Residual Radioactive Material Guidelines in Food

March 19, 2011 2:49 PM

In response to the Fukushima nuclear accident, the Food Sanitation Law was established to set provisional standards of acceptable radiation levels in food.

Radioiodine (Iodine 131) becquerel / kg
Infant milk 100
Drinking water, milk, dairy products 300
Vegetables (except potatoes and roots vegetables) 2000

Uranium (U-235) becquerel / kg
Drinking water, milk, dairy products 20
Vegetables, grains, meat, eggs, fish, etc. 100

Radioactive cesium (Cs-134, Cs-137) becquerel / kg
Infant foods 20
Drinking water, milk, dairy products 200
Vegetables, grains, meat, eggs, fish, etc. 500

Alpha-radionuclide of plutonium and transuranium element
(Plutonium (Pu)-238, Pu-239, Pu-240, Pu-242, Americium (Am)-241, Curium (Cm)-242,
Cm-243, Cm-244) becquerel / kg
Infant foods 1
Drinking water, milk, dairy products 1
Vegetables, grains, meat, eggs, fish, etc. 10

At the time of the Chernobyl accident, the maximum accepted value of the sum of Cs-134 and Cs-137 was 370 becquerel / kg.

Regarding these standard values, the guidelines of the Codex Alimentarius stipulate the following:

Radioiodine and Uranium
(Sum of Iodine-129, Iodine-131, Strontium (Sr)-90, Ruthenium (Ru) -106, U-235 becquerel / kg)
Infant foods 100
General foods 1000

Radioactive Cesium
(Sum of Cs-134, Cs-137, S-35, Co-60, Sr-89, Ru-103, Cerium (Ce)-144, Iridium-192 becquerel / kg)
Infant foods and general foods 1000

Alpha-radionuclide of plutonium and transuranium element
(Sum of Pu-238, Pu-239, Pu-240, Am-241 becquerel / kg)
Infant foods 1
General foods 10

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