Surveillance of radioactive cesium in domestic foods on the Japanese market (Fiscal Years 2012 and 2013)
2015
Uekusa, Y. (National Institute of Health Sciences, Setagaya-ku, Tokyo (Japan)) | Nabeshi, H. | Nakamura, R. | Tsutsumi, T. | Hachisuka, A. | Matsuda, R. | Teshima, R.
We surveyed the concentration of radioactive cesium in foods purchased at markets in areas where possible contamination has been a concern after the Fukushima accident. In fiscal years 2012 and 2013, we surveyed 1,735 and 1,674 foods, respectively, using a NaI (Tl) scintillation spectrometer for the screening test and a gamma-ray spectrometer with a germanium semiconductor detector for the final test. Only 3 and 4 samples (0.2% of our total samples) exceeded the regulatory limit (100 Bq/kg) for radioactive cesium in fiscal years 2012 and 2013, respectively. Our surveillance indicates that the pre-shipment monitoring of foods by local governments has been working effectively.
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