Radiation in Japan: 17.9 Becquerels/kg of Cesium from School Lunch Milk, EX-SKF, December 4, 2011:
Despite the protest from the milk industry and the milk distributors, Chiyoda-ku, one of the 23 Special Wards in Tokyo, conducted the analysis of the food served in the school lunches at elementary schools, middle schools, kindergartens and nursery schools in the ward.
At one private nursery school, 17.9 becquerels/kg of radioactive cesium was detected. [...]
Results indicate the milk was from a factory in Miyagi Prefecture.
Translated from Japanese here
In the United States, the Environmental Protection Agency’s ‘maximum contaminant level’ for milk is 3 picocuries per liter (pCi/l).
To compare, 17.9 Bq/kg must be converted to pCi/l.
Using the conversion factors below, the Tokyo nursery school’s milk had 485.09 pCi/l or over 160 times the EPA’s maximum contaminant level.
“EPA lumps these gamma and beta emitters together under one collective MCL [Maximum Contaminant Level], so if you’re seeing cesium-137 in your milk or water, the MCL is 3.0 picocuries per liter; if you’re seeing iodine-131, the MCL is 3.0; if you’re seeing cesium-137 and iodine-131, the MCL is still 3.0.” -Forbes.com
- 27.1 pCi = 1 Bq
- 1 kg of milk = 1 liter of milk
Published: December 5th, 2011 at 12:25 pm ET