{"created":"2023-05-15T14:39:03.651933+00:00","id":53658,"links":{},"metadata":{"_buckets":{"deposit":"d26e675d-9f4f-4d42-86f6-fffa96e1c803"},"_deposit":{"created_by":1,"id":"53658","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"53658"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00053658","sets":["2"]},"author_link":["547693","547694","547697","547696","547695"],"item_10003_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-06","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"5148","bibliographicVolumeNumber":"31","bibliographic_titles":[{"bibliographic_title":"Waste Management Symposium Proceedings"}]}]},"item_10003_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In the environment, Ra occurs naturally and is distributed widely in environmental materials, such as rock, soil, water and plants; however, its concentration is extremely low. Thus, soil-to-plant transfer factor (TF) data obtained under natural conditions are limited. In this study, we determine the concentrations of Ra-226 in brown rice and associated paddy soils collected from 11 locations throughout Japan to obtain TFs. The radioactivity was measured with a Ge detector system for soil samples and a liquid scintillation counting system for brown rice after radiochemical separation. The recoveries of Ba, used as a chemical yield tracer for Ra, were more than 97% for all the samples. The concentrations of Ra-226 in paddy soil samples ranged from 20 to 65 Bq/kg-dry soil, and those in the brown rice samples ranged from 8 to 65 mBq/kg-dry except for two samples (