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 |