The Radioactivity Measurement of Milk from the Cow Supplied with the Meadow Grass Grown in Ibaraki-prefecture, after the Nuclear Power Plant Accident

Abstract

The radioactivity of ¹³¹I, ¹³⁴Cs and ¹³⁷Cs in soil, milk as well as pasture (Italian ryegrass) and well water supplied to the cows was measured. The samples were collected from Animal resource science center located at Ibaraki-prefecture, about 130km south of Fukushima nuclear power plant, 3 and 12 weeks after the accident. It was found that the radioactive nuclides included in meadow grass were promptly transferred to the milk. But the radioactivity of these nuclides were lower than the provisional government regulated value, 300 and 200Bq/kg for radioactive I and Cs, respectively.