20.500.12556/DiRROS-28782 A comparative study of the gross alpha and beta sample preparation method with a liquid scintillation counter Gross alpha and beta (GAB) measurements provide a rapid screening tool for assessing radionuclide contamination in water. This study aimed to establish a sensitive, simple method for low-level GAB detection using a liquid scintillation counter (LSC). Different sample preparation approaches (direct, co-precipitation with Fe(OH)3, Ca3(PO4)2, MnO2, and evaporation) were tested on four water samples containing natural and anthropogenic radionuclides from the IAEA 2022 proficiency test. Results, evaluated by recoveries and Zeta-scores, showed preparation methods influence recovery and quenching. Co-precipitation with Ca3(PO4)2 and evaporation performed best, though GAB remains a complementary rather than absolute analytical method, as not all radionuclides can be detected simultaneously. radioecology gross alpha and beta pre-concentration methods liquid-scintillation counting recovery zeta-score radioekologija radioanalitični postopki true false true Springer Nature Švica Angleški jezik Makedonski jezik © The Author(s) 2026 Neznano 2026-04-07 11:50:59 2026-04-07 11:51:00 2026-04-08 03:47:41 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Opis vira z dne 30. 3. 2026; str. [1-15] iss. Vol. 335 [in press] 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-10-01 2026-03-07 2026-03-25 539.16 1588-2780 10.1007/s10967-026-10832-0 273598979 https://link.springer.com/article/10.1007/s10967-026-10832-0 1 49fd6ac8-3267-11f1-b7aa-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42858 RAZ_Rovan_Stiplosek_Leja_2026.pdf RAZ_Rovan_Stiplosek_Leja_2026.pdf 1 3E02B0030A56BEECF488A3647EFB95EF 10884a3fdc2056687d8ac7ec55a48006780cbf10fc327579e970c8379c348d45 baed9dd9-3267-11f1-b7aa-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42859 Institut Jožef Stefan 0 0 0