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Well, I do remember Strontium 90 from way back in the nuclear testing age. It was well understood then that there is no such thing as a small dose, since S-90 accumulates in the bone and more and more is deposited as your intake rises ... regardless of the dose levels in the air.
Nevertheless, "officials" in Japan say there is no risk to human health. Garbage!
My thoughts today. Art
Radioactive strontium detected more than 30 km from Fukushima plant
TOKYO, April 12, Kyodo
Minute amounts of radioactive strontium have been detected in soil and plants in Fukushima Prefecture beyond the 30-kilometer zone around the crippled Fukushima Daiichi Nuclear Power Station, the science ministry said Tuesday.
It is the first time that radioactive strontium has been detected since the Fukushima plant began leaking radioactive substances after it was severely damaged by the March 11 earthquake and tsunami.
There is no safety limit set by the government for exposure to strontium, but the amount found so far is extremely low and does not pose a threat to human health, the Education, Culture, Sports, Science and Technology said.
Experts, however, expressed concern that the accumulation of strontium could have adverse health effects. When strontium enters the human body, it tends to accumulate in bones and is believed to cause bone cancer and leukemia.
Samples of soil and plants were taken March 16 to 19 from a number of locations in Fukushima Prefecture.
The government has designated the area within a 20-km radius of the plant as an evacuation zone, while people residing in areas in the 20- to 30-km ring have been asked to remain indoors. On Monday, the government expanded the evacuation zone to some municipalities beyond the 20-km radius where residents will evacuate in around a month.
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