{"created":"2023-05-15T14:39:20.344245+00:00","id":54033,"links":{},"metadata":{"_buckets":{"deposit":"05a17d09-b7ba-485c-8319-ab0f43c1eedc"},"_deposit":{"created_by":1,"id":"54033","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"54033"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00054033","sets":["2"]},"author_link":["551588","551589","551587","551590"],"item_10003_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"6.6","bibliographicPageEnd":"6","bibliographicPageStart":"1","bibliographicVolumeNumber":"P1326","bibliographic_titles":[{"bibliographic_title":"Naturally Occurring Radioactive Material (NORM) (IAEA Proceedings Series)"}]}]},"item_10003_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We determined concentrations of total Th and U in 112 Japanese agricultural soil samples (50 paddy field and 62 upland field soil samples) by ICP-MS after microwave digestion. The average concentrations of total Th and U in the paddy field soil samples were 5.7 mg kg-1 and 2.8 mg kg-1, respectively, while those in the upland field soil samples were 5.5 mg kg-1 and 2.6 mg kg-1, respectively. These Th and U concentrations showed no differences between paddy field and upland field soil samples. Concentration ratios of U/Th in paddy field and upland field soils were 0.53 and 0.52 on average, respectively, which were much higher than those in Japanese non-agricultural fields (0.23). The results implied that phosphatic fertilizers, which have high U concentrations, increased the total U concentration in the agricultural fields. Thus, using the natural U/Th ratio in non-agricultural areas, we estimated the excess amount of U. About 52% of total U in paddy field soils (ca. 1.5 mg kg-1 of U on average) and 50% of total U in upland field soils (ca. 1.3 mg kg-1 of U on average) were calculated as excess amounts of U. Thus using of phosphatic fertilizers in agricultural fields makes only a small contribution as external radiation to the general population.","subitem_description_type":"Abstract"}]},"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":"Uchida, Shigeo"}],"nameIdentifiers":[{"nameIdentifier":"551587","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tagami, Keiko"}],"nameIdentifiers":[{"nameIdentifier":"551588","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"内田 滋夫","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"551589","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田上 恵子","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"551590","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":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Estimation of the amount of anthropogenic uranium in 112 Japanese agricultural soil samples due to application of phosphatic fertilizers","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Estimation of the amount of anthropogenic uranium in 112 Japanese agricultural soil samples due to application of phosphatic fertilizers"}]},"item_type_id":"10003","owner":"1","path":["2"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-08-19"},"publish_date":"2008-08-19","publish_status":"0","recid":"54033","relation_version_is_last":true,"title":["Estimation of the amount of anthropogenic uranium in 112 Japanese agricultural soil samples due to application of phosphatic fertilizers"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:05:39.234127+00:00"}