Skip to main content

Advertisement

Table 7 Measured iron concentrations (μg/L) in 0.2-μm filtrate in different treatments

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

Test ID Alluvium/J-13 Devitrified tuff/J-13 Zeolitic tuff/TCU Carbonate/LCA
  J-13 Control Blank Sorption Blank Sorption Control Blank Sorption Control Blank Sorption
A NDa 1038 ± 1520 ND 1414 ± 221 557 ± 435 ND 27,752 ± 5,894 26,328 ± 4,882 ND ND 106 ± 36
B ND 703 ± 957 15.0 ± 5.7 98.5 ± 7.2 260 ± 347 ND 5,545 ± 4,139 4,465 ± 3,050 ND 6.94 ± 5.00 12.4 ± 21.6
C 160 ± 118 219 ± 32.7 32.1 ± 20.4 639 ± 634 108 ± 46.3 ND 123 3,539 ± 3,136 ND 16.0 ± 10.2 6.47 ± 11.6
Db 891 ± 1193 90.0 ± 60.4 5.65 ± 4.65 230 ± 86 279 ± 149 958 ± 1,371 2,185 ± 1,624 1,307 ± 1,330 187 ± 224 ND 171 ± 254
E ND 865 ± 489 9.84 ± 13.7 199 ± 74.0 82.5 ± 20.8 ND 4,734 ± 491 5,475 ± 4,227 27.3 ± 17.7 ND 33.5 ± 5.56
  1. a ND: not detected; below the detection limit of about 5 μg/L.
  2. b"11 ppm" FeCl2 was added into both background and tracer sorption solutions used in Test D. Measured Fe2+ concentrations in the control samples are in the range of 0.2 to 1 ppm, which is consistent with the excepted dissolved Fe2+ concentrations from Geochemist's Workbench; the Fe2+ in solution is controlled by the solubility of FeCO3 and/or Fe(OH)2.