@article{oai:repository.naro.go.jp:00003131,
 author = {木方, 展治 and KIHOU, Nobuharu and 大瀬, 健嗣 and OHSE, Kenji and 谷山, 一郎 and TANIYAMA, Ichiro},
 journal = {農業環境技術研究所報告, Bulletin of National Institute for Agro-Environmental Sciences},
 month = {Mar},
 note = {The authors measured ^<131>I, ^<134>Cs and ^<137>Cs radioactive concentration of 56 vegetable samples which was collected in Ibaraki, Tochigi, Gunma and Chiba Prefecture on the basis of the request of the Ministry of Agriculture, Forestry and Fisheries (MAFF) and the prefectural governments just after the accident of the Fukushima Daiichi Nuclear Power Plant (FDNPP) from March 18 to 25, 2011. The prefectural governments put the data of ^<131>I and radioactive Cs concentration of vegetables on the internet. The MAFF used the data to judge the shipment regulation policy of contaminated vegetables. This paper shows the data of ^<134>Cs and ^<137>Cs concentration of vegetables which has been never published. Spinach (Spinacia oleracea) grown outdoors which fecture on March 18 exceeded the provisional regulation value for radioiodine (2000 Bq kg^<-1>). Garland chrysanthemum (Glebionis coronaria) which was collected in Mooka and Sakura City and spinach which was collected in Kaminokawa Town of Tochigi Prefecture on March 24 exceeded the provisional regulation value for radioiodine. Spinach grown outdoors which was collected in Isezaki City of Gunma Prefecture on March 19 exceeded the provisional regulation value of radioiodine. eight green vegetables (including spinach and "Kakina" (Brassica rapa)) exceeded the provisional regulation value of radiocesium (^<134>Cs+^<137>Cs: 500 Bq kg^<-1>). The range of ^<131>I /^<137>Cs concentration ratio of spinach was from 9.7 to 20.2 in Ibaraki Prefecture in March 18, 9.2 on March 24 in Tochigi Prefecture, from 5.7 to 6.4 on March 19 and from 4.9 to 9.2 on March 22-25 on Gunma Prefecture. The higher ratio was observed in Ibaraki Prefecture. However, ^<131>I / ^<137>Cs ratio between vegetables at the same location had large differences; from 1.6 of cucumber to 31.8 of garland chrysanthemum on March 24 in Tochigi Prefecture and from 2.2 of water melon (Citrullus lanatus) to 10.1 of "Mitsuba" (Cryptotaenia japonica). As stated above, the radioactive substance concentration and component of vegetables had large range between the area, date, vegetable species or cultivation methods.},
 pages = {11--21},
 title = {福島第一原発事故直後の関東地方における野菜類の放射性物質濃度},
 volume = {34},
 year = {2015},
 yomi = {キホウ, ノブハル and オオセ, ケンジ and タニヤマ, イチロウ}
}