{"created":"2023-07-27T06:52:23.677157+00:00","id":46284,"links":{},"metadata":{"_buckets":{"deposit":"3106fc41-528b-495c-ad90-3b0d9766e6ff"},"_deposit":{"created_by":18,"id":"46284","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"46284"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00046284","sets":["2812:2813:2827"]},"author_link":["80195","59"],"item_9_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007-03","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"8p.","bibliographicVolumeNumber":"2004-2006","bibliographic_titles":[{"bibliographic_title":"平成18(2006)年度 科学研究費補助金 基盤研究(B) 研究成果報告書"},{"bibliographic_title":"2006 Fiscal Year Final Research Report","bibliographic_titleLang":"en"}]}]},"item_9_creator_33":{"attribute_name":"著者別表示","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{}],"nameIdentifiers":[{},{}]}]},"item_9_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"1997年のナホトカ号事故で重度に汚染された海岸においても,海岸砂等については,多環芳香族炭化水素(PAHs)濃度はほぼバックグラウンドに近いところまで汚染が回復している.残留重油は岩の窪みなど一部に存在している程度である.ただし,残留重油中のPAHs濃度は,事故後2年までに約1/3に減少したものの,7年後にもほぼ同じ濃度であり,残留重油中のPAHは長期にわたって存在し続けることが分かった.\n2年間にわたるモニタリングの結果,沿岸域河口部の河川水と河口(表層)底質のPAHの分配に関しては,底質の有機物含有量が支配因子であり,有機物あたりの分配係数Kocはオクタノール分配係数Kowとよい相関があることが分かった.すなわち,線形自由エネルギーモデルが成立することが分かった.\n表層底質と河川水とのPAHsの交換速度は,近似的に平衡とできる程度に速いことが分かった.以上の知見から,ローカルな沿岸環境系において,例えば生物濃縮のように高濃度にPAHが蓄積するような可能性はきわめて低いと考えられる.\n実験室で,PAHsの底質への収着に対する溶存有機物質の影響を検討したが,溶存物質の影響は環数が多いほど大きくなること,現象の正確な記述には,溶存有機物質の底質への吸着も考慮すべきことが明らかになった.\n以上のように,沿岸部では,河川水あるいは海水と海岸の粒子等のメディア等の間では,物質の交換は,残留重油相が存在しない場合,かなり速くおこり,特に河口部では擬似的な平衡が仮定できる程度である.固形物に収着されているPAHsは,主に有機物相に存在し,その収着量は,有機物含有量と相関があり,環数が大きいほど分配係数は大きい.また,その分配係数は線形自由エネルギーモデルで予測がある程度可能である.","subitem_description_type":"Abstract"},{"subitem_description":"The concentration of polycyclic aromatic hydrocarbons (PAHs) in the coastal sands and other media of a heavily polluted site of the Nakhodka oil spill were found to be as low as the background after the 7 years of the accident. Oil residues were found only in the hollows and cavities of the rocks, and PAH contents in those residues decreased to one thirds of the original value in two years, but after that, PAHs contents remained at the same level, suggesting that PAHs will remain long as oil residues.\nTwo years of monitoring of PAHs in the river water, SS and sediments revealed that the main sorbent of the PAHs in the sediments was organic matter. Organic matter based partition coefficient Koc was found to be well correlated to octanol-water partition coeffient, and can be described by using liner free-energy assumption.\nThe exchange of PAHs between surface sediments and river water was sufficiently fast for allowing us to consider that the partition between the sediments and water is approximately in equilibrium.\nIn the laboratory experiments, we investigated the effect of dissolved organic matter (DOM) on the partition of PAHs between sediments and water, and found that as the number of aromatic rings increases, the effect of DOM increases, and also found that for the precise description of the phenomena, we have to take into account the adsorption of DOM to the sediment particles.\nAs described above, in the coastal environment, exchange between water and coastal particulate media is sufficiently fast to remove the pollutants from the polluted sites in several years, and at the mouth of the river, that is so fast that we can assume an approximate equilibrium. Sorption of PAHs to particulate matter is mainly to organic matter, and the partition coefficient is larger as the number of aromatic rings increases, and can be roughly estimated by using linear free energy assumptions.","subitem_description_type":"Abstract"}]},"item_9_description_22":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"研究課題/領域番号:16310006, 研究期間(年度):2004-2006","subitem_description_type":"Other"},{"subitem_description":"出典：「重油で汚染された沿岸環境系における多環芳香族炭化水素の動態解析と将来予測」研究成果報告書　課題番号16310006\n  (KAKEN：科学研究費助成事業データベース（国立情報学研究所）)\n　　　本文データは著者版報告書より作成","subitem_description_type":"Other"}]},"item_9_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24517/00052617","subitem_identifier_reg_type":"JaLC"}]},"item_9_publisher_17":{"attribute_name":"公開者","attribute_value_mlt":[{"subitem_publisher":"金沢大学理工研究域フロンティア工学系"}]},"item_9_relation_28":{"attribute_name":"関連URI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"https://kaken.nii.ac.jp/search/?qm=80234087"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/search/?qm=80234087","subitem_relation_type_select":"URI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16310006/"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16310006/","subitem_relation_type_select":"URI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-16310006/163100062006kenkyu_seika_hokoku_gaiyo/"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-16310006/163100062006kenkyu_seika_hokoku_gaiyo/","subitem_relation_type_select":"URI"}}]},"item_9_version_type_25":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-11-01"}],"displaytype":"detail","filename":"SC-PR-KAWANISHI-T-kaken 2007-8p.pdf","filesize":[{"value":"146.6 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"SC-PR-KAWANISHI-T-kaken 2007-8p.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/46284/files/SC-PR-KAWANISHI-T-kaken 2007-8p.pdf"},"version_id":"83462816-4f3e-492b-96e0-930b82622cea"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"重油で汚染された沿岸環境系における多環芳香族炭化水素の動態解析と将来予測","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"重油で汚染された沿岸環境系における多環芳香族炭化水素の動態解析と将来予測"},{"subitem_title":"Analysis and prediction of the dynamics of Polycyclic aromatic hydrocarbons in the coastal environment polluted by heavy oil","subitem_title_language":"en"}]},"item_type_id":"9","owner":"18","path":["2827"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-11-01"},"publish_date":"2018-11-01","publish_status":"0","recid":"46284","relation_version_is_last":true,"title":["重油で汚染された沿岸環境系における多環芳香族炭化水素の動態解析と将来予測"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2023-07-27T14:34:03.372336+00:00"}