefanović, Š., Rastovčan-Mioč, A. & Mioč, B. (2004) Radionuclides in metallurgical products and waste. Acta metallurgica Slovaca, 10 (1), 29-35.

• Grahek, Ž. (2001) Calcium-strontium separation by means of mixed solvent anion exchange. Journal of Radioanalytical and Nuclear Chemistry, 247 (2), 297-305.

• Grahek, Ž., Eškinja, I., Košutić, K. & Cerjan-Stefanović, Š. (2000) Isolation of yttrium and strontium from soil samples and rapid determination of 90Sr. Croatica chemica acta, 73 (3), 795-807.

• Grahek, Ž., Eškinja, I., Košutić, K., Lulić, S. & Kvastek, K. (1999) Isolation of radioactive strontium from natural samples : a semi-automatic procedure. Journal of radioanalytical and nuclear chemistry, 241 (3), 617-626.

• Grahek, Ž., Košutić, K. & Lulić, S. (1999) Improved method for radioactive strontium isolation from various samples by means of mixed solvent anion exchange. Journal of radioanalytical and nuclear chemistry, 242 (1), 33-40.

• Grahek, Ž., Zečević, N. & Lulić, S. (1999) Possibility of rapid determination low-level 90Sr activity by combination of extraction chromatography separation and Cherenkov counting. Analytica chimica acta, 399 (3), 237-247.

• Grahek, Ž., Eškinja, I., Košutić, K., Lulić, S. & Kvastek, K. (1999) Isolation of radioactive strontium from natural samples : separation of strontium from alkaline and alkaline earth elements by means of mixed solvent anion exchange. Analytica chimica acta, 379 (1-2), 107-119.

• Filipović-Vinceković, N., Juranović, I. & Grahek, Ž. (1997) Interactions in a Binary Mixture of Cationic Surfactants. Colloids and surfaces. A, Physicochemical and engineering aspects, 125 (2-3), 115-120.

• Grahek, Ž., Lukić, S., Košutić, K., Eškinja, I. & Cerjan-Stefanović, Š. (1995) Separation of Radioactive Strontium from Natural Samples by means of Mixed-solvent Anion Exchange. Journal of radioanalytical and nuclear chemistry, 189 (1), 141-146 doi:10.1007/BF02040192.

  doi

• Dragčević, Đ., Bujan, M., Grahek, Ž. & Filipović-Vinceković, N. (1995) Adsorption at the air/water interface in dodecylammonium chloride/sodium dodecyl sulfate mixtures. Colloid and polymer science, 273 (10), 967-973 doi:10.1007/BF00660375.

  doi

• Grahek, Ž., Eškinja, I., Cerjan-Stefanović, Š., Kvastek, K. & Lulić, S. (1994) Separation of Stroncium from Calcium by means of Anion Exchanger and Alcoholic Solution of Nitric Acid. Journal of radioanalytical and nuclear chemistry, 182 (2), 401-413 doi:10.1007/BF02037517.

  doi

Conference proceedings papers

Scientific conference proceedings papers

• Coha, I., Karanović, G. & Grahek, Ž. (2019) Cherenkov effect in determination of 89, 90Sr. U: Jović, M. & Pantelić, G. (ur.)Zbornik radova : XXX simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore.

  drive.google.com

• Coha, I., Smičiklas, I., Grahek, Ž., Šljivić Ivanović, M. & Jović, M. (2019) New materials for separation of radioactive strontium from the sea water. U: Jović, M. & Pantelić, G. (ur.)Zbornik radova : XXX simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore.

  drive.google.com

• Nodilo, M., Karanović, G. & Grahek, Ž. (2013) Uncertainty and detection limit in determination of 89, 90Sr by Cherenkov counting. U: Knežević, Ž., Majer, M. & Krajcar Bronić, I. (ur.)Zbornik radova 9. simpozija Hrvatskog društva za zaštitu od zračenja.

• Milanović, I., Nodilo, M. & Grahek, Ž. (2013) Gross alpha and gross beta activity determination in liquid samples: methodology and results interpretation. U: Knežević, Ž., Majer, M. & Krajcar Bronić, I. (ur.)Zbornik radova 9. simpozija Hrvatskog društva za zaštitu od zračenja.

• Rožmarić Mačefat, M., Gojmerac Ivšić, A., Grahek, Ž. & Barišić, D. (2008) Determination of uranium and thorium in drinking and seawater. U: Barišić, D., Grahek, Ž., Krajcar Bronić, I. & Miljanić, S. (ur.)Zbornik radova Sedmog simpozija Hrvatskog društva za zaštitu od zračenja.

• Košutić, K., Grahek, Ž., Rožmarić Mačefat, M. & Lulić, S. (2005) Influence of matrix on method selection for radioactive strontium isolation. U: Garaj-Vrhovac, V., Kopjar, N. & Miljanić, S. (ur.)Zbornik radova Šestog simpozija Hrvatskog društva za zaštitu od zračenja.

• Rožmarić Mačefat, M., Grahek, Ž. & Lulić, S. (2005) Determination of 89, 90Sr in seawater. U: Garaj-Vrhovac, V., Kopjar, N. & Miljanić, S. (ur.)Zbornik radova Šestog simpozija Hrvatskog društva za zaštitu od zračenja.

• Rastovčan-Mioč, A., Sofilić, T., Cerjan-Stefanović, Š., Grahek, Ž. & Mioč, B. (2003) Radioactive substances in metallurgicial waste. U: Krajcar Bronić, I., Miljanić, S. & Obelić, B. (ur.)Zbornik radova Petog simpozija Hrvatskog društva za zaštitu od zračenja.

• Košutić, K., Grahek, Ž. & Lulić, S. (2003) Some critical point on 90Sr determination. U: unknown (ur.)Proceedings (CD ROM: ISBN 80 88806-43-7).

• Grahek, Ž. & Košutić, K. (2003) Novel methods for isolation and determination of alpha and beta emitters. U: Krajcar Bronić, I., Miljanić, S. & Obelić, B. (ur.)Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja, 2003.

• Grahek, Ž. & Košutić, K. (2003) Determination of low-level activity of 90Sr(90Y) by Cherenkov counting. U: Krajcar Bronić, I., Miljanić, S. & Obelić, B. (ur.)Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja, 2003.

• Lulić, S., Mikelić, L. & Grahek, Ž. (2003) Determination Fe-55 in water samples. U: Krajcar Bronić, I., Miljanić, S. & Obelić, B. (ur.)Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja.

• Sofilić, T., Rastovčan-Mioč, A., Cerjan-Stefanović, Š. & Grahek, Ž. (2001) The Presence of Radionuclides in Steel Scrap, Crude Steel, Electric Furnace Slag, and Dust. U: Grilec, K. (ur.)MATRIB 2001.

• Košutić, K., Grahek, Ž. & Lulić, S. (1999) Determination of 90-Sr in the wine samples. U: Sandor Deme (ur.)Proceedings of IRPA Regional Congres on Radiation Protection in Central Europe.

• Lulić, S., Košutić, K., Grahek, Ž., Vertačnik, A. & Černugelj, J. (1999) Impact of Krško NPP and City of Zagreb on the Sava river Radioactivity Level. U: 2. Hrvatska konferencija o vodama, Hrvatske vode od Jadrana do Dunava. (https://www.bib.irb.hr/37225).

• Grahek, Ž., Eškinja, I., Košutić, K. & Lulić, S. (1998) Rapid method for the 90Sr determination in soil samples. U: Simon Jerome (ur.)Rapid radioactivity measurements in emergency and routine situations.

• Košutić, K., Grahek, Ž. & Lulić, S. (1998) Critical review on 90-Sr determination. U: Obelić, B. & Franić, Z. (ur.)Zbornik radova IV. simpozija HDZZ.

• Grahek, Z., Košutic, K. & Lulic, S. (1997) Modern methods for radiostrontium determination. U: Sabol, J. (ur.)Proceedings of the IRPA Regional Symposium on Radiation Protection in Neighbouring Countries of Central Europe 1997.

• Košutic, K., Grahek, Z. & Lulic, S. (1997) Study of Cs-137 and Sr-90 radioactivity level in ground water and surface water in the surroundings of Zagreb. U: Sabol, J. (ur.)Proceedings of the IRPA Regional Symposium on Radiation Protection in Neighbouring Countries of Central Europe 1997.

• Grahek, Z., Košutic, K. & Lulic, S. (1996) Rapid method for the radioactive strontium determlnation in natural samples. U: Kubelka, D. & Kovač, J. (ur.)Zbornik radova Treceg simpozija Hrvatskoga društva za zaštitu od zracenja = Proceedings of the Symposium of the Croatian Radiation Protection Association.

Theses

Doctoral dissertation

• Grahek, Ž. (1997) 'Isolation of radioactive strontium from natural samples', doktorska disertacija, Fakultet kemijskog inženjerstva i tehnologije, Zagreb.

• Grahek, Ž. (1997) 'Isolation of radioactive strontium from natural samples', doktorska disertacija, Fakultet kemijskog inženjerstva i tehnologije, Zagreb.

• Member of Croatian Radiation Protection Association