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Table 1 Radionuclide sorption on different rock (compiled from [4])

From: Effect of reducing groundwater on the retardation of redox-sensitive radionuclides

Element

Sample type

Number of Samples

Distribution Coefficients (mL/g)

   

Minimum

Maximum

Mean

Standard Deviation

Strontium

Alluvium

73

1

781

470

197

 

Carbonate rock

 

5

16

  
 

Devitrified tuff

154

9

1,200

101

141

 

Vitric tuff

30

23

220

148

62

 

Zeolitic tuff

83

1,200

246,085

39,277

54,882

Technetium

Alluvium

17

0

12

2.16

3.48

 

All tuffs

 

0

0

  

Iodine

Alluvium

14

0

24.5

5.74

4.03

 

All tuffs

 

0

0

  

Cesium

Alluvium

56

1,720

33,200

5,884

5,153

 

Carbonate rock

 

4

101

  
 

Devitrified tuff

159

10

3,800

645

656

 

Vitric tuff

30

109

1,061

646

317

 

Zeolitic tuff

86

2,700

72,000

16,747

13,710

Uranium

Alluvium

48

0.9

60

6.36

5.04

 

Carbonate rock

 

0

132

  
 

Devitrified tuff

75

0

15

2.51

2.29

 

Vitric tuff

59

0

12

1.89

1.7

 

Zeolitic tuff

176

0

9,423

45

423

Neptunium

Alluvium

30

1.83

22

8.57

5.08

 

Carbonate rock

 

< 100

5,000

  
 

Devitrified tuff

421

0

2,353

19

166

 

Vitric tuff

400

0

526

3.17

29

 

Zeolitic tuff

430

0

22

3

2

Plutonium

Alluvium

24

230

21,000

4,091

4,448

 

Carbonate rock

 

100

10,000

  
 

Devitrified tuff

118

6

1,900

125

168

 

Vitric tuff

71

23

1,810

516

472

 

Zeolitic tuff

110

19

2,000

260

242

Americium

Alluvium

24

3,200

1,400,000

174,469

214,582

 

Carbonate rock

 

150

300,000

  
 

Devitrified tuff

35

79

12,000

1,845

1,834

 

Vitric tuff

8

860

2,050

1,354

398

 

Zeolitic tuff

25

470

33,000

5,204

7,757