20.500.12556/DKUM-22689 VALIDACIJA METODE RENTGENSKE FLUORESCENČNE ANALIZE ZA MERJENJE MASNEGA DELEŽA ZLATA, SREBRA IN PLATINE V ZLITINAH PLEMENITIH KOVIN VALIDATION OF X-RAY FLUORESCENCE METHOD FOR DETERMINATION MASS ANALISIS PROPORTION OF GOLD, SILVER AND PLATINUM ALLOYS OF PRECIOUS METALS Namen diplomske naloge je bil validirati analizno metodo rentgenske fluorescenčne analize za merjenje masnega deleža zlata, srebra in platine v zlitinah plemenitih kovin s pomočjo referenčnih materialov, torej ovrednotiti karakteristike analizne metode in potrditi njeno primernost ali neprimernost za predvideno uporabo. V prvem delu diplomske naloge smo izdelali splošen validacijski protokol. Opredelili smo uporabo in namen metode, s sklicem na delovno dokumentacijo analizne metode. Pred validacijo smo opravili predvalidacijske eksperimente, pri katerih smo ugotovili okvirne metode. Temu primerno smo ustrezno pripravili kriterije, ki smo jih nato validirali. Nato smo izvedli eksperimente iz obsega validacije. S pomočjo referenčnih materialov smo potrdili, da je metoda, s katero smo merili masni delež posamezne plemenite kovine (zlato, srebro in platino), primerna za izbrano merilno območje. Nato smo preverjali natančnost meritev (ponovljivost in obnovljivost), točnost metode in merilno negotovost. The purpose of this thesis was to validate the analytical method of X-ray fluorescence analysis to measure the mass fraction of gold, silver and platinum alloys of precious metal by means of reference materials, therefore, to evaluate the characteristics of analytical methods and to confirm its suitability or unsuitability for intended use. First a general protocol for validation was developed. The application and the purpose of the method were evaluated. Pre-validation experiments were performed before the complete validation, During the validation the extent of characteristic parameters was performed. According to the results obtained the validation criteria were performed. Thereupon all experiments for validation were performed.using certified reference materials. It was confirmed that the XRF analytical method for mass fraction determination of particular precious metal (gold, silver and platinum) is appropriate for the selected concentration range. Precision of the results (as repeatabilty and reproducibiliy ), accuracy and measurement uncertainty were evaluated. RFA - rentgenska fluorescenčna analiza RM - referenčni material plemenite kovine zlato srebro platina XRF X-ray fluorescence analysis CRM certified reference materials precious metals gold silver platinum true true false [S. Kocijančič] Slovenski jezik Angleški jezik Diplomsko delo 2012-04-16 07:18:06 2012-04-20 12:52:09 2022-04-14 12:01:18 2023-12-30 03:31:40 2012 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 543.442:006.83(043.2) 16687638 URN:SI:UM:DK:RAFXB2N8 VS_Kocijancic_Suzana_2012.pdf VS_Kocijancic_Suzana_2012.pdf 1 9F67BC0A1AA4ED8D4B28278C84679064 84eca3afc9dae560bdf21ed3057f4012876c64d42ed31eed742bf903e6eddaef 8cd62b86-7c06-11eb-bb7a-00155d0001ca 20.500.12556/dkum/06ebf8da-27f7-4dc0-bf9d-9f67e1c811fd https://dk.um.si/Dokument.php?lang=slv&id=29405 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0