Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors
This study focuses on metal speciation research in Arctic lakes with technogenic pollution and other areas where natural processes prevail (background lakes and lakes with marine influence). Element speciation in 75 lakes in the Kola Peninsula was investigated in 2014 and 2018 taking into account th...
Published in: | Environmental Research Letters |
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Online Access: | https://doi.org/10.1088/1748-9326/abfb9f https://doaj.org/article/bc3d11de73454ac9ba417bfd49e3a073 |
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ftdoajarticles:oai:doaj.org/article:bc3d11de73454ac9ba417bfd49e3a073 2023-09-05T13:17:15+02:00 Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors M I Dinu 2021-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/abfb9f https://doaj.org/article/bc3d11de73454ac9ba417bfd49e3a073 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/abfb9f https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/abfb9f 1748-9326 https://doaj.org/article/bc3d11de73454ac9ba417bfd49e3a073 Environmental Research Letters, Vol 16, Iss 6, p 065005 (2021) Arctic lakes toxicity speciation metals humic acid Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2021 ftdoajarticles https://doi.org/10.1088/1748-9326/abfb9f 2023-08-13T00:37:14Z This study focuses on metal speciation research in Arctic lakes with technogenic pollution and other areas where natural processes prevail (background lakes and lakes with marine influence). Element speciation in 75 lakes in the Kola Peninsula was investigated in 2014 and 2018 taking into account the influence of different geochemical factors. The geochemical features of lake water in the investigated regions are documented and discussed. Membrane filtration was used with the following features: mechanical suspension and oxidized contaminants (>8 μ m, 1.2 μ m) for lakes near smelters and those subject to marine effects; light suspension colloids (0.45–0.1 μ m) for the natural waters of background lakes; low molecular weight complexes, inorganic ions, bacteria, and viruses (less than 0.1 μ m) for identification of labile and non-labile components. It has been proven that the bioavailable speciation (unbound with organic components) is determined by the physicochemical properties of organic matter, such as zeta potential, molecular weight, and colloid stability. In conventional background lakes, Fe and Al complexes with humic substances dominate, and the most associative elements of the lanthanide/actinide group repeat the tendency of Fe. In lakes with a clear marine influence, the complexation potential of organic substances is reduced due to Na ions, which deactivate humic functional groups. Multivariate statistical methods showed significant differences between the selected gradations of lake waters and the genetic similarities and differences in the behavior of element speciation. Article in Journal/Newspaper Arctic kola peninsula Directory of Open Access Journals: DOAJ Articles Arctic Kola Peninsula Environmental Research Letters 16 6 065005 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic lakes toxicity speciation metals humic acid Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
Arctic lakes toxicity speciation metals humic acid Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 M I Dinu Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors |
topic_facet |
Arctic lakes toxicity speciation metals humic acid Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
This study focuses on metal speciation research in Arctic lakes with technogenic pollution and other areas where natural processes prevail (background lakes and lakes with marine influence). Element speciation in 75 lakes in the Kola Peninsula was investigated in 2014 and 2018 taking into account the influence of different geochemical factors. The geochemical features of lake water in the investigated regions are documented and discussed. Membrane filtration was used with the following features: mechanical suspension and oxidized contaminants (>8 μ m, 1.2 μ m) for lakes near smelters and those subject to marine effects; light suspension colloids (0.45–0.1 μ m) for the natural waters of background lakes; low molecular weight complexes, inorganic ions, bacteria, and viruses (less than 0.1 μ m) for identification of labile and non-labile components. It has been proven that the bioavailable speciation (unbound with organic components) is determined by the physicochemical properties of organic matter, such as zeta potential, molecular weight, and colloid stability. In conventional background lakes, Fe and Al complexes with humic substances dominate, and the most associative elements of the lanthanide/actinide group repeat the tendency of Fe. In lakes with a clear marine influence, the complexation potential of organic substances is reduced due to Na ions, which deactivate humic functional groups. Multivariate statistical methods showed significant differences between the selected gradations of lake waters and the genetic similarities and differences in the behavior of element speciation. |
format |
Article in Journal/Newspaper |
author |
M I Dinu |
author_facet |
M I Dinu |
author_sort |
M I Dinu |
title |
Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors |
title_short |
Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors |
title_full |
Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors |
title_fullStr |
Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors |
title_full_unstemmed |
Element specification in small lakes of the Kola Peninsula: geochemical and technogenic factors |
title_sort |
element specification in small lakes of the kola peninsula: geochemical and technogenic factors |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1088/1748-9326/abfb9f https://doaj.org/article/bc3d11de73454ac9ba417bfd49e3a073 |
geographic |
Arctic Kola Peninsula |
geographic_facet |
Arctic Kola Peninsula |
genre |
Arctic kola peninsula |
genre_facet |
Arctic kola peninsula |
op_source |
Environmental Research Letters, Vol 16, Iss 6, p 065005 (2021) |
op_relation |
https://doi.org/10.1088/1748-9326/abfb9f https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/abfb9f 1748-9326 https://doaj.org/article/bc3d11de73454ac9ba417bfd49e3a073 |
op_doi |
https://doi.org/10.1088/1748-9326/abfb9f |
container_title |
Environmental Research Letters |
container_volume |
16 |
container_issue |
6 |
container_start_page |
065005 |
_version_ |
1776198495756091392 |