Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf

A growing literature proposes that combusted-derived black carbon (BC) dominates the sorption and, by inference, the environmental distribution and bioavailability of many hydrophobic pollutant classes. There is a paucity of studies simultaneously evaluating the distribution of both BC geosorbents a...

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Detalhes bibliográficos
Autores: Sánchez-García, Laura, Cato, Ingemar, Gustafsson, Örjan
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2010
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/415665
Acesso em linha:http://hdl.handle.net/10261/415665
https://api.elsevier.com/content/abstract/scopus_id/77950517339
Access Level:Acceso aberto
Palavra-chave:Sorption
Black carbon
Marine sediments
Polycyclic aromatic hydrocarbons
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spelling Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelfSánchez-García, LauraCato, IngemarGustafsson, ÖrjanSorptionBlack carbonMarine sedimentsPolycyclic aromatic hydrocarbonsA growing literature proposes that combusted-derived black carbon (BC) dominates the sorption and, by inference, the environmental distribution and bioavailability of many hydrophobic pollutant classes. There is a paucity of studies simultaneously evaluating the distribution of both BC geosorbents and pollutant sorbates in the actual field. Here, 120 surface sediments collected by the Geological Survey of Sweden along the 2000 km continental shelf along the Swedish coast facilitated evaluation of the relative influences of BC and non-BC organic carbon (OC) on the spatial distribution of polycyclic aromatic hydrocarbons (PAHs). The sum of 15 out of the 16 EPA PAHs ranged from 0.12 to 9.6 μg/g dry weight (dw), with the highest levels being found in the southern half of the Swedish Shelf (SS) area and in the vicinity of larger cities (Stockholm, Göteborg, Malmö and Umeå). Source-diagnostic PAH ratios such as ANT/(PHE + ANT), FLT/(FLT + PYR), BaA/(BaA + BPE), IPY/(IPY + BPE), CombPAH/ΣPAH and LMW/HMW suggested that pyrogenic sources are dominating the load of PAHs in Swedish Baltic and North Sea sediments. The sediment TOC was 4.8-168 mg/gdw (median 43 mg/gdw), while a BC concentration of 0.6-18 mg/gdw (median 1.8 mg/gdw) yielded BC:TOC ratios spanning a wide range of 1.7-47% (median 4.6%). Empirical distribution function tests indicated that the use of linear regression statistics was inappropriate. Instead, evaluation with the non-parametric Spearman function yielded higher correlation coefficient (r<inf>S</inf>) for total PAHs versus BC (0.54, p < 0.01) than versus either TOC (0.28, p < 0.01) or OC (TOC-BC; 0.26, p < 0.01). The results from this field study, encompassing an order of magnitude more observations than any previous sediment study, constitute a broad field manifestation of the importance of BC in affecting the distribution of planar aromatic pollutants in aquatic environments. © 2009 Elsevier B.V. All rights reserved.We thank Martin Kruså for technical assistance. This work was primarily supported by a grant from the Geological Survey of Sweden (SGU, contract no. 60-1341/2006). Data on PAHs and TOC were kindly put to our disposal by SGU. The authors Ö.G. and L.S-G. also acknowledge an Academy Research Fellow grant from the Swedish Royal Academy of Sciences and an EU Marie Curie grant (contract no. PIEF-GA-2008-220424), respectively.Peer reviewedElsevierGeological Survey of SwedenRoyal Swedish Academy of SciencesEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/415665https://api.elsevier.com/content/abstract/scopus_id/77950517339reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.marchem.2009.12.005Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4156652026-05-22T06:33:51Z
dc.title.none.fl_str_mv Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
title Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
spellingShingle Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
Sánchez-García, Laura
Sorption
Black carbon
Marine sediments
Polycyclic aromatic hydrocarbons
title_short Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
title_full Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
title_fullStr Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
title_full_unstemmed Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
title_sort Evaluation of the influence of black carbon on the distribution of PAHs in sediments from along the entire Swedish continental shelf
dc.creator.none.fl_str_mv Sánchez-García, Laura
Cato, Ingemar
Gustafsson, Örjan
author Sánchez-García, Laura
author_facet Sánchez-García, Laura
Cato, Ingemar
Gustafsson, Örjan
author_role author
author2 Cato, Ingemar
Gustafsson, Örjan
author2_role author
author
dc.contributor.none.fl_str_mv Geological Survey of Sweden
Royal Swedish Academy of Sciences
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Sorption
Black carbon
Marine sediments
Polycyclic aromatic hydrocarbons
topic Sorption
Black carbon
Marine sediments
Polycyclic aromatic hydrocarbons
description A growing literature proposes that combusted-derived black carbon (BC) dominates the sorption and, by inference, the environmental distribution and bioavailability of many hydrophobic pollutant classes. There is a paucity of studies simultaneously evaluating the distribution of both BC geosorbents and pollutant sorbates in the actual field. Here, 120 surface sediments collected by the Geological Survey of Sweden along the 2000 km continental shelf along the Swedish coast facilitated evaluation of the relative influences of BC and non-BC organic carbon (OC) on the spatial distribution of polycyclic aromatic hydrocarbons (PAHs). The sum of 15 out of the 16 EPA PAHs ranged from 0.12 to 9.6 μg/g dry weight (dw), with the highest levels being found in the southern half of the Swedish Shelf (SS) area and in the vicinity of larger cities (Stockholm, Göteborg, Malmö and Umeå). Source-diagnostic PAH ratios such as ANT/(PHE + ANT), FLT/(FLT + PYR), BaA/(BaA + BPE), IPY/(IPY + BPE), CombPAH/ΣPAH and LMW/HMW suggested that pyrogenic sources are dominating the load of PAHs in Swedish Baltic and North Sea sediments. The sediment TOC was 4.8-168 mg/gdw (median 43 mg/gdw), while a BC concentration of 0.6-18 mg/gdw (median 1.8 mg/gdw) yielded BC:TOC ratios spanning a wide range of 1.7-47% (median 4.6%). Empirical distribution function tests indicated that the use of linear regression statistics was inappropriate. Instead, evaluation with the non-parametric Spearman function yielded higher correlation coefficient (r<inf>S</inf>) for total PAHs versus BC (0.54, p < 0.01) than versus either TOC (0.28, p < 0.01) or OC (TOC-BC; 0.26, p < 0.01). The results from this field study, encompassing an order of magnitude more observations than any previous sediment study, constitute a broad field manifestation of the importance of BC in affecting the distribution of planar aromatic pollutants in aquatic environments. © 2009 Elsevier B.V. All rights reserved.
publishDate 2010
dc.date.none.fl_str_mv 2010
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/415665
https://api.elsevier.com/content/abstract/scopus_id/77950517339
url http://hdl.handle.net/10261/415665
https://api.elsevier.com/content/abstract/scopus_id/77950517339
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.marchem.2009.12.005
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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