名古屋市における食品の放射性物質検査

摘要

Following the Fukushima nuclear plant accident in Mar. 2011， the examination of radioactive contamination in foods is being carried out in Nagoya. During the period between 30 Mar. 2011 and 31 Oct. 2012, a total of 300 food samples were collected and the concentrations of radioactive nuclides were determined by means of γ-ray spectrometry using a high-purity germanium semiconductor detector. The results of analysis indicate that the concentrations of radioactive iodine (Ⅰ) and cesium (Cs) were below the regulatory limits. Radioactive Ⅰ (~(131)Ⅰ) was detected in 7 samples which belonged to the categories of green and yellow vegetables and other vegetables. Radioactive Cs (~(134)Cs and ~(137)Cs) was detected in 60 samples which belonged to the categories of rice and its processed products, potatoes and its processed products, nuts and seeds, green and yellow vegetables, other vegetables, fruits, mushrooms, fishes and shellfishes, processed sea foods, meat, milk and dairy products and other beverages.%当市では2011年3月に発生した福島原発事故を受けて.ゲルマニウム半導体検出器付きガンマ線スぺクトロメータにより,市内を流通する食品の放射性物質検査を開始した.2011年3月30日から2012年10月31日までに300検体の検査を行った.暫定規制値および2012年4月から施行された基準値を超えた検体はなかった.放射性ョゥ素(~(131)Ⅰ)は緑黄色野菜およびその他の野菜7検体から検出された.放射性セシウム(~(134)Csおよび~(137)Cs)は60検体から検出された.検出された食品群は,米•加工品,いも•加工品,種実類.緑黄色野菜,その他の野菜,生果,きのこ類,生魚介類,魚介加工品.畜肉,牛乳•乳製品およびその他の嗜好飲料であった.