Geoscience Reference
In-Depth Information
Fig. 17.12 Pu isotope ratios of Hanford Site 100 K-Area groundwater samples. Global fallout
ratio from Kelley et al. (
1999
). (A)
240
Pu/
239
Pu. (B)
241
Pu/
239
Pu. Subfraction data are from Well
K-27 including the ratio in the redox fraction (referred to as ''retentate-B''). The sample from K-
109A is unfiltered. Hanford Site refers to typical site operation discharge which contains 0.54 %
241
Pu/
239
Pu=0.00117 (January 2000) (Dai et al.
2005
).
Reprinted from Dai et al. (
2005
). Copyright (2005) with permission from Elsevier
241
Pu as of June 1968, equivalent to
Transport into groundwater may also be facilitated by association with
microbial populations. In a column experiment, Pang et al. (
2005
) showed that
cadmium (Cd) adsorbed on Bacillus subtilis spores or Escherichia coli was
transported through saturated coarse alluvial gravels, while a complementary
