Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean
Forest fires can be a source of contamination because, among others, of the use of chemicals to their extinction (flame retardants, FRs), or by the production of Polycyclic Aromatic Hydrocarbons (PAHs) derived from high temperature alteration of organic matter. Up to our knowledge, this study is the first to assess the direct (PAHs 16 on the USA EPA's priority list), and indirect [tri- to hepta- brominated diphenyl ethers (PBDEs), organophosphorus flame retardants (PFRs) and perfluoroalkyl substances (PFASs)] contamination related to forest fires. The abundance and distribution of these contaminants were monitored on two Mediterranean hillslopes, one burned and one unburned, near Azuébar (SE Spain). Samples were taken in the foot, middle, and top of the slope, at two depths, and in two environments (under canopy and bare soil). Sediments were collected from sediment fences after erosive rainfall events. Most of the screened compounds were found in both, burned and control hillslopes, though significant differences were found between both. In burned soil, low concentrations of PBDEs (maximum ΣPBDEs: 7.3 ng g− 1), PFRs (664.4 ng g− 1) and PFASs (56.4 ng g− 1) were detected in relation to PAHs (Σ16 PAHs = 1255.3 ng g− 1). No significant influence of the hillslope position was observed for any of the contaminants but differences based on depth and vegetation presence tended to be significant, particularly for the PAHs. After the first erosive event, concentrations of PBDEs and PAHs were higher in sediment than in soil (ΣPBDEs: 17.8 ng g− 1 and Σ16 PAHs = 3154.2 ng g− 1) pointing out the importance of connectivity processes, especially shortly after fire.
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Language: | English |
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Elsevier
2017-12-15
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Subjects: | PBDEs, PAHs, PFRs, PFASs, Forest fires, Coupled hillslopes, Connectivity, |
Online Access: | http://hdl.handle.net/10261/183384 http://dx.doi.org/10.13039/501100010805 http://dx.doi.org/10.13039/501100003359 |
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dig-cide-es-10261-1833842019-10-01T11:06:31Z Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean Campo, Julián Lorenzo, María Cammeraat, E. Picó, Yolanda Andreu Pérez, V. Generalitat Valenciana Fundación Tatiana Pérez de Guzmán el Bueno Campo, Julián [0000-0003-0009-138X] Picó, Yolanda [0000-0002-9545-0965] PBDEs PAHs PFRs PFASs Forest fires Coupled hillslopes Connectivity Forest fires can be a source of contamination because, among others, of the use of chemicals to their extinction (flame retardants, FRs), or by the production of Polycyclic Aromatic Hydrocarbons (PAHs) derived from high temperature alteration of organic matter. Up to our knowledge, this study is the first to assess the direct (PAHs 16 on the USA EPA's priority list), and indirect [tri- to hepta- brominated diphenyl ethers (PBDEs), organophosphorus flame retardants (PFRs) and perfluoroalkyl substances (PFASs)] contamination related to forest fires. The abundance and distribution of these contaminants were monitored on two Mediterranean hillslopes, one burned and one unburned, near Azuébar (SE Spain). Samples were taken in the foot, middle, and top of the slope, at two depths, and in two environments (under canopy and bare soil). Sediments were collected from sediment fences after erosive rainfall events. Most of the screened compounds were found in both, burned and control hillslopes, though significant differences were found between both. In burned soil, low concentrations of PBDEs (maximum ΣPBDEs: 7.3 ng g− 1), PFRs (664.4 ng g− 1) and PFASs (56.4 ng g− 1) were detected in relation to PAHs (Σ16 PAHs = 1255.3 ng g− 1). No significant influence of the hillslope position was observed for any of the contaminants but differences based on depth and vegetation presence tended to be significant, particularly for the PAHs. After the first erosive event, concentrations of PBDEs and PAHs were higher in sediment than in soil (ΣPBDEs: 17.8 ng g− 1 and Σ16 PAHs = 3154.2 ng g− 1) pointing out the importance of connectivity processes, especially shortly after fire. This work has been supported by the VALi + d postdoctoral contract (APOSTD/2014/010) of the Generalitat Valenciana. J. Campo also wants to acknowledge Brakkee and S. VredevoortJ for the analysis of samples; J. Westerveld and P. Serné for the help with all the laboratory work; and A. Revynthi, B. Peñarroya and P. Yousefi for their great support. M. Lorenzo was supported by the Foundation “Tatiana Pérez de Guzmán el Bueno” (predoctoral grant 2014). Peer reviewed 2019-06-05T10:26:03Z 2019-06-05T10:26:03Z 2017-12-15 artículo http://purl.org/coar/resource_type/c_6501 Science of the Total Environment 603-604: 330-339 (2017) 0048-9697 http://hdl.handle.net/10261/183384 10.1016/j.scitotenv.2017.06.005 1879-1026 http://dx.doi.org/10.13039/501100010805 http://dx.doi.org/10.13039/501100003359 en http://dx.doi.org/10.1016/j.scitotenv.2017.06.005 Sí none Elsevier |
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PBDEs PAHs PFRs PFASs Forest fires Coupled hillslopes Connectivity PBDEs PAHs PFRs PFASs Forest fires Coupled hillslopes Connectivity |
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PBDEs PAHs PFRs PFASs Forest fires Coupled hillslopes Connectivity PBDEs PAHs PFRs PFASs Forest fires Coupled hillslopes Connectivity Campo, Julián Lorenzo, María Cammeraat, E. Picó, Yolanda Andreu Pérez, V. Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean |
description |
Forest fires can be a source of contamination because, among others, of the use of chemicals to their extinction (flame retardants, FRs), or by the production of Polycyclic Aromatic Hydrocarbons (PAHs) derived from high temperature alteration of organic matter. Up to our knowledge, this study is the first to assess the direct (PAHs 16 on the USA EPA's priority list), and indirect [tri- to hepta- brominated diphenyl ethers (PBDEs), organophosphorus flame retardants (PFRs) and perfluoroalkyl substances (PFASs)] contamination related to forest fires. The abundance and distribution of these contaminants were monitored on two Mediterranean hillslopes, one burned and one unburned, near Azuébar (SE Spain). Samples were taken in the foot, middle, and top of the slope, at two depths, and in two environments (under canopy and bare soil). Sediments were collected from sediment fences after erosive rainfall events. Most of the screened compounds were found in both, burned and control hillslopes, though significant differences were found between both. In burned soil, low concentrations of PBDEs (maximum ΣPBDEs: 7.3 ng g− 1), PFRs (664.4 ng g− 1) and PFASs (56.4 ng g− 1) were detected in relation to PAHs (Σ16 PAHs = 1255.3 ng g− 1). No significant influence of the hillslope position was observed for any of the contaminants but differences based on depth and vegetation presence tended to be significant, particularly for the PAHs. After the first erosive event, concentrations of PBDEs and PAHs were higher in sediment than in soil (ΣPBDEs: 17.8 ng g− 1 and Σ16 PAHs = 3154.2 ng g− 1) pointing out the importance of connectivity processes, especially shortly after fire. |
author2 |
Generalitat Valenciana |
author_facet |
Generalitat Valenciana Campo, Julián Lorenzo, María Cammeraat, E. Picó, Yolanda Andreu Pérez, V. |
format |
artículo |
topic_facet |
PBDEs PAHs PFRs PFASs Forest fires Coupled hillslopes Connectivity |
author |
Campo, Julián Lorenzo, María Cammeraat, E. Picó, Yolanda Andreu Pérez, V. |
author_sort |
Campo, Julián |
title |
Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean |
title_short |
Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean |
title_full |
Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean |
title_fullStr |
Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean |
title_full_unstemmed |
Emerging contaminants related to the occurrence of forest fires in the Spanish Mediterranean |
title_sort |
emerging contaminants related to the occurrence of forest fires in the spanish mediterranean |
publisher |
Elsevier |
publishDate |
2017-12-15 |
url |
http://hdl.handle.net/10261/183384 http://dx.doi.org/10.13039/501100010805 http://dx.doi.org/10.13039/501100003359 |
work_keys_str_mv |
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