Effective Half-Life
This calculates the effective half-life, taking into account the metabolism of radioactive substances ingested into the body.
Radioactive substances ingested into the body are excreted through metabolism. The biological half-life is the time it takes for the amount to be reduced by half through metabolism.
Radioactive iodine tends to accumulate in the thyroid gland.
Strontium 90 and calcium 45 are incorporated into the bones, and their biological half-lives are long, at 50 years.
Strontium 90 and calcium 45 are incorporated into the bones, and their biological half-lives are long, at 50 years.
| \(\normalsize Effective half-life\\ (1)\ \large \frac{1}{T_{effective}}=\frac{1}{T_{physical}}+\frac{1}{T_{biological}}\\ \) |
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