Tkaczyk, Alan, juhendajaKiisk, Madis, juhendajaOzden, Banu, juhendajaVaasma, Taavi, juhendajaGyakwaa, FrancisTartu Ülikool. Loodus- ja täppisteaduste valdkond2017-06-302017-06-302016http://hdl.handle.net/10062/57046The thesis aims at finding suitable alpha spectrometry measurement procedure and validating it to be implemented in the laboratory where it can be used for routine analytical procedure for the determination of 210Po in environmental samples. In establishing if the procedure is fit for the intended purpose, the following validation parameters were determined: trueness, accuracy (En-value, z-score), relative bias, and tracer recovery. Also the main sources of uncertainty and their percentage contributions were established.engPolonium-210validationalpha spectrometrynatural radiation sourceThesis