226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden

A pit lake arises as a consequence of anthropogenic activities in opencast mining areas. These water bodies may be enriched in hazardous stable contaminants and/or in naturally occurring radionuclides depending on the local geological conditions. Mining legacy in Sweden produced hundreds of these pi...

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Authors: Thomas, R., Mantero, J., Pérez Moreno, Silvia María, Ruiz Cánovas, Carlos, Vioque, I., Isaksson, Mats, Forssell-Aronsson, Eva, Holm, E., García Tenorio, R.
Format: article
Publication Date:2020
Country:España
Institution:Universidad de Huelva (UHU)
Repository:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Language:English
OAI Identifier:oai:ariasmontano.uhu.es:10272/23642
Online Access:https://hdl.handle.net/10272/23642
Access Level:Open access
Keyword:Pit lake
NORM
Radium
Polonium
Lead
Water column profile
2506 Geología
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spelling 226Ra, 210Po and lead isotopes in a pit lake water profile in SwedenThomas, R.Mantero, J.Pérez Moreno, Silvia MaríaRuiz Cánovas, CarlosVioque, I.Isaksson, MatsForssell-Aronsson, EvaHolm, E.García Tenorio, R.Pit lakeNORMRadiumPoloniumLeadWater column profile2506 GeologíaA pit lake arises as a consequence of anthropogenic activities in opencast mining areas. These water bodies may be enriched in hazardous stable contaminants and/or in naturally occurring radionuclides depending on the local geological conditions. Mining legacy in Sweden produced hundreds of these pit lakes and most of them are used for recreational purposes in the southern part of the country. In this paper, one pit lake was selected for having enhanced levels of natural radionuclides. Physico-chemical parameters (temperature, pH, oxidation-reduction potential, dissolved oxygen and depth), elemental composition (via Inductive Coupled Plasma Mass Spectrometry) and radiometric characterization (via alpha spectrometry of 226Ra, 210Po and 210Pb) were carried along the depth of a 60 m depth pit lake, with the main aim to describe how natural radionuclides and elements behaves with depth in a non-uraniferous pit lake. Based on observed changes in physico-chemical parameters, a thermocline and a chemocline region were identified at around 10 and 30 m depth respectively. Concerning radionuclides, 226Ra ranged from 75 ±3 up to 360 ±12 mBq/kg while 210Po ranged from 11 ±1 up to 71 ±3 mBq/kg. 210Pb distribution with depth was also determined via secular equilibrium with 210Po after 2 years and also stable Pb was measured. Disequilibrium 226Ra-210Pb was found and the residence time of 210Pb in the water column was assessed. Additionally, different vertical distributions between 210Pb and Pb were found which points out different sources for different lead isotopes in the water bodyElsevier20202020-11-0120202020-11-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10272/23642reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/236422026-06-02T14:58:11Z
dc.title.none.fl_str_mv 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
title 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
spellingShingle 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
Thomas, R.
Pit lake
NORM
Radium
Polonium
Lead
Water column profile
2506 Geología
title_short 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
title_full 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
title_fullStr 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
title_full_unstemmed 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
title_sort 226Ra, 210Po and lead isotopes in a pit lake water profile in Sweden
dc.creator.none.fl_str_mv Thomas, R.
Mantero, J.
Pérez Moreno, Silvia María
Ruiz Cánovas, Carlos
Vioque, I.
Isaksson, Mats
Forssell-Aronsson, Eva
Holm, E.
García Tenorio, R.
author Thomas, R.
author_facet Thomas, R.
Mantero, J.
Pérez Moreno, Silvia María
Ruiz Cánovas, Carlos
Vioque, I.
Isaksson, Mats
Forssell-Aronsson, Eva
Holm, E.
García Tenorio, R.
author_role author
author2 Mantero, J.
Pérez Moreno, Silvia María
Ruiz Cánovas, Carlos
Vioque, I.
Isaksson, Mats
Forssell-Aronsson, Eva
Holm, E.
García Tenorio, R.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Pit lake
NORM
Radium
Polonium
Lead
Water column profile
2506 Geología
topic Pit lake
NORM
Radium
Polonium
Lead
Water column profile
2506 Geología
description A pit lake arises as a consequence of anthropogenic activities in opencast mining areas. These water bodies may be enriched in hazardous stable contaminants and/or in naturally occurring radionuclides depending on the local geological conditions. Mining legacy in Sweden produced hundreds of these pit lakes and most of them are used for recreational purposes in the southern part of the country. In this paper, one pit lake was selected for having enhanced levels of natural radionuclides. Physico-chemical parameters (temperature, pH, oxidation-reduction potential, dissolved oxygen and depth), elemental composition (via Inductive Coupled Plasma Mass Spectrometry) and radiometric characterization (via alpha spectrometry of 226Ra, 210Po and 210Pb) were carried along the depth of a 60 m depth pit lake, with the main aim to describe how natural radionuclides and elements behaves with depth in a non-uraniferous pit lake. Based on observed changes in physico-chemical parameters, a thermocline and a chemocline region were identified at around 10 and 30 m depth respectively. Concerning radionuclides, 226Ra ranged from 75 ±3 up to 360 ±12 mBq/kg while 210Po ranged from 11 ±1 up to 71 ±3 mBq/kg. 210Pb distribution with depth was also determined via secular equilibrium with 210Po after 2 years and also stable Pb was measured. Disequilibrium 226Ra-210Pb was found and the residence time of 210Pb in the water column was assessed. Additionally, different vertical distributions between 210Pb and Pb were found which points out different sources for different lead isotopes in the water body
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-11-01
2020
2020-11-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10272/23642
url https://hdl.handle.net/10272/23642
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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