Daisuke Tsumune, Takaki Tsubono, Kazuhiro Misumi, Kazuyuki Sakuma, Yuichi Onda
{"title":"福岛第一核电站事故后河道排放对海洋中 137Cs 的影响","authors":"Daisuke Tsumune, Takaki Tsubono, Kazuhiro Misumi, Kazuyuki Sakuma, Yuichi Onda","doi":"10.1515/pac-2023-0902","DOIUrl":null,"url":null,"abstract":"After the Fukushima Daiichi Nuclear Power Station (F1NPS) accident, <jats:sup>137</jats:sup>Cs activity concentrations have not yet decreased to pre-accident levels because of direct release from the site and fluvial discharges of <jats:sup>137</jats:sup>Cs deposited on land. It is necessary to consider dispersion processes in the coastal area to understand the impact of multiple river discharges and direct release. To achieve this goal, we carried out oceanic dispersion simulations that considered direct release and fluvial discharges and compared the results with the annual averages of observed data. We assumed that particulate <jats:sup>137</jats:sup>Cs discharged from rivers to the ocean quickly resuspended and re-leached after coagulation and precipitation, and that all of the <jats:sup>137</jats:sup>Cs was dispersed. The reproducibility of results was improved by considering fluvial discharges of particulate <jats:sup>137</jats:sup>Cs at all sites between 2013 and 2016, except near the F1NPS. In other words, particulate <jats:sup>137</jats:sup>Cs discharged from rivers was found to influence the results of ocean surface activity concentrations within a relatively short period of time. The impact of direct release was dominant for the observed <jats:sup>137</jats:sup>Cs activity concentrations adjacent to the F1NPS, which was used to estimate direct releases.","PeriodicalId":20911,"journal":{"name":"Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of fluvial discharge on 137Cs in the ocean following the Fukushima Daiichi Nuclear Power Station accident\",\"authors\":\"Daisuke Tsumune, Takaki Tsubono, Kazuhiro Misumi, Kazuyuki Sakuma, Yuichi Onda\",\"doi\":\"10.1515/pac-2023-0902\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"After the Fukushima Daiichi Nuclear Power Station (F1NPS) accident, <jats:sup>137</jats:sup>Cs activity concentrations have not yet decreased to pre-accident levels because of direct release from the site and fluvial discharges of <jats:sup>137</jats:sup>Cs deposited on land. It is necessary to consider dispersion processes in the coastal area to understand the impact of multiple river discharges and direct release. To achieve this goal, we carried out oceanic dispersion simulations that considered direct release and fluvial discharges and compared the results with the annual averages of observed data. We assumed that particulate <jats:sup>137</jats:sup>Cs discharged from rivers to the ocean quickly resuspended and re-leached after coagulation and precipitation, and that all of the <jats:sup>137</jats:sup>Cs was dispersed. The reproducibility of results was improved by considering fluvial discharges of particulate <jats:sup>137</jats:sup>Cs at all sites between 2013 and 2016, except near the F1NPS. In other words, particulate <jats:sup>137</jats:sup>Cs discharged from rivers was found to influence the results of ocean surface activity concentrations within a relatively short period of time. The impact of direct release was dominant for the observed <jats:sup>137</jats:sup>Cs activity concentrations adjacent to the F1NPS, which was used to estimate direct releases.\",\"PeriodicalId\":20911,\"journal\":{\"name\":\"Pure and Applied Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2024-03-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Pure and Applied Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1515/pac-2023-0902\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pure and Applied Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1515/pac-2023-0902","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Impact of fluvial discharge on 137Cs in the ocean following the Fukushima Daiichi Nuclear Power Station accident
After the Fukushima Daiichi Nuclear Power Station (F1NPS) accident, 137Cs activity concentrations have not yet decreased to pre-accident levels because of direct release from the site and fluvial discharges of 137Cs deposited on land. It is necessary to consider dispersion processes in the coastal area to understand the impact of multiple river discharges and direct release. To achieve this goal, we carried out oceanic dispersion simulations that considered direct release and fluvial discharges and compared the results with the annual averages of observed data. We assumed that particulate 137Cs discharged from rivers to the ocean quickly resuspended and re-leached after coagulation and precipitation, and that all of the 137Cs was dispersed. The reproducibility of results was improved by considering fluvial discharges of particulate 137Cs at all sites between 2013 and 2016, except near the F1NPS. In other words, particulate 137Cs discharged from rivers was found to influence the results of ocean surface activity concentrations within a relatively short period of time. The impact of direct release was dominant for the observed 137Cs activity concentrations adjacent to the F1NPS, which was used to estimate direct releases.
期刊介绍:
Pure and Applied Chemistry is the official monthly Journal of IUPAC, with responsibility for publishing works arising from those international scientific events and projects that are sponsored and undertaken by the Union. The policy is to publish highly topical and credible works at the forefront of all aspects of pure and applied chemistry, and the attendant goal is to promote widespread acceptance of the Journal as an authoritative and indispensable holding in academic and institutional libraries.