They find black substance in many locations of Tokyo.
290,000 Bq/kg of extremely highly concentrated cesium was also found at 18km (11.18 mi) from Japanese National Diet, reported by Mr. Oyama, a Minamisoma city councilor’s radiation map.
①
Mizumoto park [Link]
2012/5/20
The black substance (Algae)
Cs-134 74,000Bq/kg ± 10%
Cs-137 120,000Bq/kg ± 10%
Total 190,000Bq/kg ± 10%
Soil around the black substance
Cs-134 2,959 ± 296Bq/kg
Cs-137 4,121 ± 412Bq/kg
Total 7,080 ± 1,001Bq/kg
②
The center of Mizumoto park
2012/5/20
The black substance
Cs-134 89,000Bq/kg ± 10%
Cs-137 150,000Bq/kg ± 10%
Total 240,000Bq/kg ± 10%
Soil around the black substance
Cs-134 694 ± 69Bq/kg
Cs-137 938 ± 94Bq/kg
Total 1,631 ± 231Bq/kg
③
Higashikanamachi Katsushika
2012/5/20
The black substance
Cs-134 110,000Bq/kg ± 10%
Cs-137 180,000Bq/kg ± 10%
Total 290,000Bq/kg ± 10%
Soil around the black substance
Cs-134 398 ± 40Bq/kg
Cs-137 628 ± 63Bq/kg
Total 1,027 ± 145Bq/kg
④
Higashikanamachi Katsushika
2012/5/20
The black substance
Cs-134 110,000Bq/kg ± 10%
Cs-137 170,000Bq/kg ± 10%
Total 280,000Bq/kg ± 10%
Soil around the black substance
Cs-134 3,071 ± 307Bq/kg
Cs-137 4,292 ± 429Bq/kg
Total 7,363 ± 1,041Bq/kg
The picture above was taken in July 2009, but you see the algae on street gutter, which means it has been there since before 311.
According to the study of Pathological anatomist, Yury Bandazhevsky from Belarus, 90% of the children in Homyel to have 37 – 74Bq/kg of cesium measured from their cardiac muscle showed abnormal electrocardiogram.
You breath in the particles of black substance to cause severe internal exposure. This is why black substance is significantly dangerous.
The video below records the radiation level of Mizumoto park, where they found black substance. It was over 4μSv/h on soil. You see children play around without even protective clothing.
Iori Mochizuki