R 325.5264 Appendix A4. Concentrations in air and water above natural background. Elements I to L.

Rule 264. (See notes in Rule 270.) TABLE I TABLE II Element (atomic number) Radionuclide* Column 1 Air (µCi/ml) Column 2 Water (µCi/ml) Column 1 Air (µCi/ml) Column 2 Water (µCi/ml) Indium (49) In-113m S 8 x 10-6 4 x 10-2 3 x 10-7 1 x 10-3 I 7 x 10-6 4 x 10-2 2 x 10-7 1 x 10-3 In-114m S 1 x 10-7 5 x 10-4 4 x 10-9 2 x 10-5 I 2 x 10-8 5 x 10-4 7 x 10-10 2 x 10-5 In-115m S 2 x 10-6 1 x 10-2 8 x 10-8 4 x 10-4 I 2 x 10-6 1 x 10-2 6 x 10-8 4 x 10-4 In-115 S 2 x 10-7 3 x 10-3 9 x 10-9 9 x 10-5 I 3 x 10-8 3 x 10-3 1 x 10-9 9 x 10-5 Iodine (53) I-125 S 5 x 10-9 4 x 10-5 8 x 10-11 2 x 10-7 I 2 x 10-7 6 x 10-3 6 x 10-9 2 x 10-4 I-126 S 8 x 10-9 5 x 10-5 9 x 10-11 3 x 10-7 I 3 x 10-7 3 x 10-3 1 x 10-8 9 x 10-5 I-129 S 2 x 10-9 1 x 10-5 2 x 10-11 6 x 10-8 I 7 x 10-8 6 x 10-3 2 x 10-9 2 x 10-4 I-131 S 9 x 10-9 6 x 10-5 1 x 10-10 3 x 10-7 I 3 x 10-7 2 x 10-3 1 x 10-8 6 x 10-5 I-132 S 2 x 10-7 2 x 10-3 3 x 10-9 8 x 10-6 I 9 x 10-7 5 x 10-3 3 x 10-8 2 x 10-4 I-133 S 3 x 10-8 2 x 10-4 4 x 10-10 1 x 10-6 I 2 x 10-7 1 x 10-3 7 x 10-9 4 x 10-5 I-134 S 5 x 10-7 4 x 10-3 6 x 10-9 2 x 10-5 I 3 x 10-6 2 x 10-2 1 x 10-7 6 x 10-4 I-135 S 1 x 10-7 7 x 10-4 1 x 10-9 4 x 10-6 I 4 x 10-7 2 x 10-3 1 x 10-8 7 x 10-5 Iridium (77) Ir-190 S 1 x 10-6 6 x 10-3 4 x 10-8 2 x 10-4 I 4 x 10-7 5 x 10-3 1 x 10-8 2 x 10-4 Ir-192 S 1 x 10-7 1 x 10-3 4 x 10-9 4 x 10-5 I 3 x 10-8 1 x 10-3 9 x 10-10 4 x 10-5 Ir-194 S 2 x 10-7 1 x 10-3 8 x 10-9 3 x 10-5 I 2 x 10-7 9 x 10-4 5 x 10-9 3 x 10-5 Iron (26) Fe-55 S 9 x 10-7 2 x 10-2 3 x 10-8 8 x 10-4 I 1 x 10-6 7 x 10-2 3 x 10-8 2 x 10-3 Fe-59 S 1 x 10-7 2 x 10-3 5 x 10-9 6 x 10-5 I 5 x 10-8 2 x 10-3 2 x 10-9 5 x 10-5 Krypton (36) Kr-85m Sub** 6 x 10-6 ---------- 1 x 10-7 ---------- Kr-85 Sub** 1 x 10-5 ---------- 3 x 10-7 ---------- Kr-87 Sub** 1 x 10-6 ---------- 2 x 10-8 ---------- Kr-88 Sub** 1 x 10-6 ---------- 2 x 10-8 ---------- Lanthanum (57) La-140 S 2 x 10-7 7 x 10-4 5 x 10-9 2 x 10-5 I 1 x 10-7 7 x 10-4 4 x 10-9 2 x 10-5 Lead (82) Pb-203 S 3 x 10-6 1 x 10-2 9 x 10-8 4 x 10-4 I 2 x 10-6 1 x 10-2 6 x 10-8 4 x 10-4 Pb-210 S 1 x 10-10 4 x 10-6 4 x 10-12 1 x 10-7 I 2 x 10-10 5 x 10-3 8 x 10-12 2 x 10-4 Pb-212 S 2 x 10-8 6 x 10-4 6 x 10-10 2 x 10-5 I 2 x 10-8 5 x 10-4 7 x 10-10 2 x 10-5 Lutetium (71) Lu-177 S 6 x 10-7 3 x 10-3 2 x 10-8 1 x 10-4 I 5 x 10-7 3 x 10-3 2 x 10-8 1 x 10-4