Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers
The aquatic elementary landscapes of the Don and Northern Dvina Rivers mouth zones as arenas of mass transfer of heavy metals (HM) are studied. The results of long-term comprehensive studies of the authors, which included sampling of water and the upper layer of bottom sediments in order to determin...
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EDP Sciences
2021
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Online Access: | https://doi.org/10.1051/e3sconf/202126502016 https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/41/e3sconf_apeem2021_02016.pdf https://doaj.org/article/5a3fcf087657426493a493a319fb5b84 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:5a3fcf087657426493a493a319fb5b84 2023-05-15T16:02:53+02:00 Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers Mikhailenko Anna Dotsenko Irina Ovsepyan Asya Zimovets Alina 2021-01-01 https://doi.org/10.1051/e3sconf/202126502016 https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/41/e3sconf_apeem2021_02016.pdf https://doaj.org/article/5a3fcf087657426493a493a319fb5b84 en fr eng fre EDP Sciences 2267-1242 doi:10.1051/e3sconf/202126502016 https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/41/e3sconf_apeem2021_02016.pdf https://doaj.org/article/5a3fcf087657426493a493a319fb5b84 undefined E3S Web of Conferences, Vol 265, p 02016 (2021) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.1051/e3sconf/202126502016 2023-01-22T19:11:20Z The aquatic elementary landscapes of the Don and Northern Dvina Rivers mouth zones as arenas of mass transfer of heavy metals (HM) are studied. The results of long-term comprehensive studies of the authors, which included sampling of water and the upper layer of bottom sediments in order to determine the content of mercury, copper, methane, hydrogen sulfide, as well as pH and Eh values, are presented. According to the type of prevailing geochemical conditions and the level of anthropogenic impact, natural, man-made and natural-anthropogenic aquatic elementary landscapes are distinguished. The bottom water layers in both rivers were characterized by positive Eh values, but it should be noted that they were generally relatively low for surface watercourses. According to the values of the redox potential and the hydrogen index, the methane content and the total hydrogen sulfide, the presence of the following conditions is proved – oxygen, gley, hydrogen sulfide, oxygen-gley and gley-hydrogen sulfide. At the water - sediment interface, in most cases, there was a decrease in pH values by the first tenths of the values, while Eh usually decreased quite sharply, often to negative values. In terms of methane content, the bottom sediments of the aquatic elementary landscapes of the Don and Northern Dvina rivers were similar, while the concentration of total hydrogen sulfide was higher in the Don. It is shown that in the mouth zone of the Don and Northern Dvina rivers, in areas subject to constant organic pollution and eutrophication, there is an increase in the total content of mercury and copper in the bottom sediments. Higher concentrations of gross mercury will generally be found in natural and anthropogenic landscapes dominated by hydrogen sulfide and gley-hydrogen sulfide environments. The important role of microparticles of the polydisperse medium of bottom sediments in the deposition of copper and mercury is revealed. Article in Journal/Newspaper dvina Unknown E3S Web of Conferences 265 02016 |
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English French |
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envir geo |
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envir geo Mikhailenko Anna Dotsenko Irina Ovsepyan Asya Zimovets Alina Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
topic_facet |
envir geo |
description |
The aquatic elementary landscapes of the Don and Northern Dvina Rivers mouth zones as arenas of mass transfer of heavy metals (HM) are studied. The results of long-term comprehensive studies of the authors, which included sampling of water and the upper layer of bottom sediments in order to determine the content of mercury, copper, methane, hydrogen sulfide, as well as pH and Eh values, are presented. According to the type of prevailing geochemical conditions and the level of anthropogenic impact, natural, man-made and natural-anthropogenic aquatic elementary landscapes are distinguished. The bottom water layers in both rivers were characterized by positive Eh values, but it should be noted that they were generally relatively low for surface watercourses. According to the values of the redox potential and the hydrogen index, the methane content and the total hydrogen sulfide, the presence of the following conditions is proved – oxygen, gley, hydrogen sulfide, oxygen-gley and gley-hydrogen sulfide. At the water - sediment interface, in most cases, there was a decrease in pH values by the first tenths of the values, while Eh usually decreased quite sharply, often to negative values. In terms of methane content, the bottom sediments of the aquatic elementary landscapes of the Don and Northern Dvina rivers were similar, while the concentration of total hydrogen sulfide was higher in the Don. It is shown that in the mouth zone of the Don and Northern Dvina rivers, in areas subject to constant organic pollution and eutrophication, there is an increase in the total content of mercury and copper in the bottom sediments. Higher concentrations of gross mercury will generally be found in natural and anthropogenic landscapes dominated by hydrogen sulfide and gley-hydrogen sulfide environments. The important role of microparticles of the polydisperse medium of bottom sediments in the deposition of copper and mercury is revealed. |
format |
Article in Journal/Newspaper |
author |
Mikhailenko Anna Dotsenko Irina Ovsepyan Asya Zimovets Alina |
author_facet |
Mikhailenko Anna Dotsenko Irina Ovsepyan Asya Zimovets Alina |
author_sort |
Mikhailenko Anna |
title |
Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
title_short |
Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
title_full |
Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
title_fullStr |
Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
title_full_unstemmed |
Behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
title_sort |
behaviour and distribution of heavy metals at the boundary of “water-bottom sediments” in mouth zones of rivers |
publisher |
EDP Sciences |
publishDate |
2021 |
url |
https://doi.org/10.1051/e3sconf/202126502016 https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/41/e3sconf_apeem2021_02016.pdf https://doaj.org/article/5a3fcf087657426493a493a319fb5b84 |
genre |
dvina |
genre_facet |
dvina |
op_source |
E3S Web of Conferences, Vol 265, p 02016 (2021) |
op_relation |
2267-1242 doi:10.1051/e3sconf/202126502016 https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/41/e3sconf_apeem2021_02016.pdf https://doaj.org/article/5a3fcf087657426493a493a319fb5b84 |
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undefined |
op_doi |
https://doi.org/10.1051/e3sconf/202126502016 |
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E3S Web of Conferences |
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265 |
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02016 |
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