Iodine 131 Half Life at Life

Iodine 131 Half Life. Beta particles and gamma radiation. Half life of iodine 131 is 8.02 days.

I131 has a half life of slightly more than 8 days. Selectively accumulating in the thyroid gland, iodine i 131 emits beta and gamma particles, thereby killing thyroid. We directly calculated the decay constant per day and kept the half life also in days.

HalfLife

Given orally, it is concentrated in the thyroid, where the β particles destroy the gland. It is employed in medicine to monitor thyroid gland functioning, to treat goitre and thyroid cancer, and to locate tumours of the brain and of the liver. Thyroid is the critical organ for iodine. A lot is said about the short half life of i131, the type of radioactive iodine used for thyroid treatment.