co /m? CoNCENITRATION LNSTHNTANEZOUS oF @ r aed OE - ” Ig 1 24 La OEE 1, "é uu NN a io u 107 \ 4 2 ‘ a4 fZ ' J a j Fog § 10 gy uw - Zz H i Ww 164 2 }- QO 12 Is TI G TIME 3 HRs 24 , | q de ott Same as Fig. 4a, except nuclide is iodine-131. - HRS deeded Seer beth a G TIME Figure 4b, 1 8