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HN03 CONCENTRATION (~) Fig. 46. The dependence of the distribution coefficients of several ions on zirconium phosphate on the aqueous HN03 concentration. All adsorbates present in tracer amoumts. Solutions of Pu(~) were 0.005 ~ in sulphamic acid and 0.015 ~ in h drazine; solutions of Pu(IV) 0.02 ~ in NahT02 and solutions of Pu02~ 0.02 ~ in KBr03.1 & I I 1 1 , , 1 , ‘/ 1 1 1 (2 I 1 1 1 1 I ,4, 1 1 I -101 3 a ‘7 9 PH Fig. 47. Log D for some metal ions as a function of pH on silica gel (KEBO, 50-100 mesh) .22 83 1
95% of Pu(IV) was removed from a 0.5 ~ Na2C03 solution by passage of 2000-bed volumes at a flow rate of 1 ml/ cm2/min of the solution through an HTO column. The absorption of Pu(IV) was not affected by tb.e pre aence of 5 mg/ 1 of U (VI). The absorption of Pu(VI) was only 20~0 in 1000-bed volumes under the same conditions. A possible application of this system to recover Pu and other ions from carbonate wastes in processing plants is discussed. Paper Chromatography Clanet 90 determined paper chromatographic Rf values for Pu(III), Pu(IV) and Pu(VI), U(IV)J and U(VI), and Am(lII) in HC1-butanol mixtures (1:1) ranging from 1 to 10 M HC1. The Rf values “reached a matium around 6 M HC1 and ranged from — — 0.27 for U(m) to 0.50 for U(VI), the other ions falling in between. The ions of lower valency tended to have lower Rf values. 47 Bildestein et al. separated U and Pu by several paper cbromatographic methods, using different combinations of solvent and acid. The use of ion-exchange paper to separate U and Pu was also reported by these w“orkers. For example, with Whatman ET-20 using 6 M HC1 as a developer, the Rf values are 0.56 and 0.98 for U — and Pu, respectively. The oxidation states of the U and Pu were not specified. Fink and Fink ’31 mve stigated many combinations of solvent and acid to develop paper chromatograms of both Pu(IV) and Pu(VI). In most systems PuOV) failed to move or streaked, but in a few cases moved quantitatively. The results indicated Pu(VI) and U(VI) might be separated in a methyl ethyl ketone - dilute nitric acid system. Anion Exchange The behavior of the actinide elements in various oxidation states on a strong base anion exchange resin (typically Dowex 1 or 2) in HC1. is shown in Table IV- 29. Strong adsorption of the actinides in the higher ondation states (IV-VI) occurs at HC1 concentrations above 6 ~ while resorption occurs below 2 M HC1. — TABLE IV- 29. Absorption and Resorption of Actinides on Strong Base Anion Exchangers in HC1 Solutions Oxidation State of HC1 Concentration(~) for Actinide Absorption(a) Resorption@) m Not absorbed IV 6-8 2-4 v 6-8 2-4 VI 2-3 0.1-1 (a)Kd . lo-10o for absorption. (b) Kd = 0.1-1.0 for resorption. A convenient way of separating Pu from other actinides and most other elements is to adsorb Pu(IV) or Pu(VI) onto such a resin from > 6 M HC1 solution, — wash with HC1, and desorb by reducing the Pu to the trivalent with a suitable reducing 84
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1National Academy of Sciences Natio
Page 3 and 4:
The Radiochemistry of Plutonium. Ge
Page 5 and 6:
PREFACE This report has been prepar
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Procedures (Continued) CONTENTS (Co
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IL GENEWL REVDZWS OF THE RADIWHEMIS
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IV. CHEMISTRY OF PLUTONIUM OF SPECI
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Solution TABLE IV-2. Behavior of PU
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* Compiled primarily from the revie
Page 17 and 18:
TABLE IV-6. Oxidation-Reduction Rea
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c.. Pu(IV)+ Pu(VI) Reagents Solutio
Page 21 and 22:
Concentration Equilibrium Constant
Page 23 and 24:
PU+4 has approximately the same ten
Page 25 and 26:
TABLE IV- 9. Ionic Potential of Plu
Page 27 and 28:
TABLE IV- 11. Stabflity Conetants o
Page 29 and 30:
TABLE IV- 12. Stability Constants o
Page 31 and 32:
D. 1 Co-precipitation and Precipita
Page 33 and 34:
is first oxidized to Pu(VI) with so
Page 35 and 36:
oxygen in the ratio 1:3. If an exce
Page 37 and 38:
the TBP cone entration. Solovkin 39
Page 39 and 40: D, l? D Ic n. 0 5 10 Concentration
Page 41 and 42: D 103 ~ ,.2 _ 10 I H ,0-1 ~ / P / P
Page 43 and 44: 100( I0( 1( D 1.( 0. 0.0 0.00 Nltrl
Page 45 and 46: Table IV- 16. (Continued) Extractan
Page 47 and 48: Table IV-16. (Continued) Extr actan
Page 49 and 50: In this equation, HA represents any
Page 51 and 52: X[N05] = [HN03] ‘( ~ ~[N03] = HN0
Page 53 and 54: Di-acidic compounds. Mono-2- ethylh
Page 55 and 56: A may be either a simple anion or t
Page 57 and 58: n 104 d Id 10 I 10-1 , a ,,81 0.1 M
Page 59 and 60: The fact that Pu(III) does not extr
Page 61 and 62: Fig. 25. Extraction of elements as
Page 63 and 64: TABLE IV- 19. Distribution Coeffici
Page 65 and 66: 10~ I ~ 0.01~ D 0.001 : 0,0001 . La
Page 67 and 68: loi- 1“’’’’’’’”1
Page 69 and 70: TABLE IV- 22. Extraction of Plutoni
Page 71 and 72: m * Amideb N, N-Dihexylformamide N,
Page 73 and 74: dependence on the TTA concentration
Page 75 and 76: 1.0 D 0.1 —--L~,20 HNOO; CO&NT R
Page 77 and 78: cupferron, followed by back extract
Page 79 and 80: . more. Siekierski and Taube, 381 a
Page 81 and 82: TABLE IV- 27. Slope of the Dependen
Page 83 and 84: polymerization of the resin to prov
Page 85 and 86: co ; n 1000L z - 100 z o ~ m oL x z
Page 87 and 88: Volume distribution coefficient of
Page 89: affinity of several ions was Th(IV)
Page 93 and 94: 2 d 1.0 I I I 1 I I 1 ,, , , I II r
Page 95 and 96: X“ 104 , 1 1 1 1 1 .— .-. I Ioa
Page 97 and 98: 200 100 50 20 I O.10 ~ $ NPIX PUIIT
Page 99 and 100: Fig. 54. Adsorption of the elements
Page 101 and 102: Toribara et al. 403 used a liquid s
Page 103 and 104: V. DISSOLUTION OF PLUTON17JM SAMPLE
Page 105 and 106: m m TABLE VI- 30. Source Preparatio
Page 107 and 108: o 0 TAIIT.E VI-31. Techniques for M
Page 109 and 110: Solvent extraction of Pu into a liq
Page 111 and 112: TABLE VII-33. Basic Data for Critic
Page 113 and 114: Procedure No. 6. 7. 8. 9a, 9b , Aut
Page 115 and 116: Procedure 1. Determination of Pu in
Page 117 and 118: (e) (f) (g) (h) Where C v E The pre
Page 119 and 120: Procedure 2. Separation and determi
Page 121 and 122: Procedure 3. Separation and determi
Page 123 and 124: Procedure 4. Plutonium R. J. Morrow
Page 125 and 126: Procedure 5. Plutonium D. C, Hoffma
Page 127 and 128: Procedure m. Pipet tie samples (2~i
Page 129 and 130: Procedure 6. Separation of Plutoniu
Page 131 and 132: Procedure 7. Determination of Pu (R
Page 133 and 134: Procedure 8. Uranium and Plutonium
Page 135 and 136: 15. Add 3 drops of HC1 and 1 drop o
Page 137 and 138: Procedure 9b. Separation of Plutoni
Page 139 and 140: Procedure 11. Uranium and Plutonium
Page 141 and 142:
Procedure 12. Plutonium from Enviro
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9. 10. 11. 12. 13. 14. 15. 16. 17.
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10. 11. 12. 13. 14. 15. 16. 17. 16.
Page 147 and 148:
Procedure 14. Separation of Plutoni
Page 149 and 150:
Procedure 15. Separation of Pu befo
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Procedure 16. Separation of Plutoni
Page 153 and 154:
Appendix (m) (n) (o) (P) Purificati
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Procedure 17. Separation of Np and
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Procedure 19. Determination of Plut
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NOTE: Reporting Results Results are
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Notes .. 1. 2. 3. The element prase
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3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13
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Procedure 22. Determination of Amer
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concentrated nitric acid in a block
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Preparation of Sample The 24-hr or
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
“The Actinide Elements” (McGraw
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48. D. H. Boase, J. K. Foreman, and
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108. 109. 110. 111. 112. 113, 114.
Page 181 and 182:
159. 160. 161. 162. 163. 164. 165.
Page 183 and 184:
217. W. E. Keder, J. Inorg. Nucl. C
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279. 280. 281. 282. 283. 284. 285.
Page 187 and 188:
339. 340. 341. 342. 343. 344. 345.
Page 189 and 190:
397. 398. 399. 400. 401. 402. 403.
Page 191 and 192:
451. C. E. Honey, Jr., R. N. R. Mul
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