Actinoid separations by extraction chromatography

A new method for the determination of plutonium and americium using high pressure microwave digestion and alpha-spectrometry or ICP-SMS

“…For several decades, liquid-liquid extraction and ion exchange chromatography were the best approaches [2,11]. Although these methods are still used [10,12,13], most of the recent methodologies are based on extraction chromatography resins using Eichrom Ò TEVA for Pu and TRU for Am [14][15][16]. Using these extraction chromatographic resins considerably reduces the time and reagent volumes required for the analysis [17].…”

“…Using these extraction chromatographic resins considerably reduces the time and reagent volumes required for the analysis [17]. TEVA and TRU resins have been used successfully in a large number of research works [16,18]. However, using the TRU resin has sometimes led to low recoveries of Am in samples with high iron content [18].…”

Improved radioanalytical method for the simultaneous determination of Th, U, Np, Pu and Am(Cm) on a single TRU column by alpha spectrometry and ICP-MS

“…For the sequential separation of the actinides the combination of two [2][3][4][5][6][7][8][9] or more extraction chromatographic and/or ion exchange columns [10][11][12][13][14][15] is the most commonly applied solution for the analysis of different matrices, e.g. water [11], soil and sediment [2-5, 9, 12, 14], urine [8,13], radioactive wastes [4] and safeguards swipe samples [10,16] using alpha spectrometry and/or ICP-MS.…”

Comparative study of different analytical methods for the determination of 238U, 234U, 235U, 230Th and 232Th in NORM samples (Southern Catalonia)

“…For instance, Lozano et al (2010) obtained recoveries between 40% and 70% for uranium and thorium isotopes in soils and vegetables and almost 70% in water samples. Other strategies reported in the bibliography for the radiochemical separation including the use of extraction chromatography have been spread intensively over the last few years due to the availability of different commercial and specific resins, such as UTEVA, TEVA or TRU (Horwitz et al, 1992;Pilviö and Bickel, 2000;Maxwell and Culligan, 2006;Tosheva et al, 2006;Tsai et al, 2008;Casacuberta et al, 2012). For instance, in the study from Tosheva et al (2006) the obtained recovery values for uranium and thorium isotopes were between 78% and 87% in environmental waters, using the combination of 3M RADÔ disks (for isolating Pb) and UTEVA resins.…”