Surveillance of Radioactive Cesium in Foods

We surveyed foods on the market from areas that had been exposed to radioactive materials contamination following the Fukushima accident. We used a NaI (Tl) scintillation spectrometer for the screening tests and a germanium semiconductor detector for the final tests. Test results from 1,427 samples...

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Veröffentlicht in:	Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 2013/04/25, Vol.54(2), pp.131-150
Hauptverfasser:	NABESHI, Hiromi, TSUTSUMI, Tomoaki, IKARASHI, Atsuko, HACHISUKA, Akiko, MATSUDA, Rieko
Format:	Artikel
Sprache:	jpn
Schlagworte:	Cesium Radioisotopes - analysis Dairy Products - analysis Food Analysis - instrumentation Food Analysis - methods Food Contamination, Radioactive - analysis foods on the market Fruit - chemistry Fukushima Nuclear Accident Germanium Ginkgo Nuts - chemistry Radiation Monitoring - instrumentation Radiation Monitoring - methods Radioactive Hazard Release screening method Seafood - analysis Semiconductors Spectrometry, Gamma - instrumentation Spectrometry, Gamma - methods surveillance of radioactive cesium Vegetables - chemistry
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Beschreibung
Zusammenfassung:	We surveyed foods on the market from areas that had been exposed to radioactive materials contamination following the Fukushima accident. We used a NaI (Tl) scintillation spectrometer for the screening tests and a germanium semiconductor detector for the final tests. Test results from 1,427 samples showed that 6 samples (0.4%) exceeded the regulatory limit of 500 Bq/kg. Considering the detection rate of radioactive cesium in each food category, we suggest that it is necessary to continue monitoring fruits such as chestnuts and ginkgo nuts, mushrooms (especially raw wood-shiitake), mountain vegetables, and sea fish.
ISSN:	0015-6426 1882-1006
DOI:	10.3358/shokueishi.54.131