Concept explainers
A worker accidentally ingested an unknown amount of σUCo activity. His body burden was measured by whole-body counting from day 1 until day 14 after the ingestion, with the following results:
The whole-body intake retention fraction (IRF) for ingested 60Co is given as
(a) Estimate the amount of ingested activity
(b) What was the committed dose from the ingested radiocobalt?
(a)
The amount of ingested activity.
Answer to Problem 13.22P
Explanation of Solution
Given info:
The body burden was measured by whole-body counting from day 1 until day 14 after the ingestion with the following results
Day: 1, 2, 3, 4, 7, 14
kBq: 75.3 63.4 54.3 49.2 42.0 31
The whole-body retention function for ingested
Formula used:
The intake from a whole body measurement
Here,
Calculation:
So,
For 1 day, we have
Simlarly, intake from each of the whole body measurements
Thus mean,
(b)
What was the committed dose from the ingested radiocobalt?
Answer to Problem 13.22P
Explanation of Solution
Given info:
The body burden was measured by whole-body counting from day 1 until day 14 after the ingestion with the following results Day: 1, 2, 3, 4, 7, 14
kBq: 75.3 63.4 54.3 49.2 42.0 31
The whole-body retention function for ingested
Formula used:
The cumulated activity,
Substituting the values, we get
The dose is given by
Here,
Calculation:
So,
For 1 day, we have
Simlarly, intake from each of the whole body measurements
Thus mean,
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