STUK

Analysis of a liquid sample residue using in situ alpha spektrometry

Pöllänen R, Klemola S

Journal of Radioanalytical and Nuclear Chemistry, January 2016, Volume 307, Issue 1, pp 747-750

Abstract: Three in situ alpha spectrometry methods were demonstrated to rapidly detect alpha-particle emitting radionuclides from a liquid sample. The liquid containing natU and 241Am was evaporated under an infrared lamp and the residue was analyzed in a vacuum and at ambient air pressure. The residue was too thick to determine activities of individual nuclides, but their identification and activity ratio calculations were possible. U and 241Am behaved differently during the liquid dry off, which led to alpha peaks of different shape. This finding should be taken into account for preparing future spectrum unfolding programs.