C.M.R. 10, 144, ch. 220, pt. C, app 144-220-C-B
Examples of naturally occurring radioactive materials. (Naturally occurring radioactive material is any material of natural origin that emits radiation spontaneously, excluding uranium, thorium, and the tailings produced in their extraction)
Hydrogen-3 | Indium-115 | Lead-210 |
Beryllium-7 | Lanthanum-138 | Lead-212 |
Beryllium-10 | Cerium-142 | Bismuth-210 |
Carbon-14 | Neodymium-144 | Bismuth-212 |
Sodium-22 | Samarium-147 | Polonium-210 |
Silicon-32 | Samarium-148 | Radon-220 |
Phosphorus-32 | Samarium-149 | Radon-222 |
Phosphorus-33 | Gadolinium-152 | Radium-224 |
Sulfur-35 | Hafnium-174 | Radium-226 |
Chlorine-36 | Lutetium-176 | Radium-228 |
Chlorine-39 | Rhenium-187 | Actinium-227 |
Potassium-40 | Platinum-190 | Actinium-228 |
Vanadium-50 | Platinum-192 | Protoactinium-231 |
Rubidium-87 | Lead-204 |
Examples of accelerator-produced radioactive materials. (Accelerator- produced radioactive material is any material made radioactive (emits radiation spontaneously) by a particle accelerator)
Carbon-11 | Zinc-62 | Iodine-124 |
Nitrogen-13 | Gallium-66 | Iodine-125* |
Oxygen-15 | Gallium--67 | Iodine-126 |
Fluorine-18 | Germanium-68 | Xenon-127 |
Sodium-22 | Arsenic -73 | Cesium-131 |
Magnesium-28 | Selenium-73 | Promethium-145 |
Aluminum-28 | Bromine-77 | Dysprosium-157 |
Phosphorus-33 | Krypton-77 | Osmium-190 |
Argon-37 | Krypton-81 | Iridium-190 |
Potassium-43 | Rubidium-81 | Iridium-190ml |
Scandium-49 | Rubidium-82 | Platinum-193m |
Manganese-52 | Rubidium-84 | Gold -195 |
Iron-52 | Strontium-82 | Mercury-197 |
Cobalt-57 | Strontium-87m | Thallium-199 |
Cobalt-58 | Yttrium-87 | Thallium-201 |
Copper-62 | Technetium-97m | Lead-203 |
Copper-67 | Indium-111 | Bismuth-204 |
Zinc-62 | Iodine-123 |
* Excludes Iodine-125 as radioactive material, which requires licensing by either the U.S. Nuclear Regulatory Commission or an Agreement State.
C.M.R. 10, 144, ch. 220, pt. C, app 144-220-C-B