Nuclear fission product
Health concerns
For introduction of radionuclides into organism, ingestion is the most important route. Insoluble compounds are not absorbed from the gut and cause only local irradiation before they are excreted.

Nuclear fission product

Section Title: Health concerns
Table Section Text: For introduction of radionuclides into organism, ingestion is the most important route. Insoluble compounds are not absorbed from the gut and cause only local irradiation before they are excreted.

Isotope	Radiation	Half-life	GI absorption	Notes

Strontium-90/yttrium-90	β	28 years	30%

Cesium-137	β,γ	30 years	100%

Promethium-147	β	2.6 years	0.01%

Cerium-144	β,γ	285 days	0.01%

Ruthenium-106/rhodium-106	β,γ	1.0 years	0.03%

Zirconium-95	β,γ	65 days	0.01%

Strontium-89	β	51 days	30%

Ruthenium-103	β,γ	39.7 days	0.03%

Niobium-95	β,γ	35 days	0.01%

Cerium-141	β,γ	33 days	0.01%

Barium-140/lanthanum-140	β,γ	12.8 days	5%

Iodine-131	β,γ	8.05 days	100%

Tritium	β	13 years	100%

Sentence(s)

⁹⁰Sr and ¹³⁷Cs are the radioisotopes.

final_sentence: ⁹⁰Sr and ¹³⁷Cs are the radioisotopes.