Fig. 5
From: Decontamination of Cs from Japanese cedar (Cryptomeria japonica) via kraft cooking
Proportion of 133Cs and 137Cs in each component after kraft cooking: a, b bark; c, d sapwood; and e, f heartwood. The proportion was calculated as the percent ratio of the 133Cs or 137Cs in each component to the total amount of 133Cs or 137Cs in all the components (chips were not included). The 137Cs radioactivity in the sapwood and heartwood was expressed in the form of black liquor because the 137Cs radioactivity was not detected in the supernatant and precipitation. n.d. indicates not detected. The Y-axis of a is in logarithmic units