Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP)
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.22564/rbgf.v37i4.2025 http://hdl.handle.net/11449/200074 |
Resumo: | In São Paulo State, there are hundreds of contaminated areas due to leakage of hydrocarbons in gas stations, industry or transportation. Chemical compounds transportation is a high-risk activity in function of the unpredictability of accidents. The integration between geophysical data and soil/groundwater chemical analyzes provides a comprehensive and appropriate view to the management and monitoring of contaminated areas. This paper brings a set of geochemical data and geophysical diagnosis acquired in a diesel-contaminated area due to a railroad accident in 2002, during the transport of fuels in Cerquilho, São Paulo State. Furthermore, the site was still affected by the contamination when the geophysical acquisition was performed. DC Resistivity and Induced Polarization were performed, using electrical tomography technique. High chargeability values (2.97 mV/V) were associated with the neoformation of sulfides and hydroxides minerals in the unsaturated zone due to hydrocarbon degradation. Furthermore, the resistivity data indicated the presence of residual phase in the unsaturated zone by a heterogeneous pattern of anomalies. In addition, low resistivity values (<12 Ω.m) in the saturated zone indicated a dissolved phase of the contaminant. The geophysical diagnosis of residual phases in hydrocarbon contamination are used as a subsidy to the proper planning of remediation techniques in aquifer systems. |
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Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP)DC resistivityHydrocarbonInduced polarizationLeakageRemediationResidual phaseIn São Paulo State, there are hundreds of contaminated areas due to leakage of hydrocarbons in gas stations, industry or transportation. Chemical compounds transportation is a high-risk activity in function of the unpredictability of accidents. The integration between geophysical data and soil/groundwater chemical analyzes provides a comprehensive and appropriate view to the management and monitoring of contaminated areas. This paper brings a set of geochemical data and geophysical diagnosis acquired in a diesel-contaminated area due to a railroad accident in 2002, during the transport of fuels in Cerquilho, São Paulo State. Furthermore, the site was still affected by the contamination when the geophysical acquisition was performed. DC Resistivity and Induced Polarization were performed, using electrical tomography technique. High chargeability values (2.97 mV/V) were associated with the neoformation of sulfides and hydroxides minerals in the unsaturated zone due to hydrocarbon degradation. Furthermore, the resistivity data indicated the presence of residual phase in the unsaturated zone by a heterogeneous pattern of anomalies. In addition, low resistivity values (<12 Ω.m) in the saturated zone indicated a dissolved phase of the contaminant. The geophysical diagnosis of residual phases in hydrocarbon contamination are used as a subsidy to the proper planning of remediation techniques in aquifer systems.Applied Geology Department – Geoscience and Exact Science Institute Univ. Estadual Paulista-UNESP, Rio Claro Campus, 24-A Avenue, nº 1515Bauru Engineering College – Univ. Estadual Paulista-UNESP, Bauru Campus, Av. Eng. Luiz Edmundo C. Coube 14-01-Vargem Limpa-SPGeoscience and Exact Science Institute Univ. Estadual Paulista-UNESP, Rio Claro Campus, 24-A Avenue, nº 1515, PO box 178Applied Geology Department – Geoscience and Exact Science Institute Univ. Estadual Paulista-UNESP, Rio Claro Campus, 24-A Avenue, nº 1515Bauru Engineering College – Univ. Estadual Paulista-UNESP, Bauru Campus, Av. Eng. Luiz Edmundo C. Coube 14-01-Vargem Limpa-SPGeoscience and Exact Science Institute Univ. Estadual Paulista-UNESP, Rio Claro Campus, 24-A Avenue, nº 1515, PO box 178Universidade Estadual Paulista (Unesp)Moreira, César Augusto [UNESP]Junqueira, Paula Gomes [UNESP]Casagrande, Matheus Felipe Stanfoca [UNESP]Targa, Débora Andrade [UNESP]2020-12-12T01:57:03Z2020-12-12T01:57:03Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.22564/rbgf.v37i4.2025Revista Brasileira de Geofisica, v. 37, n. 4, 2019.1809-45110102-261Xhttp://hdl.handle.net/11449/20007410.22564/rbgf.v37i4.20252-s2.0-8507955459990868573123910800000-0002-6949-6679Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Geofisicainfo:eu-repo/semantics/openAccess2021-10-23T11:55:38Zoai:repositorio.unesp.br:11449/200074Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T11:55:38Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
title |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
spellingShingle |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) Moreira, César Augusto [UNESP] DC resistivity Hydrocarbon Induced polarization Leakage Remediation Residual phase |
title_short |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
title_full |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
title_fullStr |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
title_full_unstemmed |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
title_sort |
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP) |
author |
Moreira, César Augusto [UNESP] |
author_facet |
Moreira, César Augusto [UNESP] Junqueira, Paula Gomes [UNESP] Casagrande, Matheus Felipe Stanfoca [UNESP] Targa, Débora Andrade [UNESP] |
author_role |
author |
author2 |
Junqueira, Paula Gomes [UNESP] Casagrande, Matheus Felipe Stanfoca [UNESP] Targa, Débora Andrade [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Moreira, César Augusto [UNESP] Junqueira, Paula Gomes [UNESP] Casagrande, Matheus Felipe Stanfoca [UNESP] Targa, Débora Andrade [UNESP] |
dc.subject.por.fl_str_mv |
DC resistivity Hydrocarbon Induced polarization Leakage Remediation Residual phase |
topic |
DC resistivity Hydrocarbon Induced polarization Leakage Remediation Residual phase |
description |
In São Paulo State, there are hundreds of contaminated areas due to leakage of hydrocarbons in gas stations, industry or transportation. Chemical compounds transportation is a high-risk activity in function of the unpredictability of accidents. The integration between geophysical data and soil/groundwater chemical analyzes provides a comprehensive and appropriate view to the management and monitoring of contaminated areas. This paper brings a set of geochemical data and geophysical diagnosis acquired in a diesel-contaminated area due to a railroad accident in 2002, during the transport of fuels in Cerquilho, São Paulo State. Furthermore, the site was still affected by the contamination when the geophysical acquisition was performed. DC Resistivity and Induced Polarization were performed, using electrical tomography technique. High chargeability values (2.97 mV/V) were associated with the neoformation of sulfides and hydroxides minerals in the unsaturated zone due to hydrocarbon degradation. Furthermore, the resistivity data indicated the presence of residual phase in the unsaturated zone by a heterogeneous pattern of anomalies. In addition, low resistivity values (<12 Ω.m) in the saturated zone indicated a dissolved phase of the contaminant. The geophysical diagnosis of residual phases in hydrocarbon contamination are used as a subsidy to the proper planning of remediation techniques in aquifer systems. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T01:57:03Z 2020-12-12T01:57:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.22564/rbgf.v37i4.2025 Revista Brasileira de Geofisica, v. 37, n. 4, 2019. 1809-4511 0102-261X http://hdl.handle.net/11449/200074 10.22564/rbgf.v37i4.2025 2-s2.0-85079554599 9086857312391080 0000-0002-6949-6679 |
url |
http://dx.doi.org/10.22564/rbgf.v37i4.2025 http://hdl.handle.net/11449/200074 |
identifier_str_mv |
Revista Brasileira de Geofisica, v. 37, n. 4, 2019. 1809-4511 0102-261X 10.22564/rbgf.v37i4.2025 2-s2.0-85079554599 9086857312391080 0000-0002-6949-6679 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Geofisica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803047133963616256 |