• 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.

• The Pelješac Peninsula - a natural laboratory for research on the dynamics of natural and artificial radionuclides in the environment - PP-LabNAR

  05.12.2025 - 04.12.2028 | 200,000.00 EUR

  CroRISIRB

• Innovative clinical nutrition formulations

  16.12.2020 - 15.12.2023 | 6,103,178.68 HRK

  CroRISIRB

• Radionuclides in children food and novel methods for low level activity determination - RiChFALL

  01.02.2020 - 31.01.2024 | 125,423.05 EUR

  CroRISIRB

Conference proceedings

• Proceedings of the Seventh Symposium of the Croatian Radiation Protection Association / Zbornik radova Sedmog simpozija Hrvatskog društva za zaštitu od zračenja / Barišić, Delko ; Grahek, Željko ; Krajcar Bronić, Ines et al. (ur.). Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2008

Original scientific paper

• L’Annunziata, Michael F. ; Grahek, Željko ; Todorović, Nataša | Cherenkov counting // Handbook of Radioactivity Analysis. | London : Delhi: Academic Press ; Elsevier, 2020. str. 393-530 . doi: 10.1016/B978-0-12-814395-7.00006-4

  doiwww.sciencedirect.comdoi.org

Original scientific paper

• Magdić Košiček, Katja; Benedik, Ljudmila; Nečemer, Marijan; Vodenik, Branko; Zorko, Benjamin; Grahek, Željko; Tucaković, Ivana | Gamma spectrometry coupled with electrodeposition for 55Fe determination in solid samples containing significant amount of total iron // Journal of radioanalytical and nuclear chemistry, 334 (2025), 6; 3969-3976. doi: 10.1007/s10967-025-10159-2

  doilink.springer.com

• Ilievski, Tomislav; Skoko, Božena; Karanović, Gorana; Grahek, Željko; Magdić Košiček, Katja; Coha, Ivana; Pavičić-Hamer, Dijana; Tucaković, Ivana | Radioactivity in food crops from the family farms in Croatia with ingestion dose assessment // Food control, 167 (2025), 110805, 1. doi: 10.1016/j.foodcont.2024.110805

  doiwww.sciencedirect.comfulir.irb.hr

• Skoko, Božena; Magdić Košiček, Katja; Ilievski, Tomislav; Karanović, Gorana; Grahek, Željko; Coha, Ivana; Pavičić-Hamer, Dijana; Tucaković, Ivana | Radionuclides determination by alpha (210Po, 228,230,232Th) and gamma (226,228Ra, 137Cs, 40K) spectrometry in children's food in Croatia with assessment of cumulative ingestion dose for infants // Journal of food composition and analysis, 136 (2024), 106828, 21. doi: 10.1016/j.jfca.2024.106828

  doiwww.sciencedirect.com

• Topolovac, Željka; Tucaković, Ivana; Barišić, Delko; Grahek, Željko; Bermanec, Vladimir | Nuclear forensics case in Croatia: elevated U and Ra radioactive material found at Karasovići border // Journal of radioanalytical and nuclear chemistry, 333 (2024), 847-852. doi: 10.1007/s10967-023-09286-5

  doilink.springer.com

• Grahek, Željko; Coha, Ivana; Tucaković, Ivana | Radiostrontium determination by combination of automated Sr isolation and “on-column” Cherenkov detection using chromatographic model // Journal of Chromatography A, 2023 (2023), 464276, 13. doi: 10.1016/j.chroma.2023.464276

  doiwww.sciencedirect.com

• Tucaković, Ivana ; Karanović, Gorana ; Coha, Ivana ; Pavičić- Hamer, Dijana ; Grahek, Željko | Radionuclides in commercial children's food consumed in Croatia // Food control, 145 (2023), 109413, 6. doi: 10.1016/j.foodcont.2022.109413

  doiwww.sciencedirect.com

• Smječanin, Narcisa ; Nuhanović, Mirza ; Sulejmanović, Jasmina ; Grahek, Željko ; Odobašić, Amra | Study of uranium biosorption process in aqueous solution by red beet peel // Journal of radioanalytical and nuclear chemistry, 331 (2022), 3; 1459-1471. doi: 10.1007/s10967-022-08192-6

  doilink.springer.com

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

  doiwww.sciencedirect.comdoi.org

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

  doiwww.sciencedirect.comdoi.org

• Smičiklas, Ivana ; Coha, Ivana ; Jović, Mihajlo ; Nodilo, Marijana ; Šljivić-Ivanović, Marija ; Smiljanić, Slavko ; Grahek, Željko | Efficient separation of strontium radionuclides from high-salinity wastewater by zeolite 4A synthesized from Bayer process liquids // Scientific reports, 11 (2021), 1; 1738, 14. doi: 10.1038/s41598-021-81255-y

  doiwww.nature.comdoi.orgfulir.irb.hr

• Dulanská, Silvia ; Coha, Ivana ; Silliková, Veronika ; Goneková, Zuzana ; Horváthová, Bianka ; Nodilo, Marijana ; Grahek, Željko | Sequential determination of 90Sr and 210Pb in bone samples using molecular recognition // Microchemical journal, 157 (2020), 105123, 7. doi: 10.1016/j.microc.2020.105123

  doiwww.sciencedirect.comfulir.irb.hr

• Stanić, Goran ; Nikolov, Jovana ; Tucaković, Ivana ; Mrđa, Dušan ; Todorović, Nataša ; Grahek, Željko ; Coha, Ivana ; Vraničar, Andrej | Angle vs. LabSOCS for HPGe efficiency calibration // Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 920 (2019), 81-87. doi: 10.1016/j.nima.2018.12.059

  doiwww.sciencedirect.comdoi.org

• Grahek, Željko ; Dulanská, Silvia ; Karanović, Gorana ; Coha, Ivana ; Tucaković, Ivana ; Nodilo, Marijana ; Mátel, Ľubomír | Comparison of different methodologies for the 90 Sr determination in environmental samples // Journal of environmental radioactivity, 181 (2018), 18-31. doi: 10.1016/j.jenvrad.2017.10.012

  doiwww.sciencedirect.com

• Tucaković, Ivana ; Barišić, Delko ; Grahek, Željko ; Kasap, Ante ; Širić, Ivan | 137Cs in mushrooms from Croatia sampled 15 to 30 years after Chernobyl // Journal of environmental radioactivity, 181 (2018), 147-151. doi: 10.1016/j.jenvrad.2017.11.004

  doiwww.sciencedirect.com

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

  doiwww.sciencedirect.comdoi.org

• Grahek, Željko ; Breznik, Borut ; Stojković, Ivana ; Coha, Ivana ; Nikolov, Jovana ; Todorović, Nataša | Measurement of tritium in the Sava and Danube Rivers // Journal of environmental radioactivity, 162-163 (2016), 56-67. doi: 10.1016/j.jenvrad.2016.05.014

  doiwww.sciencedirect.comdx.doi.org

• Coha, Ivana ; Neufuss, Soběslav ; Grahek, Željko ; Mojmír ; Nodilo, Marijana ; John, Jan | The effect of counting conditions on pure beta emitter determination by Cherenkov counting // Journal of radioanalytical and nuclear chemistry, 310 (2016), 2; 891-903. doi: 10.1007/s10967-016-4853-y

  doilink.springer.com

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

  doilink.springer.com

• Grahek, Željko ; Milanović, Ivana ; Nodilo, Marijana ; Rožmarić, Martina | 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 (2013), 42-48. doi: 10.1016/j.apradiso.2013.03.037

  doidx.doi.orgwww.sciencedirect.com

• Grahek, Željko ; Nodilo, Marijana | 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 (2012), 3; 815-827. doi: 10.1007/s10967-012-1740-z

  doilink.springer.com

• Grahek, Željko ; Karanović, Gorana ; Nodilo, Marijana | 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 (2012), 2; 555-569. doi: 10.1007/s10967-011-1441-z

  doilink.springer.com

• Grahek, Željko ; Gojmerac Ivšić, Astrid ; Krljan, Nikolina ; Nodilo, Marijana | 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 (2011), 2; 437-449

  link.springer.com

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

  doiwww.sciencedirect.comdoi.org

• Grahek, Željko ; Košutić, Katarina ; Rožmarić Mačefat, Martina | Strontium isolation from natural samples with Sr resin and subsequent determination of 90Sr // Journal of radioanalytical and nuclear chemistry, 268 (2006), 2; 179-190-x

• Grahek, Željko ; Rožmarić Mačefat, Martina ; Lulić, Stipe | Isolation of lead from water samples and determination of 210Pb // Analytica chimica acta, 560 (2006), 1/2; 84-93-x

  www.sciencedirect.com

• Grahek, Željko ; Rožmarić Mačefat, Martina | Extraction chromatographic separation of iron from complex liquid samples and the determination of 55Fe // Journal of radioanalytical and nuclear chemistry, 267 (2005), 1; 131-137-x

• Grahek, Željko ; Rožmarić Mačefat, Martina | Determination of radioactive strontium in seawater // Analytica chimica acta, 534 (2005), 2; 271-279-x

  www.sciencedirect.com

• Grahek, Željko ; Rožmarić Mačefat, Martina | Isolation of iron and strontium from liquid samples and determination of 55Fe and 89, 90Sr in liquid radioactive waste. // Analytica chimica acta, 511 (2004), 2; 339-348-x

  www.sciencedirect.com

• Sofilić, Tahir ; Barišić, Delko ; Grahek, Željko ; Cerjan-Stefanović, Štefica ; Rastovčan-Mioč, Alenka ; Mioč, Boris | Radionuclides in metallurgical products and waste // Acta metallurgica Slovaca, 10 (2004), 1; 29-35-x

• Grahek, Željko | Calcium-strontium separation by means of mixed solvent anion exchange // Journal of radioanalytical and nuclear chemistry, 247 (2001), 2; 297-305

• Grahek, Željko ; Eškinja, Ivan ; Košutić, Katarina ; Cerjan-Stefanović, Štefica | Isolation of yttrium and strontium from soil samples and rapid determination of 90Sr // Croatica chemica acta, 73 (2000), 3; 795-807-x

• Grahek, Željko ; Zečević, Nenad ; Lulić, Stipe | Possibility of rapid determination low-level 90Sr activity by combination of extraction chromatography separation and Cherenkov counting // Analytica chimica acta, 399 (1999), 3; 237-247-x

• Grahek, Željko ; Košutić, Katarina ; Lulić, Stipe | Improved method for radioactive strontium isolation from various samples by means of mixed solvent anion exchange // Journal of radioanalytical and nuclear chemistry, 242 (1999), 1; 33-40-x

• Grahek, Željko ; Eškinja, Ivan ; Košutić, Katarina ; Lulić, Stipe ; Kvastek, Krešimir | Isolation of radioactive strontium from natural samples : a semi-automatic procedure // Journal of radioanalytical and nuclear chemistry, 241 (1999), 3; 617-626-x

• Grahek, Željko ; Eškinja, Ivan ; Košutić, Katarina ; Lulić, Stipe ; Kvastek, Krešimir | 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 (1999), 1-2; 107-119-x

• Filipović-Vinceković, Nada ; Juranović, Iva ; Grahek, Željko | Interactions in a Binary Mixture of Cationic Surfactants // Colloids and surfaces. A, Physicochemical and engineering aspects, 125 (1997), 2-3; 115-120

• Dragčević, Đurđica ; Bujan, Marija ; Grahek, Željko ; Filipović-Vinceković, Nada | Adsorption at the air/water interface in dodecylammonium chloride/sodium dodecyl sulfate mixtures // Colloid and polymer science, 273 (1995), 10; 967-973. doi: 10.1007/BF00660375

  doilink.springer.com

• Grahek, Željko ; Lukić, S. ; Košutić, Krešimir ; Eškinja, Ivan ; Cerjan-Stefanović, Štefica | Separation of Radioactive Strontium from Natural Samples by means of Mixed-solvent Anion Exchange // Journal of radioanalytical and nuclear chemistry, 189 (1995), 1; 141-146. doi: 10.1007/BF02040192

  doispringerlink3.metapress.comwww.springerlink.com

• Grahek, Željko ; Eškinja, Ivan ; Cerjan-Stefanović, Štefica ; Kvastek, Krešimir ; Lulić, Stjepan | Separation of Stroncium from Calcium by means of Anion Exchanger and Alcoholic Solution of Nitric Acid // Journal of radioanalytical and nuclear chemistry, 182 (1994), 2; 401-413. doi: 10.1007/BF02037517

  doilink.springer.comakademiai.com

Professional paper

• Sekulić, Bogdan ; Grahek, Željko ; Rožmarić Mačefat, Martina ; Peharec, Željko | Usporedna mjerenja teških metala u organskim i anorganskim uzorcima // EGE : energetika, gospodarstvo, ekologija, etika, 1 (2002), 116-120

• Sofilić, Tahir ; Rastovčan-Mioč, Alenka ; Cerjan-Stefanović, Štefica ; Grahek, Željko | Opravdanost praćenja prisutnosti radionuklida u čeličnom otpadu i sirovom čeliku // Strojarstvo : časopis za teoriju i praksu u strojarstvu, 43 (2001), 4-6; 203-209-x

Review article (scientific)

• Mitrović, Branislava M.; Ostojić, Dragana; Pantelić, Gordana; Zorko, Benjamin; Stepišnik, Matjaž; Kožar Logar, Jasmina; Omahen, Gregor; Škrlep, Matija; Grahek, Željko; Karanović, Gorana et al. | Natural and Artificial Radionuclides in the Sediment, Water, and Fish Samples from the Sava River in Serbia, Slovenia and Croatia: Comparing Past and Recent Findings // Soil & sediment contamination, 34 (2025), 8; 2548-2566. doi: 10.1080/15320383.2025.2508729

  doiwww.tandfonline.com

Letter to the editor

• Žunić, Josip; Baršić, Bruno; Husedžinović; Sutlić, Željko; Karanović, Nenad; Nesek-Adam, Višnja; Svetina, Lucija; Vukić, Veljko; Grahek, Željko; Frančišković-Bilinski, Stanislav et al. | Conclusions of the Symposium Disaster Medicine – Are We Ready? // Liječnički vjesnik : glasilo Hrvatskoga liječničkog zbora, 145 (2023), 1-2; 58-59. doi: 10.26800/lv-145-1-2-9

  doilijecnicki-vjesnik.hlz.hr

Original scientific paper

• Coha, Ivana ; Karanović, Gorana ; Grahek, Željko | Čerenkovljev efekt u određivanju 89, 90Sr // Zbornik radova : XXX simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore. | Beograd: Institut za nuklearne nauke "Vinča" , Društvo za zaštitu od zračenja Srbije i Crne Gore, 2019. str. 337-343

  drive.google.com

• Coha, Ivana ; Smičiklas, Ivana ; Grahek, Željko ; Šljivić Ivanović, Marija ; Jović, Mihajlo | Novi materijali za separaciju radioaktivnog stroncijuma iz morske vode // Zbornik radova : XXX simpozijum Društva za zaštitu od zračenja Srbije i Crne Gore. | Beograd: Institut za nuklearne nauke, 2019. str. 330-336

  drive.google.com

• Nodilo, Marijana ; Karanović, Gorana ; Grahek, Željko | Procjena mjernih nesigurnosti i granica detekcije kod određivanja 89, 90Sr Čerenkovljevim brojenjem // Zbornik radova 9. simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2013. str. 489-494

• Milanović, Ivana ; Nodilo, Marijana ; Grahek, Željko | Metodologija i interpretacija rezultata određivanja ukupne alfa i beta aktivnosti u tekućim uzorcima // Zbornik radova 9. simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2013. str. 483-488

• Rožmarić Mačefat, Martina ; Gojmerac Ivšić, Astrid ; Grahek, Željko ; Barišić, Delko | Određivanje uranija i torija u pitkoj i morskoj vodi // Zbornik radova Sedmog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Denona, 2008. str. 248-253

• Košutić, Katarina ; Grahek, Željko ; Rožmarić Mačefat, Martina ; Lulić, Stipe | Utjecaj matriksa na odabir metode izolacije radioaktivnog stroncija // Zbornik radova Šestog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb, 2005. str. 420-424-x

• Rožmarić Mačefat, Martina ; Grahek, Željko ; Lulić, Stipe | Određivanje 89, 90Sr u morskoj vodi // Zbornik radova Šestog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb, 2005. str. 379-383-x

• Rastovčan-Mioč, Alenka ; Sofilić, Tahir ; Cerjan-Stefanović, Štefica ; Grahek, Željko ; Mioč, Boro | Radioactive substances in metallurgicial waste // Zbornik radova Petog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2003. str. 317-322

• Košutić, Katarina ; Grahek, Željko ; Lulić, Stipe | Some critical point on 90Sr determination // Proceedings (CD ROM: ISBN 80 88806-43-7). | Bratislava: unknown, 2003. str. CD ROM-x

• Grahek, Željko ; Košutić, Katarina | Pregled novih metoda izolacije i određivanja alfa i beta emitera // Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja, 2003. | Zagreb, 2003. str. 284-289-x

• Grahek, Željko ; Košutić, Katarina | Određivanje niskih aktivnosti 90Sr(90Y) Čerenkovljevim brojenjem // Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja, 2003. | Zagreb, 2003. str. 278-283-x

• Lulić, Stipe ; Mikelić, Luka ; Grahek, Željko | Određivanje radioaktivnog Fe-55 iz WMT-a NE Krško // Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb, 2003. str. 273-276-x

• Sofilić, Tahir ; Rastovčan-Mioč, Alenka ; Cerjan-Stefanović, Štefica ; Grahek, Željko | Prisutnost radionuklida u čeličnom otpadu, sirovom čeliku, elektropećnoj troski i prašini // MATRIB 2001. | Zagreb: Hrvatsko društvo za materijale i tribologiju (HDMT), 2001. str. 227-231

• Košutić, Katarina ; Grahek, Željko ; Lulić, Stipe | Determination of 90-Sr in the wine samples // Proceedings of IRPA Regional Congres on Radiation Protection in Central Europe. | Budimpešta: Health Physics Section, Roland Eotvos Physical Society, 1999. str. 354-357-x

• Lulić, Stipe ; Košutić, Katarina ; Grahek, Željko ; Vertačnik, Astrea ; Černugelj, Josip | UTJECAJ NE KRŠKO I GRADA ZAGREBA NA RADIOAKTIVNOST RIJEKE SAVE // 2. Hrvatska konferencija o vodama, Hrvatske vode od Jadrana do Dunava. | Zagreb: Hrvatske vode, 1999. str. 945-952-x

• Grahek, Željko ; Eškinja, Ivan ; Košutić, Katica ; Lulić, Stipe | Rapid method for the 90Sr determination in soil samples // Rapid radioactivity measurements in emergency and routine situations. | Teddington: National Physical Laboratory, 1998. str. 119-127-x

• Košutić, Katarina ; Grahek, Željko ; Lulić, Stipe | Kritički osvrt na određivanje 90-Sr // Zbornik radova IV. simpozija HDZZ. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 1998. str. 195-199-x

• Košutic, Katarina ; Grahek, Zeljko ; Lulic, Stipe | Study of Cs-137 and Sr-90 radioactivity level in ground water and surface water in the surroundings of Zagreb // Proceedings of the IRPA Regional Symposium on Radiation Protection in Neighbouring Countries of Central Europe 1997. | Prag: Faculty of Nucl. Sci.and Phys. Eng, Czech Tech. Univ. Prague, 1997. str. 407-410-x

• Grahek, Zeljko ; Košutic, Katarina ; Lulic, Stipe | Modern methods for radiostrontium determination // Proceedings of the IRPA Regional Symposium on Radiation Protection in Neighbouring Countries of Central Europe 1997. | Prag: Faculty of Nucl. Sci.and Phys. Eng, Czech Tech. Univ. Prague, 1997. str. 528-530-x

• Grahek, Zeljko ; Košutic, Katarina ; Lulic, Stipe | Brza metoda za određivanje radioaktivnog stroncija u prirodnim uzorcima = Rapid method for the radioactive strontium determlnation in natural samples // Zbornik radova Treceg simpozija Hrvatskoga društva za zaštitu od zracenja = Proceedings of the Symposium of the Croatian Radiation Protection Association. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 1996. str. 317-322-x

Conference abstract

• Coha, Ivana; Karanović, Gorana; Štrok, Marko; Kožar Logar, Jasmina; Zorko, Benjamin; Volčanšek, Aleš; Znidaršić, Jasmina; Novak Danijel; Tucaković, Ivana; Grahek, Željko | Retrospective overview of the results of radionuclide measurements in the liquid radioactive discharges of the Krško Nuclear Power Plant and the Sava River water // th Asia-Pacific Symposium on Radiochemistry Book of Abstracts. | The Japan Society of Nuclear and Radiochemical Sciences, 2025, R7-06, 1

• Coha, Ivana; Kavasi, Norbert; Štrok, Marko; Rovan, Leja; Seif, Dorice; Jagodić Hudobivnik; Marta, Grahek, Željko; | Rapid Determination of Uranium isotopes and Ra-226 in Water Samples Using ICP-QQQ-MS // th Asia-Pacific Symposium on Radiochemistry Book of Abstracts. | The Japan Society of Nuclear and Radiochemical Sciences, 2025, P2-10, 1

• Ilievski, Tomislav; Tucaković, Ivana; Skoko, Božena; Coha, Ivana; Karanović, Gorana; Grahek, Željko; Smičiklas, Ivana; Magdić Košiček, Katja; Barišić, Delko; Pavičić-Hamer, Dijana | Radioactivity in agricultural crops and soils from the family farms in Croatia // ENVIRA 2023, 7th International Conference on Environmental Radioactivity "New challenges in the determination of environmental radioactivity". | Sevilla: University of Seville, 2023. str. 262.-262

  us.ticmeet.com

• Coha, Ivana ; Grahek, Željko ; Poiškruh, Klara ; Kožar Logar, Jasmina | Međulaboratorijske usporedbe određivanja ukupne alfa i ukupne beta aktivnosti u vodi – iskustva i rezultati laboratorija za radioekologiju Instituta Ruđer Bošković i Odsjeka za fiziku niskih i srednjih energija Instituta Jožef Stefan // Zbornik sažetaka trinaestog Simpozija Hrvatskog društva za zaštitu od zračenja / Petrinec, Branko; Pavelić, Luka; Popić, Jelena et al. (ur.). | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2023. str. 143-144

  simpozij13.hdzz.hr

• Tucaković, Ivana ; Karanović, Gorana ; Coha, Ivana ; Pavičić-Hamer, Dijana ; Grahek, Željko ; Skoko, Božena ; Ilievski, Tomislav | Determination of radionuclides in commercial children's food consumed in Croatia / Određivanje radionuklida u komercijalnoj dječjoj hrani korištenoj u Hrvatskoj // Zbornik sažetaka trinaestog Simpozija Hrvatskog društva za zaštitu od zračenja / Petrinec, Branko; Pavelić, Luka; Popić, Jelena et al. (ur.). | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2023. str. 64-65

  www.hdzz.hr

• Coha, Ivana ; Smičiklas, Ivana ; Nodilo, Marijana ; Tucaković, Ivana ; Ivković, Martina ; Grahek, Željko | Novel approach for strontium preconcentration from seawater // Book of Abstracts - RANC - 2nd International Conference on Radioanalytical and Nuclear Chemistry. | 2019. str. 115-115

  www.chemistryviews.org

• Dulanská, Silvia ; Nodilo, Marijana ; Rajec, Pavol ; Mátel, Ľubomír ; Grahek, Željko ; Tucaković, Ivana | Determination of important radionuclides in soil samples from the Island of Mljet, Croatia // ENVIRA 2017 : Book of abstracts. | Vilnius, 2017. str. 239-239

• Nodilo, Marijana ; Dulanská, Silvia ; Mátel, Ľubomír ; Grahek, Željko | Subsequent determination of 90Sr and 210Pb in goat bones samples from Island of Mljet, Croatia // LSC2017, An International conference on advances in Liquid Scintillation Spectrometry : Abstract Book. | Kopenhagen, 2017, ID245, 2

  lsc2017.nutech.dtu.dk

• Grahek, Željko ; Coha, Ivana | An Analitical Solution of Non‐linear Equation of Chromatography and Its Application in Determination of Radioactive Strontium. // Tenth International Conference on Methods and Applications of Radioanalytical Chemistry. | 2015

  www.marcconference.org

• Coha, Ivana ; Grahek, Željko | On Column Cherenkov Detection of Sr-89, 90 // Tenth International Conference on Methods and Applications of Radioanalytical Chemistry. | 2015. str. 35-35

  www.marcconference.org

• Karanović, Gorana; Milanović, Ivana; Grahek Željko | Simultaneous use of anion exchanger and Sr resin for efficient strontium isolatin from complex matrices // 4th International Nuclear Chemistry Congress. | São Paulo, 2014. str. 182-182

• Milanović, Ivana ; Grahek, Željko | Semi-automated Procedure for Rapid Determination of 90Sr in Water Samples by Cherenkov Counting // 17th Radiochemical Conference - Booklet of Abstacts. | 2014

• Milanović, Ivana ; Grahek Željko | Semi-automated procedure for the determination of 89, 90Sr in environmental samples by Cherenkov counting // APSORC'13 - 5th Asia-Pacific Symposium on Radiochemistry. | 2013

• Nodilo, Marijana ; Milanović, Ivana ; Grahek, Željko | Determination of 55Fe and 89, 90Sr in liquid samples using Sr and/or Pb resins for the mutual separation of Fe and Sr // 5th Asia-Pacific Symposium on Radiochemistry APSORC 13 Book of Abstracts. | 2013. str. 23-ENP-01-x

• Grahek, Željko ; Nodilo, Marijana | Sequential separation of Y, Sr, Pu and Am by mixed solvent anion exchange and determination of 89, 90Sr, 241Am and 238, 239Pu // Abstracts of ICRM-LLRMT'12. | 2012. str. P-013-x

• Grahek, Željko ; Nodilo, Marijana | Sequential separation of Fe and Sr from liquid samples by using Sr resin and rapid determination of 55Fe and 89, 90Sr // Abstracts of ICRM-LLRMT'12. | 2012. str. O-012-x

• Rožmarić Mačefat, Martina ; Grahek, Željko | Elektrostatska sorpcija kationa na anionske izmjenjivače i njena primjena u određivanju radionuklida // XXI. Hrvatski skup kemičara i kemijskih inženjera – Knjiga sažetaka. | Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2009. str. 142-x

• Grahek, Željko ; Rožmarić Mačefat, Martina | Dimenzioniranje kromatografskih kolona kod određivanja radionuklida - primjena u određivanju radioaktivnog stroncija // XXI. Hrvatski skup kemičara i kemijskih inženjera – Knjiga sažetaka. | Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2009. str. 127-x

• Grahek, Željko | Determination of Sr-89, 90 in complex samples // Abstracts, IRPA 12, Strengthening Radiation Protection Worldwide. | Buenos Aires, 2008. str. 177-178

• Rožmarić Mačefat, Martina ; Grahek, Željko ; Gojmerac Ivšić, Astrid | Determination of uranium in liquid samples // Abstracts, IRPA 12, Strengthening Radiation Protection Worldwide. | Buenos Aires, 2008. str. 454-455

• Grahek, Željko ; Rožmarić Mačefat, Martina ; Nodilo, Marijana | Separation of strontium from complex samples and determination of Sr-89, 90 // Book of Abstracts, ICRM-LLRMT´08. | Braunschweig, 2008. str. 103-x

• Rožmarić Mačefat, Martina ; Grahek, Željko | Isolation of iron from liquid samples and Fe-55 determination // Book of Abstracts, ICRM-LLRMT´08. | Braunschweig, 2008. str. 104-x

• Rožmarić Mačefat, Martina ; Grahek, Željko ; Lulić, Stipe | Determination of 210Pb in water samples // IRPA 2006 : Radiation Protection: from Knowledge to Action : Book of Abstracts. | Pariz, 2006. str. 107-x

• Rožmarić Mačefat, Martina ; Gojmerac Ivšić, Astrid ; Grahek, Željko ; Lulić, Stipe | Isolation of uranium and thorium from natural samples // International Conference Analytical Chemistry and Chemical Analysis (AC&CA-05), Book of Abstracts. | Kijev: Kyiv Taras Shevchenko, National University, Ukraine, 2005. str. 214-x

• Grahek, Željko ; Lulić, Stjepan ; Mikelić, Luka | Rapid determination of 55Fe and 89, 90Sr in liqud samples // Book of Abstracts 1st International Meeting on Applied Physics (APHYS-2003). | Badajoz, 2003. str. 93-93-x

• Barišić, Delko ; Grahek, Željko ; Vaupotič, Janja | Rapid method for simultaneous measurements of total alpha, 222Rn and 220Rn activity in soil gas. // Book of Abstracts 1st International Meeting on Applied Physics (APHYS-2003). | Badajoz: unknown, 2003. str. 94-94-x

• Rastovčan-Mioč, Alenka ; Sofilić, Tahir ; Grahek, Željko | Radioaktivne tvari u elekropećnoj trosci // I. hrvatska konferencija Ekoinženjerstvo 2002 : Knjiga sažetaka. | Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2002. str. 155-155

• Košutić, Katarina ; Grahek, Željko | Determination of low-level radiostrontium activities in natural samples // Book of abstracts of the 10th International Congress of The International Radiation Protection Association. | Hiroshima: International Radiation Protection Association (IRPA), 2000. str. 111-111-x

• Grahek, Željko | Application of plate theory at the calcium-strontium chromatographic separation // Book of abstracts: 22nd International Symposium on Chromatography. | Rim: ISC98, 1998. str. 252-x

• Košutic, Katarina ; Grahek, Zeljko ; Lulic, Stipe | The bioacumullation factor for strontium in some danube fishes // 21st Workshop on Radiation Protection. | Roland Eötvös : Physical Society Health Physics Section, 1996. str. 76-76-x

• Filipović-Vinceković, Nada ; Juranović, Iva ; Grahek, Željko | Interactions in Binary Mixture of Cationic Surfactants // Book of Abstracts. IX Euopean Colloid and Interface Science Conference. | Barcelona: Steinkopff, Darmstadt, 1995. str. 202-202-x

Other

• Karanović, Gorana ; Coha, Ivana ; Tucaković, Ivana ; Volčanšek, Aleš ; Breznik, Borut ; Grahek, Željko | Retrospektivni prikaz radioaktivnosti tekućih efluenata in Nuklearne elektrane Krško // Zbornik radova 12. simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2019. str. 251-256

  www.hdzz.hr

• Smičiklas, Ivana ; Nodilo, Marijana ; Coha, Ivana ; Jović, Mihajlo ; Šljivić-Ivanović, Marija ; Tucaković, Ivana ; Grahek, Željko | Removal/preconcentration of Cs and Pb ions by natural clinoptilolite and synthetic Zeolite 4A // Zbornik radova 12. simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2019. str. 326-330

  www.hdzz.hr

• Ivković, Martina ; Nodilo, Marijana ; Grahek, Željko ; Coha, Ivana | Optimizacija detekcije radioaktivnog stroncija Čerenkovljevim brojenjem // Zbornik radova Dvanaestog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2019. str. 336-340

  www.hdzz.hr

• Nodilo, Marijana ; Dulanská, Silvia ; Mátel, Ľubomír ; Grahek, Željko ; Barišić, Delko | Radioisotopes in ground soil terra rossa samples from the island of Mljet // Zbornik radova jedanaestog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2017. str. 249-254

• Sarap, Nataša B. ; Nodilo, Marijana ; Štrok, Marko ; Janković, Marija M. ; Grahek, Željko | Intercomparison of different methodologies for determination of radiostrontium in soil samples // Zbornik radova jedanaestog simpozija Hrvatskog društva za zaštitu od zračenja. | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2017. str. 255-260

Extended conference abstract

• Coha, Ivana ; Ilievski, Tomislav ; Ivković, Martina ; Karanović, Gorana ; Skoko, Božena ; Tucaković, Ivana ; Grahek, Željko | Razvoj metode određivanja 210Pb kombinacijom kromatografskog odjeljivanja i tekućinske scintilacijske detekcije // Zbornik sažetaka trinaestog Simpozija Hrvatskog društva za zaštitu od zračenja / Petrinec, Branko; Pavelić, Luka; Popić, Jelena et al. (ur.). | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2023. str. 141-142

  www.hdzz.hr

• Skoko, Božena ; Coha, Ivana ; Štrok, Marko ; Bošnir, Domagoj ; Grahek, Željko | Usporedba Sr i AnaLig smole za određivanje 210Pb u organskim uzorcima // Zbornik sažetaka trinaestog Simpozija Hrvatskog društva za zaštitu od zračenja / Petrinec, Branko; Pavelić, Luka; Popić, Jelena et al. (ur.). | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2023. str. 152-153

  www.hdzz.hr

• Skoko, Božena ; Tucaković, Ivana, Štrok, Marko ; Grahek, Željko ; Ilievski, Tomislav | Vertikalna distribucija 210Po u poljoprivrednim tlima // Zbornik sažetaka trinaestog Simpozija Hrvatskog društva za zaštitu od zračenja / Petrinec, Branko; Pavelić, Luka; Popić, Jelena et al. (ur.). | Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2023. str. 117-118

  www.hdzz.hr

Conference abstract

• Coha, Ivana ; Dulanská, Silvia ; Grahek, Željko ; Štofaníková, Michaela ; Tucaković, Ivana | Synergy of sequential injection analysis and molecular recognition technology for low-level 90Sr activity determination // Czech Chemical Society Symposium Series, 2018. str. 121-121

  www.ccsss.cz

• Tucaković, Ivana ; Coha, Ivana ; Grahek, Željko | Combination of an automated isolation method and gamma spectrometry for determination of Fe- 55 in complex samples // Czech Chemical Society Symposium Series, 2018. str. 170-170

  www.ccsss.cz

Doctoral thesis

• Coha, Ivana | Brzo određivanje 89, 90Sr u kompleksnim uzorcima Čerenkovljevim brojenjem na kromatografskoj koloni / Ašperger, Danijela ; Grahek, Željko (mentor). | Zagreb, Fakultet kemijskog inženjerstva i tehnologije, 2019

• Nodilo, Marijana | Razvoj brzih metoda određivanja 55Fe, 89, 90Sr i nekih alfa emitera u kompleksnim uzorcima / Grahek, Željko ; Milardović, Stjepan (mentor). | Zagreb, Fakultet kemijskog inženjerstva i tehnologije, 2014

• Rožmarić Mačefat, Martina | Određivanje niskih aktivnosti alfa i beta emitera u prirodnim uzorcima / Grahek, Željko (mentor). | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2008

• Grahek, Željko | Izolacija radioaktivnog stroncija iz prirodnih uzoraka / Eškinja, Ivan (mentor). | Zagreb, Fakultet kemijskog inženjerstva i tehnologije, 1997

• Grahek, Željko | Izolacija radioaktivnog stroncija iz prirodnih uzoraka / Cerjan-Stefanović, Štefica (mentor); Eškinja, Ivan (neposredni voditelj) . | Zagreb, Fakultet kemijskog inženjerstva i tehnologije, 1997

Master's thesis (university)

• Šuša, Maja | Kromatografska separacija stroncija i olova iz kompleksnih uzoraka praćena izotopskom analizom / Ašperger, Danijela (mentor); Grahek, Željko (neposredni voditelj) . | Zagreb, Fakultet kemijskog inženjerstva i tehnologije, 2016

• Kraljić, Kristina | Određivanje metalnih iona u uzorcima međimurskih vina / Gojmerac Ivšić, Astrid (mentor); Grahek, Željko (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2009

• Kraljić, Kristina | Određivanje metalnih iona u uzorcima međimurskih vina / Grahek, Željko (mentor); Rožmarić Mačefat, Martina (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2009

• Bubić, Ivan | Izolacija stroncija i olova iz slozenih uzoraka metodom ionske kromatografije / Grahek, Željko (mentor); Rožmarić Mačefat, Martina (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2007

• Lojan, Ivana | Određivanje uranija u tekućim uzorcima / Grahek, Željko (mentor); Rožmarić Mačefat, Martina (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2006

• Lojan, Danijela | Kromatografsko odjeljivanje stroncija i olova / Grahek, Željko (mentor); Rožmarić Mačefat, Martina (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2006

• Đurić, Ivana | Izolacija uranija i torija iz prirodnih uzoraka metodom ionske kromatografije / Grahek, Željko (mentor). | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 2005

• Mutavdžić, Dragana | Izolacija stroncija iz kompleksnih matrica kromatografskim metodama / Cerjan-Stefanović, Štefica (mentor); Grahek, Željko (neposredni voditelj) . | Zagreb, Fakultet kemijskog inženjerstva i tehnologije, 2000

• Vitas, Biljana | Određivanje niske aktivnosti Sr-90 na scintilacijskom spektrometru pomoću Čerenkovljevog brojenja / Vojković, Vlasta (mentor); Grahek, Željko (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 1999

• Zečević, Nenad | Odjeljivanje stroncija od alkalijskih i zemnoalkalijskih elemenata primjenom ekstrakcijske kromatografije / Vojković, Vlasta (mentor); Grahek, Željko (neposredni voditelj) . | Zagreb, Prirodoslovno-matematički fakultet, Zagreb, 1999

• Member of Croatian Radiation Protection Association