In the town in the 20km evacuation area, Minami soma shi, more than half of the students of elementary school and junior high school students turned out to be internally exposed.
Among 527 samples:
- 199 → 10 Bq/kg
- 65 → 10~20 Bq/Kg
- 3 → 20~30 Bq/Kg
- 1 → 30~35 Bq/Kg
Newspaper says, adults take 100 days to detox it all, children take 30 days to detox it all.
However, this comment is questionable.
30 Bq/Kg means 600 Bq in whole body if the child weighs 20kg.
This is only Cs-137, so including Cs-134, it would be about 1,200 Bq.
Strontium is likely to be in his body about 300 Bq, so the total can be nearly 1,500 Bq.
“children take 30 days to detox it all”
It has been longer than 7 months since 311. Children must have been detoxing it everyday.
This number, “1,500 Bq” is after the daily detoxing. so it does not make any sense.
Additionally, Strontium is hard to be detoxed from body.
Finally, a question remains: what about the rest of the kids?
(Source)