{"created":"2025-06-05T06:16:34.006314+00:00","id":2000096,"links":{},"metadata":{"_buckets":{"deposit":"fab67d8d-c16f-4fd7-8085-cc68e16e6fe2"},"_deposit":{"created_by":12,"id":"2000096","owner":"12","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"2000096"},"status":"published"},"_oai":{"id":"oai:junshin.repo.nii.ac.jp:02000096","sets":["1:6:82:1746836280329"]},"author_link":[],"item_10002_biblio_info_7":{"attribute_name":"bibliographic_information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2025-03-31"},"bibliographicIssueNumber":"15","bibliographicNumberOfPages":"11","bibliographicPageEnd":"85","bibliographicPageStart":"75","bibliographic_titles":[{"bibliographic_title":"純真学園大学雑誌","bibliographic_titleLang":"ja"},{"bibliographic_title":"Journal of Junshin Gakuen University, Faculty of Health Sciences","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"2011年3 月11日14時46分に東日本大震災が発生し，それに伴い東京電力福島第一原子力発電所で大規模な放射能汚染を伴う事故が発生した．原子炉を冷却するためそこで発生する汚染水は多核種除去設備（ALPS）によって，トリチウム以外の放射性物質を取り除く処理が行われている．\n日本近海におけるトリチウムの状況を把握することでALPS 処理水をはじめとした原子力発電所から排出されている処理水の海洋への影響について検討する．\n　試料は青森県から鹿児島県の海水16サンプルにおけるトリチウム濃度を測定した．比較対象として水道水，地下水をバックグラウンド試料として海水サンプルと同様の測定を行った．その結果，トリチウム濃度（BG1~3）は平均値1.23~1.27〔Bq/ℓ〕（最小値1.14〔Bq/ℓ〕~ 最大値1.31〔Bq/ℓ〕標準偏差0.04）， 海水サンプルNo. 1~16は1.01~1.31〔Bq/ℓ〕（最小値0.96〔Bq/ℓ〕~ 最大値1.42〔Bq/ℓ〕標準偏差0.03~0.05）であった．特にサンプルNo. 1 ~ 4 は福島県内浜通地区の海水で，福島第一原子力発電所より直線距離で5 ~20km 程度の地点におけるトリチウム濃度であり1.24~1.29〔Bq/ℓ〕（最小値1.15〔Bq/ℓ〕~ 最大値1.37〔Bq/ℓ〕標準偏差0.03~0.04）と他の海域と差は見られなかった．\n　1950-60年代には世界各地で大気圏内核実験によりトリチウムが環境中へ放出された．大気中も今の200倍以上のトリチウムが存在していた．また北東大西洋における海域と日本近海域のトリチウム濃度を比較した．北東大西洋における海域のトリチウム濃度は海域により大きな差が見られ，付近の原子力施設の関与が指摘されている．しかし日本近海域のトリチウム濃度は比較対象とした水道水の値と大きな差は見られなかった．\n　ただ、東京電力福島第一原子力発電所事故で海洋へ放出されたトリチウムは（ 1 ~ 5 ）×1014〔Bq〕と推計されており，いったん上昇したトリチウム濃度も今後緩やかに減少していくことが考えられる。","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"The Great East Japan Earthquake occurred at 2:46 p.m. on March 11, 2011, and an accident involving largescale\nradioactive contamination occurred at Tokyo Electric Power Company Holdings, Incorporated （TEPCO）\nFukushima Daiichi Nuclear Power Station. The contaminated water generated by the reactor was treated using a multinuclide\nremoval system （Advanced Liquid Processing System: ALPS） to remove radioactive substances other than\ntritium. In order to understand the situation of tritium concentration in the waters of and around Japan, we examined the\nimpact of the treated water discharged from nuclear power plants, including ALPS-treated water, on the ocean.\n　The tritium concentration was measured in 16 samples of seawater from Aomori to Kagoshima prefectures. As a\ncomparative object, tap water and groundwater were used as background samples（ BG1~3）） in the same way as seawater\nsamples. As a result, the tritium concentration（ BG1~3） was 1.23~1.27〔Bq/l］（ minimum value 1.14〔Bq/l〕\n~maximum value 1.31〔Bq/l〕standard deviation 0.04），seawater sample No. 1~16 was 1.01~1.31〔Bq/l〕（minimum\nvalue 0.96〔Bq/l〕 ~ maximum value 1.42〔Bq/l〕standard deviation 0.03~0.05）. The concentration of tritium in the\nHamadori area of Fukushima Prefecture, which was 1.24~1.29〔Bq/l〕（ minimum value 1.15〔Bq/l〕 ~ maximum value\n1.37〔Bq/l〕，standard deviation 0.03~0.04） at a point about 5~20 km from the Fukushima Daiichi Nuclear PowerStation.\nIn the 1950s and the 1960s, tritium was released into the environment through atmospheric nuclear tests worldwide.\nCurrently, there is >200 times more tritium in the atmosphere than the amount that should ideally exist. Tritium\nconcentrations in the northeast Atlantic Ocean and Japan were compared. The concentration of tritium in the northeast\nAtlantic Ocean varies greatly depanding on the sea area, and it has been pointed out that nearby nuclear facilities are\ninvolved. However, the tritium concentration in the waters around Japan did not differ significantly from the value of tap\nwater used for comparison.\nThe tritiumu released into the ocean due to the accident at TEPCO’s Fukushima Daiichi Nuclear Power Station is\nestimated to be（ 1‒5）×1014 [Bq], and it is thought that the tritium concentration will gradually decrease in the future.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10002_full_name_3":{"attribute_name":"著者（英）","attribute_value_mlt":[{"affiliations":[{"affiliationNames":[{"affiliationName":"JUNSHIN GAKUEN University","affiliationNameLang":"en"}]}],"familyNames":[{"familyName":"ARAI","familyNameLang":"en"}],"givenNames":[{"givenName":"Shoichi","givenNameLang":"en"}],"names":[{"name":"Shoichi, ARAI","nameLang":"en"}]}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"純真学園大学","subitem_publisher_language":"ja"},{"subitem_publisher":"JUSHIN GAKUEN UNIVERSITY","subitem_publisher_language":"en"}]},"item_10002_source_id_9":{"attribute_name":"item_10002_source_id_9","attribute_value_mlt":[{"subitem_source_identifier":"2186-6481","subitem_source_identifier_type":"ISSN"}]},"item_1710308327429":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"【原著】全国各地における海水中のトリチウム濃度","subitem_title_language":"ja"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"純真学園大学","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"新井, 正一","creatorNameLang":"ja","creatorNameType":"Personal"}],"familyNames":[{"familyName":"新井","familyNameLang":"ja"}],"givenNames":[{"givenName":"正一","givenNameLang":"ja"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-06-10"}],"displaytype":"detail","filename":"【原著】全国各地における海水中のトリチウム濃度.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_5","url":{"url":"https://junshin.repo.nii.ac.jp/record/2000096/files/【原著】全国各地における海水中のトリチウム濃度.pdf"},"version_id":"e6c7f57b-5eb1-4438-8c34-e2e54ceca2ef"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"トリチウム","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"海水","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"放射線モニタリング","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"原子力発電所事故","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"放射性水質汚染","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"tritium","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"seawater","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"radiation monitoring","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"nuclear power plant accident","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"radioactive water contamination","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"item_resource_type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"【原著】全国各地における海水中のトリチウム濃度","item_type_id":"10002","owner":"12","path":["1746836280329"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-06-10"},"publish_date":"2025-06-10","publish_status":"0","recid":"2000096","relation_version_is_last":true,"title":["【原著】全国各地における海水中のトリチウム濃度"],"weko_creator_id":"12","weko_shared_id":-1},"updated":"2025-06-09T06:17:14.440433+00:00"}