Radioisotope iodine-131
Radioisotope iodine-131 is the most common radioactive isotope of iodine formed during uranium fission in atomic reactors. The half-life period is 8.04 days. It belongs to group B of radiation danger. It accumulates in the thyroid gland (critical organ). It is a beta and gamma emitter. Photon energy: 0.72, 0.63, 0.36, 0.03 MeV. Beta radiation energy: 0.248, 0.304, 0.334, 0.607, 0.630, 0.807 MeV. Permissible volumetric activity DOA in atmospheric air is 18.0 Bq/m³ (4.86 - 13 Ki/l), permissible specific activity DUA in water is 57.0 Bq/kg (1.54 - 9 Ki/kg)
Source: "RULES FOR ENSURING SANITARY AND HYGIENIC REGIMES DURING CONSTRUCTION AND OPERATION OF THERMAL ENERGY COMPLEX OBJECTS IN CONDITIONS OF RADIOACTIVE CONTAMINATION OF THE AREA"
(approved by the Ministry of Energy of Russia 20.11.96)
Понятие «радионуклид йод-131» мужского рода.
| Падеж | Единственное число | Множественное число |
|---|---|---|
| Р | радионуклида йод-131 | радионуклидов йод-131 |
| Д | радионуклиду йод-131 | радионуклидам йод-131 |
| В | радионуклид йод-131 | радионуклиды йод-131 |
| Т | радионуклидом йод-131 | радионуклидами йод-131 |
| П | радионуклиде йод-131 | радионуклидах йод-131 |