Migration and Distribution Fluxes of Plutonium Radioisotopes in Coastal Semiclosed Marine Areas

IF 1.3 4区地球科学 Q4 OCEANOGRAPHY Oceanology Pub Date : 2024-03-01 DOI:10.1134/s0001437023070135

A. A. Paraskiv, N. N. Tereshchenko, V. Yu. Proskurnin, O. D. Chuzhikova-Proskurnina, M. O. Vakhrushev

{"title":"Migration and Distribution Fluxes of Plutonium Radioisotopes in Coastal Semiclosed Marine Areas","authors":"A. A. Paraskiv, N. N. Tereshchenko, V. Yu. Proskurnin, O. D. Chuzhikova-Proskurnina, M. O. Vakhrushev","doi":"10.1134/s0001437023070135","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The article presents the results of a quantitative determination of the migration and distribution fluxes of plutonium radioisotopes 239 + 240Pu in coastal semiclosed marine ecosystems from a case study example of Sevastopol Bay (Black Sea) to assess the self-purification of water masses from 239 + 240Pu. The assessment was based on a study of the current (2018–2021) levels of the activity concentration of 239 + 240Pu in water, bottom sediments, perennial brown macroalgae, and benthic fish. It has been found that the main 239 + 240Pu removal flux (more than 93% of the total flux), which determines the self-purification of water masses with respect to 239 + 240Pu in coastal marine areas is the sediment flux of suspended particle matter, which causes redistribution of 239 + 240Pu into bottom sediments. 239 + 240Pu migration to neighboring water areas due to hydrological processes is insignificant, as well as the decrease in 239 + 240Pu in the ecosystem due to radioactive decay. In total, these processes accounted for less than 1% of the total flux. The interaction of 239 + 240Pu with macrobiota accounted for almost 6%, of which more than 5% was provided by macrophytes.","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oceanology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s0001437023070135","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}

引用次数: 0

Abstract

The article presents the results of a quantitative determination of the migration and distribution fluxes of plutonium radioisotopes ^{239 + 240}Pu in coastal semiclosed marine ecosystems from a case study example of Sevastopol Bay (Black Sea) to assess the self-purification of water masses from ^{239 + 240}Pu. The assessment was based on a study of the current (2018–2021) levels of the activity concentration of ^{239 + 240}Pu in water, bottom sediments, perennial brown macroalgae, and benthic fish. It has been found that the main ^{239 + 240}Pu removal flux (more than 93% of the total flux), which determines the self-purification of water masses with respect to ^{239 + 240}Pu in coastal marine areas is the sediment flux of suspended particle matter, which causes redistribution of ^{239 + 240}Pu into bottom sediments. ^{239 + 240}Pu migration to neighboring water areas due to hydrological processes is insignificant, as well as the decrease in ^{239 + 240}Pu in the ecosystem due to radioactive decay. In total, these processes accounted for less than 1% of the total flux. The interaction of ^{239 + 240}Pu with macrobiota accounted for almost 6%, of which more than 5% was provided by macrophytes.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

沿海半封闭海域钚放射性同位素的迁移和分布通量

摘要本文介绍了塞瓦斯托波尔湾（黑海）案例研究中对钚放射性同位素 239 + 240Pu 在沿海半封闭海洋生态系统中的迁移和分布通量进行定量测定的结果，以评估水体中 239 + 240Pu 的自净能力。该评估基于对当前（2018-2021 年）水、底层沉积物、多年生褐色大型藻类和底栖鱼类中 239 + 240Pu 活性浓度水平的研究。研究发现，决定沿海海域水体 239 + 240Pu 自净能力的主要 239 + 240Pu 清除通量（占总通量的 93% 以上）是悬浮颗粒物质的沉积通量，它导致 239 + 240Pu 重新分布到底层沉积物中。水文过程导致的 239 + 240Pu 向邻近水域的迁移以及放射性衰变导致的生态系统中 239 + 240Pu 的减少微不足道。这些过程总共占总通量的 1%以下。239 + 240Pu 与大型生物群的相互作用占近 6%，其中 5%以上由大型生物群提供。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Oceanology 地学-海洋学

CiteScore

2.00

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Oceanology, founded in 1961, is the leading journal in all areas of the marine sciences. It publishes original papers in all fields of theoretical and experimental research in physical, chemical, biological, geological, and technical oceanology. The journal also offers reviews and information about conferences, symposia, cruises, and other events of interest to the oceanographic community.