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Pu(IV) � Nitric Acid (cont) • The adsorption rate of Pu(IV) increases with increasing temperature. • In addition, the adsorption rate is significantly higher for resins with lower cross-linking. • Both of these factors also apply to the elution. • Temperatures about room temperature and less cross-linked resins are therefore often used. • Increased temperature may, however, promote Pu hydrolysis in very dilute eluents. 54
Example of Th/U/Pu Separation 1 Th, U, Pu in 7.2 M HNO 3 Adapted from: 1. Kressin, I.K., Waterbury, G.R., The quantitative separation of plutonium from various ions by anion exchange Analytical Chemistry 34, 1598 (1962) 2. Talvitie, N.A. Radiochemical determination of plutonium in environmental and biological samples by ion exchange Analytical Chemistry 43, 1827 (1971) Pu Th U 2 3 9 M HCl 0.36 M HCl/ 0.01 M HF 55
Page 1 and 2:
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Page 3 and 4: Analytical Chemistry of Uranium and
Page 5 and 6: Tracers • Factors to consider for
Page 7 and 8: Uranium Tracer Tracer Alpha Energy
Page 9 and 10: Oxidation/Reduction Chemistry • T
Page 11 and 12: U Oxidizing and Reducing Agents •
Page 13 and 14: Oxidation States of Plutonium (cont
Page 15 and 16: Pu Oxidizing and Reducing Agents
Page 17 and 18: Plutonium Hydrolysis (cont) Fractio
Page 19 and 20: Plutonium Hydrolysis (cont) • Pu
Page 21 and 22: Separation Techniques Technique (Co
Page 23 and 24: Ion Exchange Separations (cont) •
Page 25 and 26: Anion Exchange � HCl (cont.) Dist
Page 27 and 28: U(VI) � Hydrochloric Acid 0.1 - 0
Page 29 and 30: U(IV) � Hydrochloric Acid 0.5 - 2
Page 31 and 32: U(III) � Hydrochloric Acid • No
Page 33 and 34: Uranium � Hydrochloric Acid (cont
Page 35 and 36: Pu(IV) � Hydrochloric Acid (cont)
Page 37 and 38: Pu(III) � Hydrochloric Acid • P
Page 39 and 40: Pu � Hydrochloric Acid • In add
Page 41 and 42: Anion Exchange � Nitric Acid (con
Page 43 and 44: U(VI) � Nitric Acid • U(VI) is
Page 45 and 46: U(VI) � Nitric Acid (cont) Source
Page 47 and 48: Pu(III) and Pu(VI) � Nitric Acid
Page 49 and 50: Pu(IV) � Nitric Acid (cont) • T
Page 51 and 52: Pu(IV) � Nitric Acid (cont) • T
Page 53: Pu(IV) � Nitric Acid (cont) • P
Page 57 and 58: Extraction Chromatography (cont)
Page 59 and 60: Extraction Chromatography (cont) Re
Page 61 and 62: UTEVA Resin (cont) [HNO 3] k’ 0.3
Page 63 and 64: TRU Resin (cont) [HNO 3] k’ 0.2 M
Page 65 and 66: TEVA Resin (cont) [HNO 3] k’ 0.3
Page 67 and 68: DGA Resin (cont) [HNO 3] k’ 0.1 M
Page 69 and 70: References 1. Morss, L. R., Edelste
Page 71 and 72: Analytical Methods 1. U.S. Environm
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