{"created":"2023-05-18T10:10:22.955712+00:00","id":1976,"links":{},"metadata":{"_buckets":{"deposit":"2e6cb7f5-4c67-4de5-992b-7a15c01e5574"},"_deposit":{"created_by":5,"id":"1976","owners":[5],"pid":{"revision_id":0,"type":"depid","value":"1976"},"status":"published"},"_oai":{"id":"oai:yamanashi.repo.nii.ac.jp:00001976","sets":["63:152:176"]},"author_link":["25410"],"control_number":"1976","item_2_alternative_title_1":{"attribute_name":"タイトル(別表記)","attribute_value_mlt":[{"subitem_alternative_title_language":"en"}]},"item_2_biblio_info_7":{"attribute_name":"bibliographic_information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1978","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"115","bibliographicPageStart":"112","bibliographicVolumeNumber":"29","bibliographic_titles":[{"bibliographic_title":"山梨大學工學部研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Reports of the Faculty of Engineering, Yamanashi University","bibliographic_titleLang":"en"}]}]},"item_2_creator_2":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorAlternatives":[{"creatorAlternative":"片山, けい子","creatorAlternativeLang":"ja"}],"creatorNames":[{"creatorName":"平山, けい子","creatorNameLang":"ja"},{"creatorName":"ヒラヤマ, ケイコ","creatorNameLang":"ja-Kana"},{"creatorName":"Hirayama, Keiko","creatorNameLang":"en"}],"familyNames":[{"familyName":"平山","familyNameLang":"ja"},{"familyName":"ヒラヤマ","familyNameLang":"ja-Kana"},{"familyName":"Hirayama","familyNameLang":"en"}],"givenNames":[{"givenName":"けい子","givenNameLang":"ja"},{"givenName":"ケイコ","givenNameLang":"ja-Kana"},{"givenName":"Keiko","givenNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"25410","nameIdentifierScheme":"WEKO"}]}]},"item_2_description_5":{"attribute_name":"内容","attribute_value_mlt":[{"subitem_description":"A marked elevation in COD of the water treated by activated sludge was observed, which suggested the existence of nitrite-N in high concentration. In such a case, it was impossible to determine DO concentration with normal addition of alkali-iodide-azide reagent. In order to find an alternative method which could avoid this difficulty, the effect of nitrite on COD value determined by potassium permanganate at 100℃ and on dissolved oxygen determination by azide modification was investigated. Chemical oxygen demand of 1mg/l nitrite-N solution was 1.1mg/l that was equal to theoretical oxygen demand for oxidation of nitrite-N to nitrate-N. The above fact suggests that the increase of COD at the presence of nitrite-N has to be taken into consideration in determining COD. With an addition of only 1mι of alkali-iodide-azide reagent, the part exceeding over 2.15mg of nitrite-N (about 15 to 20mg/l nitrite-N) were found still liberating iodine continuously and preventing analysis of DO value. It is then found necessary to analyze concentration of nitrite-N before DO determination and to add adequate amount of alkali-iodide-azide reagent, if samples contain more than 15 to 20mg/l nitrite-N.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_2_identifier_registration":{"attribute_name":"identifier_registration","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.34429/00001969","subitem_identifier_reg_type":"JaLC"}]},"item_2_publisher_8":{"attribute_name":"item_2_publisher_8","attribute_value_mlt":[{"subitem_publisher":"山梨大学工学部","subitem_publisher_language":"ja"}]},"item_2_source_id_11":{"attribute_name":"item_2_source_id_11","attribute_value_mlt":[{"subitem_source_identifier":"AN0024491X","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_9":{"attribute_name":"item_2_source_id_9","attribute_value_mlt":[{"subitem_source_identifier":"0513-1871","subitem_source_identifier_type":"PISSN"}]},"item_2_version_type_20":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-02-27"}],"displaytype":"detail","filename":"KJ00000157949.pdf","filesize":[{"value":"308.2 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KJ00000157949.pdf","objectType":"fulltext","url":"https://yamanashi.repo.nii.ac.jp/record/1976/files/KJ00000157949.pdf"},"version_id":"623dcec5-123a-4ecb-bb8c-aa62e94fb1eb"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"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":"Influence of Nitrite on Chemical Oxygen Demand Determined by Potassium Permanganate at 100^oC and on Dissolved Oxygen Dtermination by Azide Modification","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Influence of Nitrite on Chemical Oxygen Demand Determined by Potassium Permanganate at 100^oC and on Dissolved Oxygen Dtermination by Azide Modification","subitem_title_language":"en"}]},"item_type_id":"2","owner":"5","path":["176"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-03-13"},"publish_date":"2009-03-13","publish_status":"0","recid":"1976","relation_version_is_last":true,"title":["Influence of Nitrite on Chemical Oxygen Demand Determined by Potassium Permanganate at 100^oC and on Dissolved Oxygen Dtermination by Azide Modification"],"weko_creator_id":"5","weko_shared_id":-1},"updated":"2025-03-06T06:29:55.244499+00:00"}