Nous quantitativement tester l'uranium dans les cheveux humains, de sang, d'urine, de l'eau et d'autres, des animaux et des échantillons environnementaux. Nous avons également isoler U238 U235 et isotopes.
| Element | Isotope | approximate Half-life |
| Strontium (Sr) | 90 | 29 years |
| Ruthenium (Ru) | 106 | 374 days |
| Iodine (I) | 131 | 8 days |
| Cesium (Cs) | 134 | 2 years |
| Cesium (Cs) | 137 | 30 years |
| Thorium (Th) | 232 | 14 years |
| Uran (U) | 235 | 7 x 10^8 years |
| Uran (U) | 238 | 4 billion years |
Lisez à propos des tests isotope radioactif de l'uranium, l'iode et le césium via gammaspectroscopy ici
A large portion of gamma radiation largely passes through the body without interacting with tissue. X-rays behave in a similar way, but have slightly lower energy. By contrast, alpha and beta particles inside the body lose all their energy by colliding with tissue, causing damage.
Gamma rays can ionize atoms in tissue directly or cause what are known as "secondary ionizations". Because of the gamma ray's penetrating power and ability to travel great distances, it is considered the primary hazard to the general population during most radiological emergencies. In fact, when the term "radiation sickness" is used to describe the effects of large exposures in short time periods, the most severe damage almost certainly results from gamma radiation.