Values * Small plankton. ** Not detected. 140 nd nd nd Rul05_Rpl95 360 0.3 11 nd** y237 100 7.0 nd nd 0.3 Ru!06_py106 Total d/m/g x 106 1.2 nd nd 0.6 Cel44-pr144 150 nd 15.0 nd 2.0 8.6 nd 3.3 nd 1.7 0.7 0.5 0.3 nd 1.1 Zr95-Nb99 nd 9.9 5.4 12 13 7.3 1,4 Te1l32-1132 nd 2.3 4.4 2.2 0.7 2.4 2.9 Bal40-1,a140 nd 1.0 1.1 0.3 0.8 1.5 3,0 Ru103_Rp_103 0.1 1.9 2.0 0.9 0.6 2.7 5.3 74 3.6 81 13 62 P-35 P-34 17 67 P-26 2.2 73 P-13 P-17 activity P-25 P-15 3.6 31 56 P-6 P-15* Sample Percent of total P-13* expressed as per cent of the total radioactivity contributed by each radioisotope at the time of collection. Gamma emitting radioisotopes in samples of plankton. Cel4l-prl41 Mo99-Tc99m Np239 Radioisotope Table 3. -20-

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