{"created":"2023-05-15T14:33:11.048595+00:00","id":43023,"links":{},"metadata":{"_buckets":{"deposit":"45844d02-7856-410b-a4d7-340bea321315"},"_deposit":{"created_by":1,"id":"43023","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"43023"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00043023","sets":["1"]},"author_link":["428183","428181","428180","428185","428182","428184"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"4179","bibliographicPageStart":"4174","bibliographicVolumeNumber":"35","bibliographic_titles":[{"bibliographic_title":"Environmental Science & Technology"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In order to evaluate the impact of the 1999 criticality accident in Tokai-mura on the U isotope composition in soils, U isotopes (235U and 238U) were determined with inductively coupled plasma-mass spectrometry (ICP-MS) for soil core samples collected on the JCO grounds after the accident. The 235U/238U ratios were higher than the natural ratio in most samples. The highest ratio observed was 0.0262. Although vertical profiles of the 235U/238U ratio differed among the soil cores, the ratios tended to be high at the surface and decreased with depth. The U concentration also changed with depth. The percentages of 235U in the excess U, estimated from the positive correlation between U concentration and the 235U/238U ratio in soil samples, were less than 4 % by mass (mostly 1 - 3 %), and were much lower than the enrichment of the U used in the uranium conversion building at the time of the criticality accident (18.8 %). These findings indicate that enriched U had been released before the criticality accident during the U processing at JCO in connection with the reconversion of light water reactor fuel. Since the range of the U concentrations found was comparable to the range of uncontaminated Japanese surface soils, the amount of U added to the soil was judged negligible from a radiation protection viewpoint.","subitem_description_type":"Abstract"}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0013-936X","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yoshida, Satoshi"}],"nameIdentifiers":[{"nameIdentifier":"428180","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Muramatsu, Yasuyuki"}],"nameIdentifiers":[{"nameIdentifier":"428181","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tagami, Keiko"}],"nameIdentifiers":[{"nameIdentifier":"428182","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉田 聡","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"428183","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"村松 康行","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"428184","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田上 恵子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"428185","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Determination of uranium isotopes in soil core samples collected on the JCO grounds after the criticality accident.","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Determination of uranium isotopes in soil core samples collected on the JCO grounds after the criticality accident."}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2002-12-20"},"publish_date":"2002-12-20","publish_status":"0","recid":"43023","relation_version_is_last":true,"title":["Determination of uranium isotopes in soil core samples collected on the JCO grounds after the criticality accident."],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-16T00:32:10.122132+00:00"}