UTEVA Resin Product Brochure

PRODUCT SHEET TRISKEM INTERNATIONAL Parc de Lormandière Bât. C – Rue Maryse Bastié – Campus de Ker Lann – 35170 Bruz – France Tel +33 (0)2.99.05.00.09 – Fax +33 (0)2.99.05.07.27 – www.triskem-international.com – email : contact@triskem.fr SAS au capital de 40.000 euros – SIRET 493 848 972 00011 – APE2059Z – TVA intra communautaire FR65 493 848 972 19/12/12 UTEVA resin Main Applications - Separation of Uranium - Separation of actinides(IV) Packing Order N°. Form Particle size UT-B25-A, UT-B50-A, UT-B-100-A, UT-B200-A 25g, 50g, 100g and 200g bottles UTEVA resin 100-150 µm UT-C20-A, UT-C50-A , UT-C200-A 20, 50 and 200 2 mL UTEVA resin columns 100-150 µm UT5-C20-A, UT8-C20-A , UT10-C20-A 20 5, 8 and 10 mL UTEVA resin columns 100-150 µm UT-B10-S, UT-B25-S, UT-B50-S, UT-B100-S, UT-B200-S 10g, 25g, 50g, 100g and 200g bottles UTEVA resin 50-100 µm UT-R10-S 10 2ml cartridges UTEVA resin 50-100 µm UT-B10-F 10 g bottle UTEVA resin 20-50 µm Physical and chemical properties Density : 0,39 g/ml Capacity : 100 mg U/g resin UTEVA Conversion factor DW/k' : 1,67 Conditions of utilization Recommended T of utilization : / Flow rate: A grade: 0.6 – 0.8 mL/min, utilization with vacuum or with pressure for s grade resin Storage: Dry and dark, T<30°C For additional information see enclosed literature study PRODUCT SHEET TRISKEM INTERNATIONAL Parc de Lormandière Bât. C – Rue Maryse Bastié – Campus de Ker Lann – 35170 Bruz – France Tel +33 (0)2.99.05.00.09 – Fax +33 (0)2.99.05.07.27 – www.triskem-international.com – email : contact@triskem.fr SAS au capital de 40.000 euros – SIRET 493 848 972 00011 – APE2059Z – TVA intra communautaire FR65 493 848 972 19/12/12 Methods* Reference Description Matrix Analytes Support ACS07 Uranium in soil (2 g samples) soil U columns ACU02 Americium, Plutonium and Uran in urine urine Am, Pu and U columns ACU02 VBS Americium, Plutonium und Uran in urine (Vakuum Box System) urine Am, Pu and U cartridges ACW03 Americium, Plutonium, und Uran in water water Am, Pu and U columns ACW03 VBS Americium, Plutonium und Uran in water (Vakuum Box System) water Am, Pu and U cartridges ACW13 VBS Thorium, Plutonium und Uran in water (VBS) water Pu, Th and U cartridges Application Note: 603 Metal Impurities in Uranium, Plutonium and Mixed Oxides U, Pu, mixed oxides Metal impurities, Np-237 cartridges, columns *developped by Eichrom Technologies Inc. LITERATURE STUDY 3 UTEVA RESIN UTEVA Resin (Uranium und TEtraValents Actinides), is mainly used for the separation of Uranium and tetravalent actinides like Np, Th and Pu. The extractant coated on the inert support is the DP[PP] (Dipentyl pentylphosphonate, figure 1). This extractant shows an affinity for nitrato complexes of uranium (VI), thorium (IV), neptunium (IV) and plutonium (IV). The formation of these complexes is dependent on the nitrate concentration in solution: the higher the nitrate concentration, the better the uptake of the actinides (see figure 2). Figure 1 : Dipentyl pentylphosphate (DP[PP]) also called Diamyl amylphosphate (DAAP). The assumed equilibrium extraction is : 343342232322E)NO(ThE3NO4ThE)NO(UOE2NO2UO???????????? With E = extractant It can be seen that the uptake from nitric acid is very similar for each of the tetravalent actinides and uranium. All have strong retention (k'>100) above 5M nitric acid. Note that Am is not retained at any nitric acid concentration. This fact is important in developing analytical separation schemes. Plutonium can be reduced to Pu(III). At this valence state, it behaves similarly to Am(III). Figure 2 is a graph that shows the effect of HCl on the retention of Np(IV), Th(IV), and U(VI) on UTEVA Resin. The large difference in k' for uranium and thorium in the range of 4-6M HCl allows for the selective elution of Th from the resin after both thorium and uranium have been loaded. U and Np remain on the resin. Looking at the oxalic acid effects on Np and U retention, Np can be stripped with 0.05M oxalic acid solution without effect on U elution (fig. 3 and 4). Figure 2 : Capacity factors for different actinides on UTEVA resin with respect to the acid concentration. Figure 3 : Matrix effect on Np(IV) retention in 2M HNO3. LITERATURE STUDY 4 Figure 4 : Matrix effect on U(VI) retention in 2M HNO3. Phosphate occurs quite commonly in a variety of biological and environmental samples, its effect is most relevant. Fortunately the addition of aluminium to the sample can significantly reduce this issue. Phosphate anions readily complex tetravalent actinides, this phosphato complex is not extracted by the DP[PP]. Added aluminum can effectively tie up the phosphate preventing its interference with neptunium (or thorium) uptake by the resin. In some methods, as much as 1M Al(NO3)3 might be added to counteract the effects of phosphate. (Cf. figures 3 et 4). Depending on the radionuclides to be measured, UTEVA Resin may be used alone or in combination with other resins. UTEVA Resin has been used for the determination of U and Th concentration in soil by ID-TIMS and ID-SIMS2. Another interesting application of UTEVA Resin is in the analysis of trace metal impurities in uranium and plutonium metals and oxides. In nuclear fuel production and recycling operations, it is necessary to measure the purity of the uranium and/or plutonium used in fuel fabrication. UTEVA Resin has been applied to sample preparation schemes to remove the U or Pu matrix allowing for analysis of the trace metal impurities by AAS, ICP-AES or ICP-MS. This approach has been employed at Savannah River and Oak Ridge in the US3. Combined with TRU resin, UTEVA resin is commonly used to sequentially elute U /Pu/Am. Bibliography (1) Horwitz P., Dietz M., Chiarizia R., Diamond H., Analytica Chimica Acta, 266, pp. 25-37 (1992); Eichrom Reference HP392. (2) Adriens A G., Fassett J. D., Kelly W. R., Simons D.S., Adams F. C., Analytical Chemistry, 64, pp. 2945-2950 (1992) ; Eichrom Reference AA192. (3) Maxwell S. L., Eichrom Western Users’ Group Workshop, Albuquerque, NM – USA, (2000).