Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone
One of the main reservoirs depositing various classes of pollutants in high latitude regions are wetland ecosystems. Climate warming trends result in the degradation of permafrost in cryolitic peatlands, which exposes the hydrological network to risks of heavy metal (HM) ingress and its subsequent m...
Published in: | International Journal of Environmental Research and Public Health |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2023
|
Subjects: | |
Online Access: | https://doi.org/10.3390/ijerph20053847 https://doaj.org/article/8af826ebc7074f2eb80da9dd7c12559e |
id |
ftdoajarticles:oai:doaj.org/article:8af826ebc7074f2eb80da9dd7c12559e |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:8af826ebc7074f2eb80da9dd7c12559e 2023-05-15T15:16:46+02:00 Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone Roman Vasilevich Mariya Vasilevich Evgeny Lodygin Evgeny Abakumov 2023-02-01T00:00:00Z https://doi.org/10.3390/ijerph20053847 https://doaj.org/article/8af826ebc7074f2eb80da9dd7c12559e EN eng MDPI AG https://www.mdpi.com/1660-4601/20/5/3847 https://doaj.org/toc/1661-7827 https://doaj.org/toc/1660-4601 doi:10.3390/ijerph20053847 1660-4601 1661-7827 https://doaj.org/article/8af826ebc7074f2eb80da9dd7c12559e International Journal of Environmental Research and Public Health, Vol 20, Iss 3847, p 3847 (2023) subarctic region peatlands histosols biogeochemical barriers ecotoxicants technogenesis Medicine R article 2023 ftdoajarticles https://doi.org/10.3390/ijerph20053847 2023-03-12T01:29:36Z One of the main reservoirs depositing various classes of pollutants in high latitude regions are wetland ecosystems. Climate warming trends result in the degradation of permafrost in cryolitic peatlands, which exposes the hydrological network to risks of heavy metal (HM) ingress and its subsequent migration to the Arctic Ocean basin. The objectives included: (1) carrying out a quantitative analysis of the content of HMs and As across the profile of Histosols in background and technogenic landscapes of the Subarctic region, (2) evaluating the contribution of the anthropogenic impact to the accumulation of trace elements in the seasonally thawed layer (STL) of peat deposits, (3) discovering the effect of biogeochemical barriers on the vertical distribution of HMs and As. The analyses of elements were conducted by atom emission spectroscopy with inductively coupled plasma, atomic absorption spectroscopy and scanning electron microscopy with an energy-dispersive X-ray detecting. The study focused on the characteristics of the layer-by-layer accumulation of HMs and As in hummocky peatlands of the extreme northern taiga. It revealed the upper level of microelement accumulation to be associated with the STL as a result of aerogenic pollution. Specifically composed spheroidal microparticles found in the upper layer of peat may serve as indicators of the area polluted by power plants. The accumulation of water-soluble forms of most of the pollutants studied on the upper boundary of the permafrost layer (PL) is explained by the high mobility of elements in an acidic environment. In the STL, humic acids act as a significant sorption geochemical barrier for elements with a high stability constant value. In the PL, the accumulation of pollutants is associated with their sorption on aluminum-iron complexes and interaction with the sulfide barrier. A significant contribution of biogenic element accumulation was shown by statistical analysis. Article in Journal/Newspaper Arctic Arctic Ocean permafrost Subarctic taiga Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean International Journal of Environmental Research and Public Health 20 5 3847 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
subarctic region peatlands histosols biogeochemical barriers ecotoxicants technogenesis Medicine R |
spellingShingle |
subarctic region peatlands histosols biogeochemical barriers ecotoxicants technogenesis Medicine R Roman Vasilevich Mariya Vasilevich Evgeny Lodygin Evgeny Abakumov Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone |
topic_facet |
subarctic region peatlands histosols biogeochemical barriers ecotoxicants technogenesis Medicine R |
description |
One of the main reservoirs depositing various classes of pollutants in high latitude regions are wetland ecosystems. Climate warming trends result in the degradation of permafrost in cryolitic peatlands, which exposes the hydrological network to risks of heavy metal (HM) ingress and its subsequent migration to the Arctic Ocean basin. The objectives included: (1) carrying out a quantitative analysis of the content of HMs and As across the profile of Histosols in background and technogenic landscapes of the Subarctic region, (2) evaluating the contribution of the anthropogenic impact to the accumulation of trace elements in the seasonally thawed layer (STL) of peat deposits, (3) discovering the effect of biogeochemical barriers on the vertical distribution of HMs and As. The analyses of elements were conducted by atom emission spectroscopy with inductively coupled plasma, atomic absorption spectroscopy and scanning electron microscopy with an energy-dispersive X-ray detecting. The study focused on the characteristics of the layer-by-layer accumulation of HMs and As in hummocky peatlands of the extreme northern taiga. It revealed the upper level of microelement accumulation to be associated with the STL as a result of aerogenic pollution. Specifically composed spheroidal microparticles found in the upper layer of peat may serve as indicators of the area polluted by power plants. The accumulation of water-soluble forms of most of the pollutants studied on the upper boundary of the permafrost layer (PL) is explained by the high mobility of elements in an acidic environment. In the STL, humic acids act as a significant sorption geochemical barrier for elements with a high stability constant value. In the PL, the accumulation of pollutants is associated with their sorption on aluminum-iron complexes and interaction with the sulfide barrier. A significant contribution of biogenic element accumulation was shown by statistical analysis. |
format |
Article in Journal/Newspaper |
author |
Roman Vasilevich Mariya Vasilevich Evgeny Lodygin Evgeny Abakumov |
author_facet |
Roman Vasilevich Mariya Vasilevich Evgeny Lodygin Evgeny Abakumov |
author_sort |
Roman Vasilevich |
title |
Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone |
title_short |
Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone |
title_full |
Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone |
title_fullStr |
Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone |
title_full_unstemmed |
Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone |
title_sort |
geochemical characteristics of the vertical distribution of heavy metals in the hummocky peatlands of the cryolithozone |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/ijerph20053847 https://doaj.org/article/8af826ebc7074f2eb80da9dd7c12559e |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean permafrost Subarctic taiga |
genre_facet |
Arctic Arctic Ocean permafrost Subarctic taiga |
op_source |
International Journal of Environmental Research and Public Health, Vol 20, Iss 3847, p 3847 (2023) |
op_relation |
https://www.mdpi.com/1660-4601/20/5/3847 https://doaj.org/toc/1661-7827 https://doaj.org/toc/1660-4601 doi:10.3390/ijerph20053847 1660-4601 1661-7827 https://doaj.org/article/8af826ebc7074f2eb80da9dd7c12559e |
op_doi |
https://doi.org/10.3390/ijerph20053847 |
container_title |
International Journal of Environmental Research and Public Health |
container_volume |
20 |
container_issue |
5 |
container_start_page |
3847 |
_version_ |
1766347064834260992 |