Mr.Hasegawa Motohiro from Forestry and Forest Products Research Institute measured 20,000 Bq/kg of cesium from earthworm.
The sample was taken in Kawauchi mura Fukushima, from late August to September. The air dose was 3.11 microSv/h. The soil is contaminated as 1,380,000 Bq/m2. A part of Kawauchi mura is in the evacuation area.
They also took the samples at 2 different locations in Fukushima.
Ohtamamura (60km from Fukushima)
Air dose : 0.33 microSv/h
Soil : 80,000~120,000 Bq/m2
Earthworm : 1,000 Bq/Kg
Tadami mura (150km from Fukushima)
Air dose : 0.12 microSv/h
Soil : 20,000 Bq/m2
Earthworm : 290 Bq/kg
They analyse it is because most of the cesium is stuck to the leaves. Earthworm ate leaves with soil so they were contaminated too.
Earthworm is in the bottom of the ecological chain. As biological concentration goes up, the internal exposure will be more severe.
This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.