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Luarte T, Hirmas-Olivares A, Höfer J, Giesecke R, Mestre M, Guajardo-Leiva S, Castro-Nallar E, Pérez-Parada A, Chiang G, Lohmann R, Dachs J, Nash SB, Pulgar J, Pozo K, Přibylová PP, Martiník J, Galbán-Malagón C. Occurrence and diffusive air-seawater exchanges of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in Fildes Bay, King George Island, Antarctica. Sci Total Environ 2024; 908:168323. [PMID: 37949125 DOI: 10.1016/j.scitotenv.2023.168323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
We report the levels of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in seawater and air, and the air-sea dynamics through diffusive exchange analysis in Fildes Bay, King George Island, Antarctica, between November 2019 and January 30, 2020. Hexachlorobenzene (HCB) was the most abundant compound in both air and seawater with concentrations around 39 ± 2.1 pg m-3 and 3.2 ± 2.4 pg L-1 respectively. The most abundant PCB congener was PCB 11, with a mean of 3.16 ± 3.7 pg m-3 in air and 2.0 ± 1.1 pg L-1 in seawater. The fugacity gradient estimated for the OCP compounds indicate a predominance of net atmospheric deposition for HCB, α-HCH, γ-HCH, 4,4'-DDT, 4,4'-DDE and close to equilibrium for the PeCB compound. The observed deposition of some OCs may be driven by high biodegradation rates and/or settling fluxes decreasing the concentration of these compounds in surface waters, which is supported by the capacity of microbial consortium to degrade some of these compounds. The estimated fugacity gradients for PCBs showed differences between congeners, with net volatilization predominating for PCB-9, a trend close to equilibrium for PCB congeners 11, 28, 52, 101, 118, 138, and 153, and deposition for PCB 180. Snow amplification may play an important role for less hydrophobic PCBs, with volatilization predominating after snow/glacier melting. As hydrophobicity increases, the biological pump decreases the concentration of PCBs in seawater, reversing the fugacity gradient to atmospheric deposition. This study highlights the potential impacts of climate change, through glacier retreat, on the biogeochemistry of POPs, remobilizing those compounds previously trapped within the cryosphere which in turn will transform the Antarctic cryosphere into a secondary source of the more volatile POPs in coastal areas, influenced by snow and ice melting.
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Affiliation(s)
- Thais Luarte
- Programa de Doctorado en Medicina de la Conservación, Facultad Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370251, Chile; GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago 8580745, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Institute of Environment, Florida International University, University Park, Miami, FL 33199, USA.
| | - Andrea Hirmas-Olivares
- GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago 8580745, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Department of Ecology and Biodiversity, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370251, Chile
| | - Juan Höfer
- Escuela de Ciencias del Mar, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile; Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile
| | - Ricardo Giesecke
- Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile; Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Independencia 631, Valdivia, Chile
| | - Mireia Mestre
- Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile; Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain; Centro de Investigación Oceanográfica COPAS COASTAL, Universidad de Concepción, Chile
| | - Sergio Guajardo-Leiva
- Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Departamento de Microbiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile; Centro de Ecología Integrativa, Universidad de Talca, Campus Lircay, Talca, Chile
| | - Eduardo Castro-Nallar
- Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Departamento de Microbiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile; Centro de Ecología Integrativa, Universidad de Talca, Campus Lircay, Talca, Chile
| | - Andrés Pérez-Parada
- Departamento de Desarrollo Tecnológico, Centro Universitario Regional del Este (CURE), Universidad de la República, Ruta 9 y Ruta 15, Rocha 27000, Uruguay
| | - Gustavo Chiang
- Department of Ecology and Biodiversity, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370251, Chile; Centro de Investigación para Sustentabilidad, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona 18-26, Barcelona, Catalunya 08034, Spain
| | - Susan Bengtson Nash
- Southern Ocean Persistent Organic Pollutants Program, Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan, QLD 4111, Australia
| | - José Pulgar
- Department of Ecology and Biodiversity, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370251, Chile
| | - Karla Pozo
- Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Lientur 1457, Concepción, Chile; Masaryk University, Faculty of Science, RECETOX, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Petra P Přibylová
- Masaryk University, Faculty of Science, RECETOX, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Jakub Martiník
- Masaryk University, Faculty of Science, RECETOX, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Cristóbal Galbán-Malagón
- GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago 8580745, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Institute of Environment, Florida International University, University Park, Miami, FL 33199, USA.
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2
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Casas G, Iriarte J, D'Agostino LA, Roscales JL, Martinez-Varela A, Vila-Costa M, Martin JW, Jiménez B, Dachs J. Inputs, amplification and sinks of perfluoroalkyl substances at coastal Antarctica. Environ Pollut 2023; 338:122608. [PMID: 37742857 DOI: 10.1016/j.envpol.2023.122608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 09/26/2023]
Abstract
The sources, biogeochemical controls and sinks of perfluoroalkyl substances, such as perfluoroalkyl acids (PFAAs), in polar coastal regions are largely unknown. These were evaluated by measuring a large multi-compartment dataset of PFAAs concentrations at coastal Livingston and Deception Islands (maritime Antarctica) during three austral summers. PFAAs were abundant in atmospheric-derived samples (aerosols, rain, snow), consistent with the importance of atmospheric deposition as an input of PFAAs to Antarctica. Such PFAAs deposition was unequivocally demonstrated by the occurrence of PFAAs in small Antarctic lakes. Several lines of evidence supported the relevant amplification of PFAAs concentrations in surface waters driven by snow scavenging of sea-spray aerosol-bound PFAAs followed by snow-melting. For example, vertical profiles showed higher PFAAs concentrations at lower-salinity surface seawaters, and PFAAs concentrations in snow were significantly higher than in seawater. The higher levels of PFAAs at Deception Island than at Livingston Island are consistent with the semi-enclosed nature of the bay. Concentrations of PFOS decreased from 2014 to 2018, consistent with observations in other oceans. The sink of PFAAs due to the biological pump, transfer to the food web, and losses due to sea-spray aerosols alone are unlikely to have driven the decrease in PFOS concentrations. An exploratory assessment of the potential sinks of PFAAs suggests that microbial degradation of perfluoroalkyl sulfonates should be a research priority for the evaluation of PFAAs persistence in the coming decade.
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Affiliation(s)
- Gemma Casas
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Catalonia, Barcelona, Spain; Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, Spanish National Research Council (IQOG-CSIC), Madrid, Spain; BETA Tech Center, University of Vic, Catalonia, Vic, Spain
| | - Jon Iriarte
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Catalonia, Barcelona, Spain
| | - Lisa A D'Agostino
- Department of Environmental Science (ACES, Exposure & Effects), Science for Life Laboratory, Stockholm University, Stockholm, 106 91, Sweden
| | - Jose L Roscales
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, Spanish National Research Council (IQOG-CSIC), Madrid, Spain
| | - Alicia Martinez-Varela
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Catalonia, Barcelona, Spain
| | - Maria Vila-Costa
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Catalonia, Barcelona, Spain
| | - Jonathan W Martin
- Department of Environmental Science (ACES, Exposure & Effects), Science for Life Laboratory, Stockholm University, Stockholm, 106 91, Sweden
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, Spanish National Research Council (IQOG-CSIC), Madrid, Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Catalonia, Barcelona, Spain.
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Martinez-Varela A, Casas G, Berrojalbiz N, Lundin D, Piña B, Dachs J, Vila-Costa M. Metatranscriptomic responses and microbial degradation of background polycyclic aromatic hydrocarbons in the coastal Mediterranean and Antarctica. Environ Sci Pollut Res Int 2023; 30:119988-119999. [PMID: 37934408 DOI: 10.1007/s11356-023-30650-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/20/2023] [Indexed: 11/08/2023]
Abstract
Although microbial degradation is a key sink of polycyclic aromatic hydrocarbons (PAH) in surface seawaters, there is a dearth of field-based evidences of regional divergences in biodegradation and the effects of PAHs on site-specific microbial communities. We compared the magnitude of PAH degradation and its impacts in short-term incubations of coastal Mediterranean and the Maritime Antarctica microbiomes with environmentally relevant concentrations of PAHs. Mediterranean bacteria readily degraded the less hydrophobic PAHs, with rates averaging 4.72 ± 0.5 ng L h-1. Metatranscriptomic responses showed significant enrichments of genes associated to horizontal gene transfer, stress response, and PAH degradation, mainly harbored by Alphaproteobacteria. Community composition changed and increased relative abundances of Bacteroidota and Flavobacteriales. In Antarctic waters, there was no degradation of PAH, and minimal metatranscriptome responses were observed. These results provide evidence for factors such as geographic region, community composition, and pre-exposure history to predict PAH biodegradation in seawater.
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Affiliation(s)
- Alicia Martinez-Varela
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, c/ Jordi Girona 18-26, 08034, Barcelona, Catalunya, Spain
| | - Gemma Casas
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, c/ Jordi Girona 18-26, 08034, Barcelona, Catalunya, Spain
| | - Naiara Berrojalbiz
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, c/ Jordi Girona 18-26, 08034, Barcelona, Catalunya, Spain
| | - Daniel Lundin
- Centre for Ecology and Evolution in Microbial Model Systems, EEMiS, Linnaeus University, 35195, Kalmar, Sweden
| | - Benjamin Piña
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, c/ Jordi Girona 18-26, 08034, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, c/ Jordi Girona 18-26, 08034, Barcelona, Catalunya, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, c/ Jordi Girona 18-26, 08034, Barcelona, Catalunya, Spain.
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Galbán-Malagón C, Gómez-Aburto VA, Hirmas-Olivares A, Luarte T, Berrojalbiz N, Dachs J. Dichlorodiphenyltrichloroethane (DDT) and Dichlorodiphenyldichloroethylene (DDE) levels in air and surface sea waters along the Antarctic Peninsula. Mar Pollut Bull 2023; 197:115699. [PMID: 37924734 DOI: 10.1016/j.marpolbul.2023.115699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/25/2023] [Accepted: 10/19/2023] [Indexed: 11/06/2023]
Abstract
Persistent organic pollutants (POPs) are widespread worldwide, even reaching polar regions. Among POPs, dichlorodiphenyltrichloroethane (DDT) and their metabolites have been reported scarcely in the Antarctic environment. Here we report the levels of p,p'-DDT, o,p'-DDT, p,p'-DDE, and o,p'-DDE in air and water samples collected during austral summer 2009. The levels found ranged from 0.25 to 4.26 pg m-3 in the atmospheric samples while in the water samples ranged from 0.07 to 0.25 pg L-1. These concentrations were within the range of the reported concentrations in the last 20 years in Antarctica. However, the source ratio showed that most of p,p'-DDT comes from fresh applications and Dicofol formulations. The back-trajectories estimated for the air masses revealed that most of the p,p'-DDT came from the continental Antarctic peninsula and surrounding waters. The diffusive exchange direction showed that Antarctic surface waters are the final sink of the studied compounds during the survey period.
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Affiliation(s)
- Cristóbal Galbán-Malagón
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; Anillo en Ciencia y Tecnología Antártica POLARIX, Chile; Institute for Environment, Florida International University, Miami, FL, USA.
| | | | - Andrea Hirmas-Olivares
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - Thais Luarte
- GEMA Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile; PhD Program in Conservation Medicine, Universidad Andrés Bello, Santiago, Chile
| | - Naiara Berrojalbiz
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain
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Caracci E, Vega-Herrera A, Dachs J, Berrojalbiz N, Buonanno G, Abad E, Llorca M, Moreno T, Farré M. Micro(nano)plastics in the atmosphere of the Atlantic Ocean. J Hazard Mater 2023; 450:131036. [PMID: 36857820 DOI: 10.1016/j.jhazmat.2023.131036] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
The occurrence, long-range atmospheric transport and deposition of micro and nano plastics (MNPLs) remains un-quantified for the oceanic atmosphereopen ocean. Here we show the characterisation of MNPLs and the aerosol composition (PM10) in a north-south Atlantic transect from Vigo (Spain) to Punta Arenas (Chile). The analytical procedure to assess the composition of MNPLs consisted of a double suspect screening approach of the polymers and additives, the two constituents of plastics. Polymers were analysed by size exclusion chromatography coupled with high-resolution mass spectrometry using an atmospheric pressure photoionization source operated in positive and negative conditions (HPLC(SEC)-APPI(+/-)-HRMS). Plastic additives were screened with high-performance liquid chromatography coupled to high-resolution mass spectrometry using an electrospray ionisation source (HPLC-ESI(+/-)-HRMS). The most common polymers were polyethylene (PE), polypropylene (PP), polyisoprene (PI), and polystyrene (PS), with the highest polymer concentration being 51.7 ng·m-3 of PI. The air mass back trajectories showed the variable influence of oceanic and terrestrial air masses. These differences were reflected in the aerosol composition with different contributions of Saharan dust, sea spray aerosol, organic/elemental carbon, and MNPLs. Results showed that samples largely influenced by sea-spray and air masses originating from coastal South America and the north Atlantic subtropical gyre were more contaminated by MNPLs. Moreover, this information was complemented by the characterisation of the largest particles using scanning electron microscopy (SEM) and µ-Fourier Transform Infrared Spectroscopy (µ-FTIR). This work provides the first field evidence of the long-range transport of MNPLs in most of the Atlantic Ocean, as the result of dynamic coupling between the lower atmosphere and the surface ocean. Sea-spray formation arises as a key driver for the aerosolisation of MNPLs, and atmospheric transport followed by dry deposition may modulate the occurrence of MNPLs in large oceanic regions, issues that will require future research efforts.
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Affiliation(s)
- Elisa Caracci
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, FR, Cassino, Italy
| | - Albert Vega-Herrera
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Naiara Berrojalbiz
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Giorgio Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, FR, Cassino, Italy; International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Australia
| | - Esteban Abad
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Marta Llorca
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Teresa Moreno
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain.
| | - Marinella Farré
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C. Jordi Girona, 18-26, 08034 Barcelona, Spain.
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Iriarte J, Dachs J, Casas G, Martínez-Varela A, Berrojalbiz N, Vila-Costa M. Snow-Dependent Biogeochemical Cycling of Polycyclic Aromatic Hydrocarbons at Coastal Antarctica. Environ Sci Technol 2023; 57:1625-1636. [PMID: 36655903 PMCID: PMC9893724 DOI: 10.1021/acs.est.2c05583] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 05/28/2023]
Abstract
The temporal trend of polycyclic aromatic hydrocarbons (PAHs) in coastal waters with highly dynamic sources and sinks is largely unknown, especially for polar regions. Here, we show the concurrent measurements of 73 individual PAHs and environmental data, including the composition of the bacterial community, during three austral summers at coastal Livingston (2015 and 2018) and Deception (2017) islands (Antarctica). The Livingston 2015 campaign was characterized by a larger snow melting input of PAHs and nutrients. The assessment of PAH diagnostic ratios, such as parent to alkyl-PAHs or LMW to HMW PAHs, showed that there was a larger biodegradation during the Livingston 2015 campaign than in the Deception 2017 and Livingston 2018 campaigns. The biogeochemical cycling, including microbial degradation, was thus yearly dependent on snow-derived inputs of matter, including PAHs, consistent with the microbial community significantly different between the different campaigns. The bivariate correlations between bacterial taxa and PAH concentrations showed that a decrease in PAH concentrations was concurrent with the higher abundance of some bacterial taxa, specifically the order Pseudomonadales in the class Gammaproteobacteria, known facultative hydrocarbonoclastic bacteria previously reported in degradation studies of oil spills. The work shows the potential for elucidation of biogeochemical processes by intensive field-derived time series, even in the harsh and highly variable Antarctic environment.
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Hung H, Halsall C, Ball H, Bidleman T, Dachs J, De Silva A, Hermanson M, Kallenborn R, Muir D, Sühring R, Wang X, Wilson S. Climate change influence on the levels and trends of persistent organic pollutants (POPs) and chemicals of emerging Arctic concern (CEACs) in the Arctic physical environment - a review. Environ Sci Process Impacts 2022; 24:1577-1615. [PMID: 35244108 DOI: 10.1039/d1em00485a] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Climate change brings about significant changes in the physical environment in the Arctic. Increasing temperatures, sea ice retreat, slumping permafrost, changing sea ice regimes, glacial loss and changes in precipitation patterns can all affect how contaminants distribute within the Arctic environment and subsequently impact the Arctic ecosystems. In this review, we summarized observed evidence of the influence of climate change on contaminant circulation and transport among various Arctic environment media, including air, ice, snow, permafrost, fresh water and the marine environment. We have also drawn on parallel examples observed in Antarctica and the Tibetan Plateau, to broaden the discussion on how climate change may influence contaminant fate in similar cold-climate ecosystems. Significant knowledge gaps on indirect effects of climate change on contaminants in the Arctic environment, including those of extreme weather events, increase in forests fires, and enhanced human activities leading to new local contaminant emissions, have been identified. Enhanced mobilization of contaminants to marine and freshwater ecosystems has been observed as a result of climate change, but better linkages need to be made between these observed effects with subsequent exposure and accumulation of contaminants in biota. Emerging issues include those of Arctic contamination by microplastics and higher molecular weight halogenated natural products (hHNPs) and the implications of such contamination in a changing Arctic environment is explored.
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Affiliation(s)
- Hayley Hung
- Air Quality Processes Research Section, Environment and Climate Change Canada, 4905 Dufferin Street, Toronto, Ontario M5P 1W4, Canada.
| | - Crispin Halsall
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Hollie Ball
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Terry Bidleman
- Department of Chemistry, Umeå University, Umeå, SE-901 87, Sweden
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain
| | - Amila De Silva
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, Burlington, Ontario L7S 1A1, Canada
| | - Mark Hermanson
- Hermanson & Associates LLC, 2000 W 53rd Street, Minneapolis, Minnesota 55419, USA
| | - Roland Kallenborn
- Department of Arctic Technology, University Centre in Svalbard (UNIS), Longyearbyen, 9171, Norway
- Faculty of Chemistry, Biotechnology and Food Sciences, Norwegian University of Life Sciences (NMBU), Ås, 1432, Norway
| | - Derek Muir
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, Burlington, Ontario L7S 1A1, Canada
| | - Roxana Sühring
- Department for Environmental Science, Stockholm University, 114 19 Stockholm, Sweden
- Department of Chemistry and Biology, Ryerson University, Toronto, Ontario M5B 2K3, Canada
| | - Xiaoping Wang
- Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Simon Wilson
- Arctic Monitoring and Assessment Programme Secretariat, The Fram Centre, 9296 Tromsø, Norway
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Vila-Costa M, Lundin D, Casamayor EO, Meijer SN, Fernández P, Dachs J. Microbial metabolic routes in metagenome assembled genomes are mirrored by the mass balance of polycyclic aromatic hydrocarbons in a high altitude lake. Environ Pollut 2022; 308:119592. [PMID: 35688389 DOI: 10.1016/j.envpol.2022.119592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/20/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
Semivolatile organic pollutants have potential for long range atmospheric transport and can thus reach pristine remote lakes by atmospheric deposition. Polycyclic aromatic hydrocarbons (PAHs) are among the most abundant and toxic semivolatile pollutants affecting lakes, however, the main factors controlling their fate are still poorly known. Here we show two contrasting lines of evidence for the importance of microbial degradation on the environmental fate of PAHs in a high altitude deep lake. The first evidence is given by an assessment of the metagenomes from surface and deep waters from Lake Redon (Pyrenees Mountains), which shows the occurrence of the initial ring hydroxylating dioxygenases as well as other PAH degrading genes from the complete metabolic route of PAH degradation. The second line of evidence is by the application of an environmental fate model for PAHs to Lake Redon under two contrasting scenarios considering the inclusion or not of degradation. When degradation is included in the model, PAH concentrations in the sediment are predicted within a factor of two of those measured in Lake Redon. Finally, the extent of the degradation sink is quantified and compared to other cycling PAH fluxes in the lake.
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Affiliation(s)
- Maria Vila-Costa
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain.
| | - Daniel Lundin
- Centre for Ecology and Evolution in Microbial Model Systems - EEMiS, Linnaeus University, Sweden
| | - Emilio O Casamayor
- Integrative Freshwater Ecology Group, Center for Advanced Studies of Blanes, CEAB-CSIC, Blanes, Catalunya, Spain
| | - Sandra N Meijer
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Pilar Fernández
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
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10
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Martinez-Varela A, Casas G, Berrojalbiz N, Piña B, Dachs J, Vila-Costa M. Polycyclic Aromatic Hydrocarbon Degradation in the Sea-Surface Microlayer at Coastal Antarctica. Front Microbiol 2022; 13:907265. [PMID: 35910648 PMCID: PMC9329070 DOI: 10.3389/fmicb.2022.907265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
As much as 400 Tg of carbon from airborne semivolatile aromatic hydrocarbons is deposited to the oceans every year, the largest identified source of anthropogenic organic carbon to the ocean. Microbial degradation is a key sink of these pollutants in surface waters, but has received little attention in polar environments. We have challenged Antarctic microbial communities from the sea-surface microlayer (SML) and the subsurface layer (SSL) with polycyclic aromatic hydrocarbons (PAHs) at environmentally relevant concentrations. PAH degradation rates and the microbial responses at both taxonomical and functional levels were assessed. Evidence for faster removal rates was observed in the SML, with rates 2.6-fold higher than in the SSL. In the SML, the highest removal rates were observed for the more hydrophobic and particle-bound PAHs. After 24 h of PAHs exposure, particle-associated bacteria in the SML showed the highest number of significant changes in their composition. These included significant enrichments of several hydrocarbonoclastic bacteria, especially the fast-growing genera Pseudoalteromonas, which increased their relative abundances by eightfold. Simultaneous metatranscriptomic analysis showed that the free-living fraction of SML was the most active fraction, especially for members of the order Alteromonadales, which includes Pseudoalteromonas. Their key role in PAHs biodegradation in polar environments should be elucidated in further studies. This study highlights the relevant role of bacterial populations inhabiting the sea-surface microlayer, especially the particle-associated habitat, as relevant bioreactors for the removal of aromatic hydrocarbons in the oceans.
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Affiliation(s)
| | | | | | | | | | - Maria Vila-Costa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Spain
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11
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Luarte T, Tucca F, Nimptsch J, Woelfl S, Casas G, Dachs J, Chiang G, Pozo K, Barra R, Galbán-Malagón C. Occurrence and air-water diffusive exchange legacy persistent organic pollutants in an oligotrophic north Patagonian lake. Environ Res 2022; 204:112042. [PMID: 34555404 DOI: 10.1016/j.envres.2021.112042] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
In this study, the occurrence and diffusive air-water exchange of POPs in Panguipulli Lake (39°42'S-72°13'W), an oligotrophic lake located in northern Patagonia (Chile), were determined. Air and water samples were collected between March and August 2017 (autumn-winter) and analyzed for concentrations of OCPs (α-HCH, β-HCH, γ-HCH and HCB) and PCBs (PCB-28,-52,-101,-118,-153,-158,-180) using gas chromatography coupled with an electron capture detector. The direction of air-water exchange direction was evaluated using a fugacity approach (ƒw ƒa-1), and net diffusive exchange fluxes (FAW, ng m-2 d-1) were also estimated. Total ∑4OCP levels in air ranged from 0.31 to 37 pg m-3, with a maximum for β-HCH, while Σ7PCB levels ranged from 3.05 to 43 pg m-3. The most abundant congener was PCB-153, accounting for 60% of the total PCBs in air. Surface water ∑4OCPs measured in this study ranged from 1.01 to 3.9 pg L-1, with γ-HCH predominating, while surface water Σ7PCB levels ranged from 0.32 to 24 pg L-1, with PCB-101, PCB-118, and PCB-153 presenting the highest levels. Diffusive air-water exchanges of HCB, α-HCH, γ-HCH and PCBs in the form of volatilization from the lake to air predominated; in contrast, for β-HCH net deposition dominated during the sampling period. Estimates suggested faster microbial degradation in the dissolved phase compared to atmospheric degradation for all analyzed POPs. Overall, these results could indicate that the oligotrophic lakes of northern Patagonia act as a secondary source of atmospheric POPs, mainly PCBs and some OCPs. This study is a first attempt to understand the occurrence of POPs in air and water, as well as their dynamics in oligotrophic lakes in the southern hemisphere.
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Affiliation(s)
- Thais Luarte
- Departamento de Ciencias Biológicas, Facultad Ciencias de La Vida, Universidad Andres Bello, Santiago, Chile; Programa de Doctorado en Medicina de La Conservación, Facultad Ciencias de La Vida, Universidad Andres Bello, Santiago, Chile; GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago, Chile
| | - Felipe Tucca
- Instituto Tecnológico Del Salmón (INTESAL de SalmonChile), Av. Juan Soler Manfredini 41, Of. 1802, Puerto Montt, Chile.
| | - Jorge Nimptsch
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Casilla 567, Chile
| | - Stefan Woelfl
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Casilla 567, Chile
| | - Gemma Casas
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain
| | - Gustavo Chiang
- Departamento de Ciencias Biológicas, Facultad Ciencias de La Vida, Universidad Andres Bello, Santiago, Chile
| | - Karla Pozo
- RECETOX, Research Centre for Toxic Compounds in the Environment, Masaryk University, Kamenice 753/5, 625 00, Brno, Czech Republic; Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Lientur 1457, Concepción, Bío Bío, Chile
| | - Ricardo Barra
- Departamento de Sistemas Acuáticos, Facultad de Ciencias Ambientales y Centro EULA, Universidad de Concepción, 4070386, Chile
| | - Cristóbal Galbán-Malagón
- GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago, Chile.
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12
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Casas G, Martinez-Varela A, Vila-Costa M, Jiménez B, Dachs J. Rain Amplification of Persistent Organic Pollutants. Environ Sci Technol 2021; 55:12961-12972. [PMID: 34553911 PMCID: PMC8495897 DOI: 10.1021/acs.est.1c03295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/02/2021] [Accepted: 08/17/2021] [Indexed: 05/28/2023]
Abstract
Scavenging of gas- and aerosol-phase organic pollutants by rain is an efficient wet deposition mechanism of organic pollutants. However, whereas snow has been identified as a key amplification mechanism of fugacities in cold environments, rain has received less attention in terms of amplification of organic pollutants. In this work, we provide new measurements of concentrations of perfluoroalkyl substances (PFAS), organophosphate esters (OPEs), and polycyclic aromatic hydrocarbons (PAHs) in rain from Antarctica, showing high scavenging ratios. Furthermore, a meta-analysis of previously published concentrations in air and rain was performed, with 46 works covering different climatic regions and a wide range of chemical classes, including PFAS, OPEs, PAHs, polychlorinated biphenyls and organochlorine compounds, polybromodiphenyl ethers, and dioxins. The rain-aerosol (KRP) and rain-gas (KRG) partition constants averaged 105.5 and 104.1, respectively, but showed large variability. The high field-derived values of KRG are consistent with adsorption onto the raindrops as a scavenging mechanism, in addition to gas-water absorption. The amplification of fugacities by rain deposition was up to 3 orders of magnitude for all chemical classes and was comparable to that due to snow. The amplification of concentrations and fugacities by rain underscores its relevance, explaining the occurrence of organic pollutants in environments across different climatic regions.
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Affiliation(s)
- Gemma Casas
- Institute
of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain
- Department
of Instrumental Analysis and Environmental Chemistry, Institute of
Organic Chemistry, Spanish National Research
Council (IQOG-CSIC), Madrid 28006, Spain
| | - Alícia Martinez-Varela
- Institute
of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain
| | - Maria Vila-Costa
- Institute
of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain
| | - Begoña Jiménez
- Department
of Instrumental Analysis and Environmental Chemistry, Institute of
Organic Chemistry, Spanish National Research
Council (IQOG-CSIC), Madrid 28006, Spain
| | - Jordi Dachs
- Institute
of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Barcelona, Catalonia 08034, Spain
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13
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Cerro-Gálvez E, Dachs J, Lundin D, Fernández-Pinos MC, Sebastián M, Vila-Costa M. Responses of Coastal Marine Microbiomes Exposed to Anthropogenic Dissolved Organic Carbon. Environ Sci Technol 2021; 55:9609-9621. [PMID: 33606522 PMCID: PMC8491159 DOI: 10.1021/acs.est.0c07262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 05/23/2023]
Abstract
Coastal seawaters receive thousands of organic pollutants. However, we have little understanding of the response of microbiomes to this pool of anthropogenic dissolved organic carbon (ADOC). In this study, coastal microbial communities were challenged with ADOC at environmentally relevant concentrations. Experiments were performed at two Mediterranean sites with different impact by pollutants and nutrients: off the Barcelona harbor ("BCN"), and at the Blanes Bay ("BL"). ADOC additions stimulated prokaryotic leucine incorporation rates at both sites, indicating the use of ADOC as growth substrate. The percentage of "membrane-compromised" cells increased with increasing ADOC, indicating concurrent toxic effects of ADOC. Metagenomic analysis of the BCN community challenged with ADOC showed a significant growth of Methylophaga and other gammaproteobacterial taxa belonging to the rare biosphere. Gene expression profiles showed a taxon-dependent response, with significantly enrichments of transcripts from SAR11 and Glaciecola spp. in BCN and BL, respectively. Further, the relative abundance of transposon-related genes (in BCN) and transcripts (in BL) correlated with the number of differentially abundant genes (in BCN) and transcripts (in BLA), suggesting that microbial responses to pollution may be related to pre-exposure to pollutants, with transposons playing a role in adaptation to ADOC. Our results point to a taxon-specific response to low concentrations of ADOC that impact the functionality, structure and plasticity of the communities in coastal seawaters. This work contributes to address the influence of pollutants on microbiomes and their perturbation to ecosystem services and ocean health.
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Affiliation(s)
- Elena Cerro-Gálvez
- Department
of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya 08034, Spain
| | - Jordi Dachs
- Department
of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya 08034, Spain
| | - Daniel Lundin
- Centre
for Ecology and Evolution in Microbial Model Systems, EEMiS, Linnaeus University, Kalmar 35195, Sweden
| | | | - Marta Sebastián
- Department
of Marine Biology and Oceanography, ICM-CSIC, Barcelona, Catalunya 08003, Spain
| | - Maria Vila-Costa
- Department
of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya 08034, Spain
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14
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Martinez-Varela A, Cerro-Gálvez E, Auladell A, Sharma S, Moran MA, Kiene RP, Piña B, Dachs J, Vila-Costa M. Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean. Environ Microbiol 2021; 23:4532-4546. [PMID: 34169620 DOI: 10.1111/1462-2920.15646] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 06/16/2021] [Indexed: 12/13/2022]
Abstract
Thousands of man-made synthetic chemicals are released to oceans and compose the anthropogenic dissolved organic carbon (ADOC). Little is known about the effects of this chronic pollution on marine microbiome activities. In this study, we measured the pollution level at three sites in the Northeast Subarctic Pacific Ocean (NESAP) and investigated how mixtures of three model families of ADOC at different environmentally relevant concentrations affected naturally occurring marine bacterioplankton communities' structure and metabolic functioning. The offshore northernmost site (North) had the lowest concentrations of hydrocarbons, as well as organophosphate ester plasticizers, contrasting with the two other continental shelf sites, the southern coastal site (South) being the most contaminated. At North, ADOC stimulated bacterial growth and promoted an increase in the contribution of some Gammaproteobacteria groups (e.g. Alteromonadales) to the 16 rRNA pool. These groups are described as fast responders after oil spills. In contrast, minor changes in South microbiome activities were observed. Gene expression profiles at Central showed the coexistence of ADOC degradation and stress-response strategies to cope with ADOC toxicities. These results show that marine microbial communities at three distinct domains in NESAP are influenced by background concentrations of ADOC, expanding previous assessments for polar and temperate waters.
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Affiliation(s)
- Alícia Martinez-Varela
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Elena Cerro-Gálvez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Adrià Auladell
- Department of Marine Biology and Oceanography, Marine Science Institute, ICM-CSIC, Barcelona, Catalunya, Spain
| | - Shalabh Sharma
- Department of Marine Sciences, University of Georgia, Marine Sciences Building, Athens, GA, USA
| | - Mary Ann Moran
- Department of Marine Sciences, University of Georgia, Marine Sciences Building, Athens, GA, USA
| | - Ronald P Kiene
- Department of Marine Sciences, University of South Alabama, Mobile, AL, USA
| | - Benjamí Piña
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Barcelona, Catalunya, Spain
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15
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Corsolini S, Metzdorff A, Baroni D, Roscales JL, Jiménez B, Cerro-Gálvez E, Dachs J, Galbán-Malagón C, Audy O, Kohoutek J, Přibylova P, Poblete-Morales M, Avendaño-Herrera R, Bergami E, Pozo K. Legacy and novel flame retardants from indoor dust in Antarctica: Sources and human exposure. Environ Res 2021; 196:110344. [PMID: 33068585 DOI: 10.1016/j.envres.2020.110344] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/08/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
The air humidity in Antarctica is very low and this peculiar weather parameter make the use of flame retardants in research facilities highly needed for safety reasons, as fires are a major risk. Legacy and novel flame retardants (nFRs) including polybrominated diphenyl ethers (PBDEs), hexabromocyclododecanes (HBCDs), 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), Dechlorane Plus (DP), and other nFRs were measured in indoor dust samples collected at research Stations in Antarctica: Gabriel de Castilla, Spain (GCS), Julio Escudero, Chile (JES), and onboard the RRS James Clark Ross, United Kingdom (RRS JCR). The GC-HRMS and LC-MS-MS analyses of dust samples revealed ∑7PBDEs of 41.5 ± 43.8 ng/g in rooms at GCS, 18.7 ± 11.6 ng/g at JES, and 27.2 ± 37.9 ng/g onboard the RRS JCR. PBDE pattern was different between the sites and most abundant congeners were BDE-183 (40%) at GCS, BDE-99 (50%) at JES, and BDE-153 (37%) onboard the RRS JCR. The ∑(4)HBCDs were 257 ± 407 ng/g, 14.9 ± 14.5 ng/g, and 761 ± 1043 ng/g in indoor dust collected in rooms at GCS, JES, and RRS JCR, respectively. The ∑9nFRs were 224 ± 178 ng/g at GCS, 14.1 ± 13.8 ng/g at JES, and 194 ± 392 ng/g on the RRS JCR. Syn- and anti-DP were detected in most of the samples and both isomers showed the highest concentrations at GCS: 163 ± 93.6 and 48.5 ± 61.1 ng/g, respectively. The laboratory and living room showed the highest concentration of HBCDs, DPs, BTBPE. The wide variations in FR levels in dust from the three research facilities and between differently used rooms reflect the different origin of furnishing, building materials and equipment. The potential health risk associated to a daily exposure via dust ingestion was assessed for selected FRs: BDEs 47, 99, and 153, α-, β-, and γ-HBCD, BTBPE, syn- and anti-DP. Although the estimated exposures are below the available reference doses, caution is needed given the expected increasing use of novel chemicals without a comprehensive toxicological profile.
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Affiliation(s)
- Simonetta Corsolini
- Department of Physical, Earth and Environmental Sciences, Via P. A. Mattioli 4, University of Siena, 53100, Italy.
| | - América Metzdorff
- Department of Physical, Earth and Environmental Sciences, Via P. A. Mattioli 4, University of Siena, 53100, Italy
| | - Davide Baroni
- Department of Physical, Earth and Environmental Sciences, Via P. A. Mattioli 4, University of Siena, 53100, Italy
| | - Jose L Roscales
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Juan de La Cierva 3, 28006, Madrid, Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Juan de La Cierva 3, 28006, Madrid, Spain
| | - Elena Cerro-Gálvez
- Department of Environmental Chemistry, IDAEA-CSIC-Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC-Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
| | - Cristóbal Galbán-Malagón
- Centre for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago, Chile; Departamento de Ciencias de La Vida, Facultad de Ciencias de La Vida, Universidad Andrés Bello, Avda. República 252, Santiago, Chile
| | - Ondřej Audy
- Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic
| | - Jiří Kohoutek
- Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic
| | - Petra Přibylova
- Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic
| | - Matias Poblete-Morales
- Universidad Andrés Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Facultad de Ciencias de La Vida, Quillota # 980, 2520000, Viña Del Mar, Chile
| | - Ruben Avendaño-Herrera
- Universidad Andrés Bello, Laboratorio de Patología de Organismos Acuáticos y Biotecnología Acuícola, Facultad de Ciencias de La Vida, Quillota # 980, 2520000, Viña Del Mar, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), 2520000, Viña Del Mar, Chile
| | - Elisa Bergami
- Department of Physical, Earth and Environmental Sciences, Via P. A. Mattioli 4, University of Siena, 53100, Italy
| | - Karla Pozo
- Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic; Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Lientur #1457, Concepción, Chile
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16
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Casas G, Martínez-Varela A, Roscales JL, Vila-Costa M, Dachs J, Jiménez B. Enrichment of perfluoroalkyl substances in the sea-surface microlayer and sea-spray aerosols in the Southern Ocean. Environ Pollut 2020; 267:115512. [PMID: 32892018 DOI: 10.1016/j.envpol.2020.115512] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 08/16/2020] [Accepted: 08/22/2020] [Indexed: 05/06/2023]
Abstract
Sea-spray (or sea-salt) aerosol (SSA) formation and their subsequent atmospheric transport and deposition have been suggested to play a prominent role in the occurrence of ionizable perfluoroalkyl substances (PFAS) in the maritime Antarctica and other remote regions. However, field studies on SSA's role as vector of transport of PFAS are lacking. Following a multiphase approach, seawater (SW), the sea-surface microlayer (SML) and SSA were sampled simultaneously at South Bay (Livingston Island, Antarctica). Average PFAS concentrations were 313 pg L-1, 447 pg L-1, and 0.67 pg m-3 in SW, the SML and SSA, respectively. The enrichment factors of PFAS in the SML and SSA ranged between 1.2 and 5, and between 522 and 4690, respectively. This amplification of concentrations in the SML is consistent with the surfactant properties of PFAS, while the large enrichment of PFAS in atmospheric SSA may be facilitated by the large surface area of SSA and the sorption of PFAS to aerosol organic matter. This is the first field work assessing the simultaneous occurrence of PFAS in SW, the SML and SSA. The large measured amplification of concentrations in marine aerosols supports the role of SSA as a relevant vector for long-range atmospheric transport of PFAS.
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Affiliation(s)
- Gemma Casas
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalonia, Spain; Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Madrid, Spain
| | - Alícia Martínez-Varela
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalonia, Spain
| | - Jose L Roscales
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Madrid, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalonia, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalonia, Spain.
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Madrid, Spain
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17
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Tucca F, Luarte T, Nimptsch J, Woelfl S, Pozo K, Casas G, Dachs J, Barra R, Chiang G, Galbán-Malagón C. Sources and diffusive air-water exchange of polycyclic aromatic hydrocarbons in an oligotrophic North-Patagonian lake. Sci Total Environ 2020; 738:139838. [PMID: 32531599 DOI: 10.1016/j.scitotenv.2020.139838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are semivolatile organic compounds of environmental concern. This study aims to investigate the influence of local sources of anthropogenic PAHs and their air-water exchange fluxes in an oligotrophic North-Patagonian lake in Chile. The monitoring was carried out in Panguipulli Lake during a six-month period during the autumn and winter seasons (March to August 2017) using a high-volume air sampler and a pump system for water samples. We detected and quantified fifteen PAHs in the gas phase (mean ∑15PAHs = 11.6 ng m-3) and dissolved water phase (mean ∑15PAHs = 961.8 pg L-1). Methylphenanthrenes and pyrene dominated the concentrations of PAHs in the studied phases. To determine sources of PAHs we used the PAH ratios of Light Molecular Weight/Heavy Molecular Weight (∑LMW/∑HMW) and Phenanthrene/Anthracene (Phe/Ant). The PAH ratio results revealed a pyrogenic source. We estimated the air-water diffusive exchange fluxes and fugacity ratios for the studied compounds. In general, air-water diffusive exchanges of PAHs showed a net volatilization for the less hydrophobic (log KOW < 4) and lighter PAHs (MW ≤ 170 g mol-1), and a net deposition trend for the more hydrophobic (log KOW 4-7) and higher molecular weight PAHs (MW ≥ 178 g mol-1). We found a significant correlation between log water/air fugacity ratios and log KOW of PAHs. Therefore, it is suggested that this oligotrophic lake acts as a sink by accumulating hydrophobic and mid-high molecular weight PAHs derived mainly from pyrogenic sources. This study is the first attempt to understand the sources and behavior of PAHs in oligotrophic lakes in the Southern Chile where information is scarce regarding the occurrence of PAHs.
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Affiliation(s)
- Felipe Tucca
- Norwegian Institute for Water Research (NIVA) Chile, Puerto Varas, Chile; Departamento de Ciencias Biológicas, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile.
| | - Thais Luarte
- Departamento de Ciencias Biológicas, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; Doctorado en Medicina de la Conservación, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - Jorge Nimptsch
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Casilla 567, Chile
| | - Stefan Woelfl
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Casilla 567, Chile
| | - Karla Pozo
- Facultad de Ingeniería & Tecnología, Universidad San Sebastian, Concepción, Chile
| | - Gemma Casas
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA - CSIC), Barcelona, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA - CSIC), Barcelona, Spain
| | - Ricardo Barra
- Department of Aquatic Systems, Faculty of Environmental Sciences, EULA Centre, University of Concepcion, Concepción, Chile
| | - Gustavo Chiang
- Departamento de Ciencias Biológicas, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; Melimoyu Ecosystem Research Institute, Fundación MERI, Santiago 7650720, Chile
| | - Cristóbal Galbán-Malagón
- Departamento de Ciencias Biológicas, Facultad Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; GEMA, Center for Genomics, Ecology & Environment, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile.
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Lowry G, Field J, Westerhoff P, Zimmerman J, Alvarez P, Boehm A, Crittenden J, Dachs J, Diamond M, Eckelman M, Gardea-Torresdey J, Giammar D, Hofstetter T, Hornbuckle K, Jiang G, Li XD, Leusch F, Mihelcic J, Miller S, Pruden A, Raskin L, Richardson S, Scheringer M, Schlenk D, Strathmann T, Tao S, Waite TD, Wang P, Wang S. Why Was My Paper Rejected without Review? Environ Sci Technol 2020; 54:11641-11644. [PMID: 32936617 DOI: 10.1021/acs.est.0c05784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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19
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Martinez-Varela A, Casas G, Piña B, Dachs J, Vila-Costa M. Large Enrichment of Anthropogenic Organic Matter Degrading Bacteria in the Sea-Surface Microlayer at Coastal Livingston Island (Antarctica). Front Microbiol 2020; 11:571983. [PMID: 33013806 PMCID: PMC7516020 DOI: 10.3389/fmicb.2020.571983] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/14/2020] [Indexed: 01/04/2023] Open
Abstract
The composition of bacteria inhabiting the sea-surface microlayer (SML) is poorly characterized globally and yet undescribed for the Southern Ocean, despite their relevance for the biogeochemistry of the surface ocean. We report the abundances and diversity of bacteria inhabiting the SML and the subsurface waters (SSL) determined from a unique sample set from a polar coastal ecosystem (Livingston Island, Antarctica). From early to late austral summer (January–March 2018), we consistently found a higher abundance of bacteria in the SML than in the SSL. The SML was enriched in some Gammaproteobacteria genus such as Pseudoalteromonas, Pseudomonas, and Colwellia, known to degrade a wide range of semivolatile, hydrophobic, and surfactant-like organic pollutants. Hydrocarbons and other synthetic chemicals including surfactants, such as perfluoroalkyl substances (PFAS), reach remote marine environments by atmospheric transport and deposition and by oceanic currents, and are known to accumulate in the SML. Relative abundances of specific SML-enriched bacterial groups were significantly correlated to concentrations of PFASs, taken as a proxy of hydrophobic anthropogenic pollutants present in the SML and its stability. Our observations provide evidence for an important pollutant-bacteria interaction in the marine SML. Given that pollutant emissions have increased during the Anthropocene, our results point to the need to assess chemical pollution as a factor modulating marine microbiomes in the contemporaneous and future oceans.
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Affiliation(s)
- Alícia Martinez-Varela
- Department of Environmental Chemistry, Institut de Diagnóstic Ambiental i Estudis de l'aigua, Consejo Superior de Investigaciones Científicas (IDAEA-CSIC), Barcelona, Spain
| | - Gemma Casas
- Department of Environmental Chemistry, Institut de Diagnóstic Ambiental i Estudis de l'aigua, Consejo Superior de Investigaciones Científicas (IDAEA-CSIC), Barcelona, Spain
| | - Benjamin Piña
- Department of Environmental Chemistry, Institut de Diagnóstic Ambiental i Estudis de l'aigua, Consejo Superior de Investigaciones Científicas (IDAEA-CSIC), Barcelona, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institut de Diagnóstic Ambiental i Estudis de l'aigua, Consejo Superior de Investigaciones Científicas (IDAEA-CSIC), Barcelona, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, Institut de Diagnóstic Ambiental i Estudis de l'aigua, Consejo Superior de Investigaciones Científicas (IDAEA-CSIC), Barcelona, Spain
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Cerro-Gálvez E, Roscales JL, Jiménez B, Sala MM, Dachs J, Vila-Costa M. Microbial responses to perfluoroalkyl substances and perfluorooctanesulfonate (PFOS) desulfurization in the Antarctic marine environment. Water Res 2020; 171:115434. [PMID: 31927092 DOI: 10.1016/j.watres.2019.115434] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 12/19/2019] [Accepted: 12/21/2019] [Indexed: 05/27/2023]
Abstract
Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) acids are ubiquitous in the oceans, including remote regions, and are toxic to fish and mammals. The impact to the lowest trophic levels of the food web, however, remains unknown. We challenged natural bacterial communities inhabiting Antarctic coastal waters (Deception Island) with PFOS and PFOA concentrations ranging from 2 ng/L to 600 ng/L that selected for tolerant taxa. After 48 h, concentrations of PFOS decreased by more than 50% and sulfur metabolism-related transcripts were significantly enriched in the treatments suggesting desulfurization of PFOS. Conversely, no significant differences were found between initial and final PFOA concentrations. Gammaproteobacteria and Roseobacter, two abundant groups of marine bacteria, increased their relative activity after 24 h of incubation, whereas Flavobacteriia became the main contributor in the treatments after 6 days. Community activities (extracellular enzyme activity and absolute number of transcripts) were higher in the treatments than in the controls, while bacterial abundances were lower in the treatments, suggesting a selection of PFOS and PFOA tolerant community in the exposed treatments. Our results show a direct effect of PFOS and PFOA exposure on the composition and functionality of natural Antarctic marine microbial communities. While no evidence of defluorination of PFOS or PFOA was detected, probable desulfurization of PFOS depicts a direct link with the sulfur biogeochemistry of the ocean.
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Affiliation(s)
- Elena Cerro-Gálvez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalunya, Spain
| | - Jose L Roscales
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Madrid, Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Madrid, Spain
| | - M Montserrat Sala
- Department of Marine Biology and Oceanography, Institute of Marine Sciences (ICM-CSIC), Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalunya, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Catalunya, Spain.
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21
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González-Gaya B, Casal P, Jurado E, Dachs J, Jiménez B. Vertical transport and sinks of perfluoroalkyl substances in the global open ocean. Environ Sci Process Impacts 2019; 21:1957-1969. [PMID: 31393489 DOI: 10.1039/c9em00266a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The ubiquitous occurrence of perfluoroalkyl substances (PFAS) in the open ocean has been previously documented, but their vertical transport and oceanic sinks have not been comprehensively characterized and quantified at the oceanic scale. During the Malaspina 2010 circumnavigation expedition, 21 PFAS were measured at the surface and at the deep chlorophyll maximum (DCM) in the Atlantic, Indian and Pacific oceans. In this work, we report an extended data set of PFAS dissolved phase concentrations at the DCM. ∑PFAS at the DCM varied from 130 to 11 000 pg L-1, with a global average value of 500 pg L-1. Perfluorooctanesulfonate (PFOS) abundance contributed 39% of ∑PFAS, followed by perfluorodecanoate (PFDA, 17%), and perfluorohexanoate (PFHxA, 12%). The relative contribution of the remaining compounds was below 10%, with perfluorooctanoate (PFOA) contributing only 5% to PFAS measured at the DCM. Estimates of vertical diffusivity, derived from microstructure turbulence observations in the upper (<300 m) water column, allowed the derivation of PFAS eddy diffusive fluxes from concurrent field measurements of eddy diffusivity and PFAS concentrations. The PFAS concentrations at the DCM predicted from an eddy diffusivity model were lower than field-measured concentrations, suggesting a relevant role of other vertical transport mechanisms. Settling fluxes of organic matter bound PFAS (biological pump), oceanic circulation and potential, yet un-reported, biological transformations are discussed.
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Affiliation(s)
- Belén González-Gaya
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. and Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain and Department of Analytical Chemistry, Plentzia Marine Station of the University of the Basque Country (EHU/UPV), Areatza Pasealekua 47, 48620 Plentzia, Basque Country, Spain
| | - Paulo Casal
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain
| | - Elena Jurado
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain and Engineering Department, La Salle Campus Barcelona, Ramon Llull University (URL), Sant Joan de la Salle, 42, 08022 Barcelona, Catalonia, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC), Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
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22
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Cerro-Gálvez E, Sala MM, Marrasé C, Gasol JM, Dachs J, Vila-Costa M. Modulation of microbial growth and enzymatic activities in the marine environment due to exposure to organic contaminants of emerging concern and hydrocarbons. Sci Total Environ 2019; 678:486-498. [PMID: 31077927 DOI: 10.1016/j.scitotenv.2019.04.361] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 05/06/2023]
Abstract
Organic pollutants are continuously being introduced in seawater with uncharacterized impacts on the engines of the marine biogeochemical cycles, the microorganisms. The effects on marine microbial communities were assessed for perfluoroalkyl substances, organophosphate esters flame retardants and plasticizers, polycyclic aromatic hydrocarbons, and n-alkanes. Dose-response experiments were performed at three stations and at three depths in the NW Mediterranean with contrasted nutrient and pollutant concentrations. In these experiments, the microbial growth rates, the abundances of the main bacterial groups, measured by Catalyzed Reporter Deposition Fluorescence In Situ Hybridization (CARD-FISH), and extracellular enzymatic activities, were quantified. Increasing concentrations of organic pollutants (OPs) promoted different responses in the communities that were compound, organism and nutrient availability (trophic status). The largest differences between OP treatments and controls in the growth rates of both heterotrophic and phototrophic microbial groups were observed in seawater from the deep chlorophyll maxima. Furthermore, there was a compound specific stimulation of different extracellular enzymatic activities after the exposure to OPs. Our results revealed that marine microbial communities reacted not only to hydrocarbons, known to be used as a carbon source, but also to low concentrations of organic pollutants of emerging concern in a complex manner, reflecting the variability of various environmental variables. Multiple linear regressions suggested that organic pollutants modulated the bacterial growth and extracellular enzymatic activities, but this modulation was of lower magnitude than the observed pronounced response of the microbial community to nutrient availability.
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Affiliation(s)
- Elena Cerro-Gálvez
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - M Montserrat Sala
- Department of Marine Biology and Oceanography, ICM-CSIC, Barcelona, Catalunya, Spain
| | - Cèlia Marrasé
- Department of Marine Biology and Oceanography, ICM-CSIC, Barcelona, Catalunya, Spain
| | - Josep M Gasol
- Department of Marine Biology and Oceanography, ICM-CSIC, Barcelona, Catalunya, Spain; Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, WA, Australia
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain.
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Casal P, Casas G, Vila-Costa M, Cabrerizo A, Pizarro M, Jiménez B, Dachs J. Snow Amplification of Persistent Organic Pollutants at Coastal Antarctica. Environ Sci Technol 2019; 53:8872-8882. [PMID: 31298532 DOI: 10.1021/acs.est.9b03006] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Many legacy and emerging persistent organic pollutants (POPs) have been reported in polar regions, and act as sentinels of global pollution. Maritime Antarctica is recipient of abundant snow precipitation. Snow scavenges air pollutants, and after snow melting, it can induce an unquantified and poorly understood amplification of concentrations of POPs. Air, snow, the fugacity in soils and snow, seawater and plankton were sampled concurrently from late spring to late summer at Livingston Island (Antarctica). Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) concentrations in snow and air were close to equilibrium. POPs in soils showed concentrations close to soil-air equilibrium or net volatilization depending on chemical volatility. Seawater-air fugacity ratios were highly correlated with the product of the snow-air partition coefficient and the Henry's law constant (KSA H'), a measure of snow amplification of fugacity. Therefore, coastal seawater mirrored the PCB congener profile and increased concentrations in snowmelt due to snowpack releasing POPs to seawater. The influence of snowpack and glacier inputs was further evidenced by the correlation between net volatilization fluxes of PCBs and seawater salinity. A meta-analysis of KSA, estimated as the ratio of POP concentrations in snow and air from previously reported simultaneous field measurements, showed that snow amplification is relevant for diverse families of POPs, independent of their volatility. We claim that the potential impact of atmospheric pollution on aquatic ecosystems has been under-predicted by only considering air-water partitioning, as snow amplification influences, and may even control, the POP occurrence in cold environments.
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Affiliation(s)
- Paulo Casal
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona , Catalonia 08034 , Spain
| | - Gemma Casas
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona , Catalonia 08034 , Spain
| | - Maria Vila-Costa
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona , Catalonia 08034 , Spain
| | - Ana Cabrerizo
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona , Catalonia 08034 , Spain
| | - Mariana Pizarro
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona , Catalonia 08034 , Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry , Institute of Organic Chemistry (IQOG-CSIC) , Madrid 28006 , Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona , Catalonia 08034 , Spain
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24
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Cerro-Gálvez E, Casal P, Lundin D, Piña B, Pinhassi J, Dachs J, Vila-Costa M. Microbial responses to anthropogenic dissolved organic carbon in the Arctic and Antarctic coastal seawaters. Environ Microbiol 2019; 21:1466-1481. [PMID: 30838733 DOI: 10.1111/1462-2920.14580] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/21/2019] [Accepted: 03/03/2019] [Indexed: 11/29/2022]
Abstract
Thousands of semi-volatile hydrophobic organic pollutants (OPs) reach open oceans through atmospheric deposition, causing a chronic and ubiquitous pollution by anthropogenic dissolved organic carbon (ADOC). Hydrophobic ADOC accumulates in cellular lipids, inducing harmful effects on marine biota, and can be partially prone to microbial degradation. Unfortunately, their possible effects on microorganisms, key drivers of global biogeochemical cycles, remain unknown. We challenged coastal microbial communities from Ny-Ålesund (Arctic) and Livingston Island (Antarctica) with ADOC concentrations within the range of oceanic concentrations in 24 h. ADOC addition elicited clear transcriptional responses in multiple microbial heterotrophic metabolisms in ubiquitous groups such as Flavobacteriia, Gammaproteobacteria and SAR11. Importantly, a suite of cellular adaptations and detoxifying mechanisms, including remodelling of membrane lipids and transporters, was detected. ADOC exposure also changed the composition of microbial communities, through stimulation of rare biosphere taxa. Many of these taxa belong to recognized OPs degraders. This work shows that ADOC at environmentally relevant concentrations substantially influences marine microbial communities. Given that emissions of organic pollutants are growing during the Anthropocene, the results shown here suggest an increasing influence of ADOC on the structure of microbial communities and the biogeochemical cycles regulated by marine microbes.
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Affiliation(s)
- Elena Cerro-Gálvez
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
| | - Paulo Casal
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
| | - Daniel Lundin
- Centre for Ecology and Evolution in Microbial Model Systems, EEMiS, Linnaeus University, Barlastgatan 11, 39182, Kalmar, Sweden
| | - Benjamin Piña
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
| | - Jarone Pinhassi
- Centre for Ecology and Evolution in Microbial Model Systems, EEMiS, Linnaeus University, Barlastgatan 11, 39182, Kalmar, Sweden
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
| | - Maria Vila-Costa
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, 08034, Catalunya, Spain
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Vila-Costa M, Sebastián M, Pizarro M, Cerro-Gálvez E, Lundin D, Gasol JM, Dachs J. Microbial consumption of organophosphate esters in seawater under phosphorus limited conditions. Sci Rep 2019; 9:233. [PMID: 30659251 PMCID: PMC6338803 DOI: 10.1038/s41598-018-36635-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 11/21/2018] [Indexed: 11/09/2022] Open
Abstract
The anthropogenic perturbation of the phosphorus (P) marine biogeochemical cycle due to synthetic organophosphorus compounds remains unexplored. The objective of this work was to investigate the microbial degradation of organophosphate triesters (OPEs), widely used as plasticizers and flame retardants, in seawater and their effects on the physiology and composition of microbial communities. Experiments were performed in July 2014 using surface seawater from the Blanes Bay Microbial Observatory (NW Mediterranean) to which OPEs were added at environmentally relevant concentrations. The concentrations of OPEs in the dissolved-phase generally decreased after 24 hours of incubation at in situ conditions. The fitted first order reaction constants were significantly different than zero for the trihaloalkyl phosphate, tris(2-chloroethyl) phosphate and trialyl phosphate tricresyl phosphate. In general, OPEs triggered an increase of the percentage of actively respiring bacteria, total bacterial activity, and the number of low-nucleic acid bacteria, and a decrease in the percentage of membrane-compromised bacteria. Members of some bacterial groups, in particular Flavobacteria, increased their specific activity, indicating that seawater contains bacteria with the potential to degrade OPEs. In aged seawater that was presumably depleted of labile dissolved organic carbon and inorganic P, alkaline phosphatase activities significantly decreased when OPEs were added, indicating a relief on P stress, consistent with the role of OPEs as potential P sources.
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Affiliation(s)
- Maria Vila-Costa
- Department of Environmental Chemistry, IDAEA-CSIC-Jordi Girona 18-26, Barcelona, 08034, Barcelona, Catalunya, Spain.
| | - Marta Sebastián
- Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, CSIC, Barcelona, Catalunya, Spain.,Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, 35214, Gran Canaria, Spain
| | - Mariana Pizarro
- Department of Environmental Chemistry, IDAEA-CSIC-Jordi Girona 18-26, Barcelona, 08034, Barcelona, Catalunya, Spain
| | - Elena Cerro-Gálvez
- Department of Environmental Chemistry, IDAEA-CSIC-Jordi Girona 18-26, Barcelona, 08034, Barcelona, Catalunya, Spain
| | - Daniel Lundin
- Centre for Ecology and Evolution in Microbial Model Systems, EEMiS, Linnaeus University, Barlastgatan 11, 391 82, Kalmar, Sweden
| | - Josep M Gasol
- Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC-Jordi Girona 18-26, Barcelona, 08034, Barcelona, Catalunya, Spain
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Casal P, Cabrerizo A, Vila-Costa M, Pizarro M, Jiménez B, Dachs J. Pivotal Role of Snow Deposition and Melting Driving Fluxes of Polycyclic Aromatic Hydrocarbons at Coastal Livingston Island (Antarctica). Environ Sci Technol 2018; 52:12327-12337. [PMID: 30277758 DOI: 10.1021/acs.est.8b03640] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The atmosphere-land-ocean dynamics of semivolatile organic compounds in polar regions is poorly understood, also for the abundant and ubiquitous polycyclic aromatic hydrocarbons (PAHs). We report the concentrations and fluxes of PAHs in a polar coastal ecosystem (Livingston Island, Antarctica). From late spring (December 2014) to late summer (February 2015), we sampled air, snow, coastal seawater, plankton, and the fugacity in soils and snow. The concentrations of PAHs in seawater were low but increased during the austral summer. The PAH concentrations in snow were significantly higher than in coastal seawater. Soil-air fugacity ratios showed a net volatilization of PAH when soils were covered with lichens, and close to air-soil equilibrium for bare soils. Concentrations in surface snow were also close to equilibrium with atmospheric PAHs. Conversely, there was a net diffusive deposition of PAHs to coastal seawater during late spring, but a net volatilization from seawater during late summer. Volatilization fluxes were correlated with seawater temperature and salinity, consistent with a key role of snowmelt to the fluxes and dissolved phase concentrations during the austral summer. The comprehensive assessment provided here shows that the fugacity amplification in snow is transferred to soils and coastal seawater supporting PAH concentrations and fluxes.
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Affiliation(s)
- Paulo Casal
- Institute of Environmental Assessment and Water Research , Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26 , Barcelona , Catalonia 08034 , Spain
| | - Ana Cabrerizo
- Institute of Environmental Assessment and Water Research , Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26 , Barcelona , Catalonia 08034 , Spain
| | - Maria Vila-Costa
- Institute of Environmental Assessment and Water Research , Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26 , Barcelona , Catalonia 08034 , Spain
| | - Mariana Pizarro
- Institute of Environmental Assessment and Water Research , Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26 , Barcelona , Catalonia 08034 , Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry , Spanish National Research Council (IQOG-CSIC) , Madrid 28006 , Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research , Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26 , Barcelona , Catalonia 08034 , Spain
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Casal P, Castro-Jiménez J, Pizarro M, Katsoyiannis A, Dachs J. Seasonal soil/snow-air exchange of semivolatile organic pollutants at a coastal arctic site (Tromsø, 69°N). Sci Total Environ 2018; 636:1109-1116. [PMID: 29913573 DOI: 10.1016/j.scitotenv.2018.04.330] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/03/2018] [Accepted: 04/24/2018] [Indexed: 06/08/2023]
Abstract
Soils are a major reservoir of semivolatile organic pollutants such as polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), and exert a control on their atmospheric occurrence. We present here an assessment of the atmospheric occurrence and seasonality of soil/snow-air partitioning and exchange of PCBs, PAHs, hexachlorobenzene (HCB), and hexachlorocyclohexanes (HCHs) in the arctic city Tromsø, northern Norway. The fugacities of the organic pollutants in soils and snow were determined using a soil fugacity sampler by equilibrating the air concentrations with those in the surface soil/snow. The concentrations in soils did not show a significant seasonality. Conversely, the ambient air concentrations and the soil (or snow) fugacity showed a clear seasonality for PCBs, HCH, HCB and some PAHs, related to temperature. Fugacities in soil/snow were correlated with those in the ambient gas phase, suggesting a close seasonal air-soil/snow coupling. Generally, there was a net deposition or close to equilibrium conditions during the winter, which contrasts with the net volatilization observed during the warmer periods. The chemicals with lower octanol-air partition coefficients showed a larger tendency for being volatilized and thus remobilized from this coastal arctic environment. Conversely, the more hydrophobic compounds were close to air-soil/snow equilibrium or showed a net deposition.
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Affiliation(s)
- Paulo Casal
- Department of Environmental Chemistry (IDAEA-CSIC), Barcelona, Catalunya, Spain
| | - Javier Castro-Jiménez
- Department of Environmental Chemistry (IDAEA-CSIC), Barcelona, Catalunya, Spain; Aix Marseille Univ, University de Toulon, CNRS, IRD, MIO UM 110, Marseille, France
| | - Mariana Pizarro
- Department of Environmental Chemistry (IDAEA-CSIC), Barcelona, Catalunya, Spain
| | | | - Jordi Dachs
- Department of Environmental Chemistry (IDAEA-CSIC), Barcelona, Catalunya, Spain.
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Galbán-Malagón CJ, Hernán G, Abad E, Dachs J. Persistent organic pollutants in krill from the Bellingshausen, South Scotia, and Weddell Seas. Sci Total Environ 2018; 610-611:1487-1495. [PMID: 28898957 DOI: 10.1016/j.scitotenv.2017.08.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 05/22/2023]
Abstract
Persistent organic pollutants (POPs) reach Antarctica through atmospheric transport, oceanic currents, and to minor extent, by migratory animals. The Southern Ocean is a net sink for many POPs, with a key contribution of the settling fluxes of POPs bound to organic matter (biological pump). However, little is known about POP transfer through the food web in the Southern Ocean and Antarctic waters, where krill is an important ecological node. In this study, we assessed the occurrence of polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyls (PCBs) in Antarctic krill (Euphausia superba) from the Bellingshausen, South Scotia and Weddell Seas around the Antarctic Peninsula. The concentrations of PCDD/Fs, PBDEs and PCBs in krill showed a large variability and the average were higher (generally within a factor 3) than those previously reported for eastern Antarctica. This result highlights regional differences related to atmospheric transport and deposition, and also probable regional sources due to human activities. Bioaccumulation and biomagnification factors for PCBs in krill were estimated using previously reported phytoplankton and seawater concentrations for this region. These suggested a near water-krill equilibrium for PCBs, which was not observed for water-phytoplankton partitioning. The estimated removal settling fluxes of PCBs due to the biological pump were several orders of magnitude higher than the estimated fluxes of PCBs transferred from phytoplankton to krill.
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Affiliation(s)
- Cristóbal J Galbán-Malagón
- Departmento de Ecología y Biodiversidad, Facultad de Ecología y Recursos Naturales, Universidad Andres Bello, Santiago, Chile; Fundación MERI, Av. Kennedy 5682, Vitacura, Santiago, Chile.
| | - Gema Hernán
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain; Department of Ecology and Marine Resources, Mediterranean Institute for Advanced Studies (IMEDEA-CSIC-UIB), Esporles, Illes Balears, Spain
| | - Esteban Abad
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain
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Fernández-Pinos MC, Vila-Costa M, Arrieta JM, Morales L, González-Gaya B, Piña B, Dachs J. Dysregulation of photosynthetic genes in oceanic Prochlorococcus populations exposed to organic pollutants. Sci Rep 2017; 7:8029. [PMID: 28808349 PMCID: PMC5556013 DOI: 10.1038/s41598-017-08425-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 07/12/2017] [Indexed: 11/09/2022] Open
Abstract
The impact of organic pollutants on oceanic ecosystem functioning is largely unknown. Prochlorococcus, the most abundant known photosynthetic organism on Earth, has been suggested to be especially sensible to exposure to organic pollutants, but the sub-lethal effects of organic pollutants on its photosynthetic function at environmentally relevant concentrations and mixtures remain unexplored. Here we show the modulation of the expression of two photosynthetic genes, rbcL (RuBisCO large subunit) and psbA (PSII D1 protein), of oceanic populations of Prochlorococcus from the Atlantic, Indian and Pacific Oceans when exposed to mixtures of organic pollutants consisting of the non-polar fraction of a seawater extract. This mixture included most persistent organic pollutants, semivolatile aromatic-like compounds, and the unresolved complex mixture of hydrocarbons. Prochlorococcus populations in the controls showed the expected diel cycle variations in expression of photosynthetic genes. However, exposure to a complex mixture at concentrations only 2-fold above the environmental levels resulted in a decrease of expression of both genes, suggesting an effect on the photosynthetic function. While organic pollutant effects on marine phytoplankton have been already demonstrated at the cellular level, this is the first field study showing alterations at the molecular level of the photosynthetic function due to organic pollutants.
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Affiliation(s)
| | - Maria Vila-Costa
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jesús M Arrieta
- Spanish Institute of Oceanography (IEO), Oceanographic Center of The Canary Islands, Santa Cruz de Tenerife, 38180, Spain.,Department of Global Change Research, IMEDEA-UIB-CSIC, Esporles, Mallorca, Spain
| | - Laura Morales
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Belén González-Gaya
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Benjamin Piña
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain.
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30
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Mayol E, Arrieta JM, Jiménez MA, Martínez-Asensio A, Garcias-Bonet N, Dachs J, González-Gaya B, Royer SJ, Benítez-Barrios VM, Fraile-Nuez E, Duarte CM. Long-range transport of airborne microbes over the global tropical and subtropical ocean. Nat Commun 2017; 8:201. [PMID: 28779070 PMCID: PMC5544686 DOI: 10.1038/s41467-017-00110-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 06/01/2017] [Indexed: 11/26/2022] Open
Abstract
The atmosphere plays a fundamental role in the transport of microbes across the planet but it is often neglected as a microbial habitat. Although the ocean represents two thirds of the Earth’s surface, there is little information on the atmospheric microbial load over the open ocean. Here we provide a global estimate of microbial loads and air-sea exchanges over the tropical and subtropical oceans based on the data collected along the Malaspina 2010 Circumnavigation Expedition. Total loads of airborne prokaryotes and eukaryotes were estimated at 2.2 × 1021 and 2.1 × 1021 cells, respectively. Overall 33–68% of these microorganisms could be traced to a marine origin, being transported thousands of kilometres before re-entering the ocean. Moreover, our results show a substantial load of terrestrial microbes transported over the oceans, with abundances declining exponentially with distance from land and indicate that islands may act as stepping stones facilitating the transoceanic transport of terrestrial microbes. The extent to which the ocean acts as a sink and source of airborne particles to the atmosphere is unresolved. Here, the authors report high microbial loads over the tropical Atlantic, Pacific and Indian oceans and propose islands as stepping stones for the transoceanic transport of terrestrial microbes..
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Affiliation(s)
- Eva Mayol
- Department of Global Change Research, Mediterranean Institute for Advanced Studies (IMEDEA), Spanish Council for Scientific Research - University of the Balearic Islands (CSIC-UIB), Esporles, Mallorca, Spain. .,Institute of Littoral, Environment and Societies (LIENSs), National Centre for Scientific Research (CNRS) - University of La Rochelle, La Rochelle, France.
| | - Jesús M Arrieta
- Department of Global Change Research, Mediterranean Institute for Advanced Studies (IMEDEA), Spanish Council for Scientific Research - University of the Balearic Islands (CSIC-UIB), Esporles, Mallorca, Spain.,King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal, 23955-6900, Saudi Arabia.,Spanish Institute of Oceanography (IEO), Oceanographic Center of The Canary Islands, Santa Cruz de Tenerife, 38180, Spain
| | - Maria A Jiménez
- Department of Global Change Research, Mediterranean Institute for Advanced Studies (IMEDEA), Spanish Council for Scientific Research - University of the Balearic Islands (CSIC-UIB), Esporles, Mallorca, Spain.,Department of Physics, University of the Balearic Islands (UIB), Palma de Mallorca, Spain
| | - Adrián Martínez-Asensio
- Institute of Littoral, Environment and Societies (LIENSs), National Centre for Scientific Research (CNRS) - University of La Rochelle, La Rochelle, France.,Department of Physics, University of the Balearic Islands (UIB), Palma de Mallorca, Spain
| | - Neus Garcias-Bonet
- Department of Global Change Research, Mediterranean Institute for Advanced Studies (IMEDEA), Spanish Council for Scientific Research - University of the Balearic Islands (CSIC-UIB), Esporles, Mallorca, Spain.,King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal, 23955-6900, Saudi Arabia
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research - Spanish Council for Scientific Research (IDAEA-CSIC), Barcelona, Catalonia, Spain
| | - Belén González-Gaya
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research - Spanish Council for Scientific Research (IDAEA-CSIC), Barcelona, Catalonia, Spain.,Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry - Spanish Council for Scientific Research (IQOG-CSIC), Madrid, Spain
| | - Sarah-J Royer
- Institute of Marine Sciences - Spanish Council for Scientific Research (ICM-CSIC), Barcelona, Catalonia, Spain.,Daniel K. Inouye Center for Microbial Oceanography, Research and Education, University of Hawaii at Manoa, Honolulu, USA
| | - Verónica M Benítez-Barrios
- Spanish Institute of Oceanography (IEO), Oceanographic Center of The Canary Islands, Santa Cruz de Tenerife, 38180, Spain.,OCEOMIC, Marine Bio and Technology S.L., Fuerteventura Technology Park, Puerto del Rosario, E35600, Spain
| | - Eugenio Fraile-Nuez
- Spanish Institute of Oceanography (IEO), Oceanographic Center of The Canary Islands, Santa Cruz de Tenerife, 38180, Spain
| | - Carlos M Duarte
- Department of Global Change Research, Mediterranean Institute for Advanced Studies (IMEDEA), Spanish Council for Scientific Research - University of the Balearic Islands (CSIC-UIB), Esporles, Mallorca, Spain.,King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal, 23955-6900, Saudi Arabia
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31
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Casal P, Zhang Y, Martin JW, Pizarro M, Jiménez B, Dachs J. Role of Snow Deposition of Perfluoroalkylated Substances at Coastal Livingston Island (Maritime Antarctica). Environ Sci Technol 2017; 51:8460-8470. [PMID: 28665121 DOI: 10.1021/acs.est.7b02521] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Perfluoroalkyl substances (PFAS) are ubiquitous in the environment, including remote polar regions. To evaluate the role of snow deposition as an input of PFAS to Maritime Antarctica, fresh snow deposition, surface snow, streams from melted snow, coastal seawater, and plankton samples were collected over a three-month period (December 2014-February 2015) at Livingston Island. Local sources of PFASs were significant for perfluoroalkyl sulfonates (PFSAs) and C7-14 perfluoroalkyl carboxylates (PFCAs) in snow but limited to the transited areas of the research station. The concentrations of 14 ionizable PFAS (∑PFAS) in freshly deposited snow (760-3600 pg L-1) were 1 order of magnitude higher than those in background surface snow (82-430 pg L-1). ∑PFAS ranged from 94 to 420 pg L-1 in seawater and from 3.1 to 16 ng gdw-1 in plankton. Ratios of individual PFAS concentrations in freshly deposited snow relative to surface snow (CSD/CSnow), snowmelt (CSD/CSM), and seawater (CSD/CSW) were close to 1 (from 0.44 to 1.4) for all perfluorooctanesulfonate (PFOS) isomers, suggesting that snowfall does not contribute significantly to PFOS in seawater. Conversely, these ratios for PFCAs ranged from 1 to 33 and were positively correlated with the number of carbons in the PFCA alkylated chain. These trends suggest that snow deposition, scavenging sea-salt aerosol bound PFAS, plays a role as a significant input of PFCAs to the Maritime Antarctica.
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Affiliation(s)
- Paulo Casal
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC) , Barcelona, Catalonia 08034, Spain
| | - Yifeng Zhang
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta , Edmonton, Alberta T6G 2G3, Canada
| | - Jonathan W Martin
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta , Edmonton, Alberta T6G 2G3, Canada
| | - Mariana Pizarro
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC) , Barcelona, Catalonia 08034, Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, Spanish National Research Council (IQOG-CSIC) , Madrid 28006, Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC) , Barcelona, Catalonia 08034, Spain
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32
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Vila-Costa M, Gioia R, Aceña J, Pérez S, Casamayor EO, Dachs J. Degradation of sulfonamides as a microbial resistance mechanism. Water Res 2017; 115:309-317. [PMID: 28288310 DOI: 10.1016/j.watres.2017.03.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/02/2017] [Accepted: 03/04/2017] [Indexed: 05/03/2023]
Abstract
Two of the main mechanisms of bacterial resistance to sulfonamides in aquatic systems, spread of antibiotic resistance genes (ARG) among the microbial community and in-situ bacterial sulfonamide degradation, were studied in mesocosms experiments using water and cobble biofilms from upstream (pristine waters) and downstream (polluted waters) from the Llobregat river, NE Iberian Peninsula. Mesocosms were prepared at two different concentrations (5000 ng/L and 1000 ng/L) of sulfonamides antibiotics (sulfamethazine and sulfamethoxazole). Concentrations of ARG, nutrients, sulfonamides and their degradation products were measured during the time course of the experiments. Sulfonamides were efficiently degraded by the biofilms during the first four weeks of the experiment. The abundance of ARG in biofilms sharply decreased after addition of high concentrations of sulfonamides, but this was not observed in the mesocosms treated with low concentrations of sulfonamides. Sulfonamide degradation was faster in polluted waters and at high concentrations of sulfonamide (and lower ARG abundances), suggesting that both degradation and ARG are two complementary resistance strategies employed by the microbial community. This study shows that microbial degradation of antibiotics is an efficient resistance mechanism coupled with the presence of ARG, and suggests that in situ degradation prevails at high concentrations of antibiotics whereas physiological adaptation by ARG spread would be more important under relatively lower concentrations of antibiotics.
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Affiliation(s)
- Maria Vila-Costa
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-24, Barcelona 08034, Catalunya, Spain; Integrative Freshwater Ecology Group, Centre for Advanced Studies of Blanes, CEAB-CSIC, Accés Cala St. Francesc 14, E-17300 Blanes, Spain.
| | - Rosalinda Gioia
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-24, Barcelona 08034, Catalunya, Spain.
| | - Jaume Aceña
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-24, Barcelona 08034, Catalunya, Spain
| | - Sandra Pérez
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-24, Barcelona 08034, Catalunya, Spain
| | - Emilio O Casamayor
- Integrative Freshwater Ecology Group, Centre for Advanced Studies of Blanes, CEAB-CSIC, Accés Cala St. Francesc 14, E-17300 Blanes, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-24, Barcelona 08034, Catalunya, Spain
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33
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Casal P, González-Gaya B, Zhang Y, Reardon AJF, Martin JW, Jiménez B, Dachs J. Accumulation of Perfluoroalkylated Substances in Oceanic Plankton. Environ Sci Technol 2017; 51:2766-2775. [PMID: 28192988 DOI: 10.1021/acs.est.6b05821] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The bioaccumulation of perfluoroalkylated substances (PFASs) in plankton has previously been evaluated only in freshwater and regional seas, but not for the large oligotrophic global oceans. Plankton samples from the tropical and subtropical Pacific, Atlantic and Indian Oceans were collected during the Malaspina 2010 circumnavigation expedition, and analyzed for 14 ionizable PFASs, including perfluorooctanoate (PFOA), perfluorooctanesulfonate (PFOS) and their respective linear and branched isomers. PFOA and PFOS concentrations in plankton ranged from 0.1 to 43 ng gdw-1 and from 0.5 to 6.7 ng gdw-1, respectively. The relative abundance of branched PFOA in the northern hemisphere was correlated with distance to North America, consistent with the historical production and coherent with previously reported patterns in seawater. The plankton samples showing the highest PFOS concentrations also presented the largest relative abundances of branched PFOS, suggesting a selective cycling/fractionation of branched PFOS in the surface ocean mediated by plankton. Bioaccumulation factors (BAFs) for plankton were calculated for six PFASs, including short chain PFASs. PFASs Log BAFs (wet weight) ranged from 2.6 ± 0.8 for perfluorohexanesulfonic acid (PFHxS), to 4.4 ± 0.6 for perfluoroheptanoic acid (PFHpA). The vertical transport of PFASs due to the settling of organic matter bound PFAS (biological pump) was estimated from an organic matter settling fluxes climatology and the PFAS concentrations in plankton. The global average sinking fluxes were 0.8 ± 1.3 ng m-2d-1 for PFOA, and 1.1 ± 2.1 ng m-2d-1 for PFOS. The residence times of PFAS in the surface ocean, assuming the biological pump as the unique sink, showed a wide range of variability, from few years to millennia, depending on the sampling site and individual compound. Further process-based studies are needed to constrain the oceanic sink of PFAS.
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Affiliation(s)
- Paulo Casal
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain
| | - Belén González-Gaya
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC) , Juan de la Cierva 3, 28006 Madrid, Spain
| | - Yifeng Zhang
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta , Edmonton, Alberta Canada
| | - Anthony J F Reardon
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta , Edmonton, Alberta Canada
| | - Jonathan W Martin
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta , Edmonton, Alberta Canada
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC) , Juan de la Cierva 3, 28006 Madrid, Spain
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research, Spanish National Research Council (IDAEA-CSIC) , Jordi Girona 18-26, 08034 Barcelona, Catalonia, Spain
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Castro-Jiménez J, González-Gaya B, Pizarro M, Casal P, Pizarro-Álvarez C, Dachs J. Organophosphate Ester Flame Retardants and Plasticizers in the Global Oceanic Atmosphere. Environ Sci Technol 2016; 50:12831-12839. [PMID: 27775328 DOI: 10.1021/acs.est.6b04344] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Organophosphate esters (OPEs) are widely used as flame retardants and plasticizers and have been detected ubiquitously in the remote atmosphere. Fourteen OPEs were analyzed in 115 aerosol phase samples collected from the tropical and subtropical Atlantic, Pacific, and Indian Oceans during the MALASPINA circumnavigation campaign. OPEs were detected in all samples with concentrations ranging from 360 to 4400 pg m-3 for the sum of compounds. No clear concentration trends were found between the Northern and Southern hemispheres. The pattern was generally dominated by tris(1-chloro-2-propyl) phosphate (TCPP), although tri-n-butyl phosphate (TnBP) had a predominant role in samples close to continents and in those influenced by air masses originating in continents. The dry deposition fluxes of aerosol phase ∑14OPE ranged from 4 to 140 ng m-2 d-1. An estimation of the OPE gas phase concentration and gross absorption fluxes by using three different sets of physical chemical properties suggested that the atmosphere-ocean diffusive exchange of OPEs could be 2-3 orders of magnitude larger than dry deposition. The associated organic phosphorus inputs coming from diffusive OPE fluxes were estimated to potentially trigger up to 1.0% of the reported primary production in the most oligotrophic oceanic regions. However, the uncertainty associated with these calculations is high and mostly driven by the uncertainty of the physical chemical properties of OPEs. Further constraints of the physical chemical properties and fluxes of OPEs are urgently needed, in order to estimate their environmental fate and relevance as a diffusive source of new organic phosphorus to the ocean.
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Affiliation(s)
- Javier Castro-Jiménez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Spain
- Aix Marseille University, CNRS/INSU, University of Toulon, IRD, Mediterranean Institute of Oceanography (MIO) UM 110 , 13288, Marseille, France
| | - Belén González-Gaya
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Spain
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (IQOG-CSIC) , Juan de la Cierva 3, Madrid, Spain
| | - Mariana Pizarro
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Paulo Casal
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Cristina Pizarro-Álvarez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Spain
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Echeveste P, Galbán-Malagón C, Dachs J, Berrojalbiz N, Agustí S. Toxicity of natural mixtures of organic pollutants in temperate and polar marine phytoplankton. Sci Total Environ 2016; 571:34-41. [PMID: 27470667 DOI: 10.1016/j.scitotenv.2016.07.111] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 07/15/2016] [Accepted: 07/15/2016] [Indexed: 06/06/2023]
Abstract
Semivolatile and persistent organic pollutants (POPs) undergo atmospheric transport before being deposited to the oceans, where they partition to phytoplankton organic matter. The goal of this study was to determine the toxicity of naturally occurring complex mixtures of organic pollutants to temperate and polar phytoplankton communities from the Mediterranean Sea, the North East (NE) Atlantic, and Southern Oceans. The cell abundance of the different phytoplankton groups, chlorophyll a concentrations, viability of the cells, and growth and decay constants were monitored in response to addition of a range of concentrations of mixtures of organic pollutants obtained from seawater extracts. Almost all of the phytoplankton groups were significantly affected by the complex mixtures of non-polar and polar organic pollutants, with toxicity being greater for these mixtures than for single POPs or simple POP mixtures. Cocktails' toxicity arose at concentrations as low as tenfold the field oceanic levels, probably due to a higher chemical activity of the mixture than of simple POPs mixtures. Overall, smaller cells were the most affected, although Mediterranean picophytoplankton was significantly more tolerant to non-polar POPs than picophytoplankton from the Atlantic Ocean or the Bellingshausen Sea microphytoplankton.
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Affiliation(s)
- Pedro Echeveste
- Department of Global Change Research, Institut Mediterrani d'Estudis Avançats (CSIC-UIB), Mallorca, Illes Balears, Spain.
| | - Cristóbal Galbán-Malagón
- Departamento de Ecología y Biodiversidad, Universidad Nacional Andrés Bello, Santiago, Chile; Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Naiara Berrojalbiz
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalunya, Spain; Norges Geotekniske Institutt, Oslo, Norway
| | - Susana Agustí
- Department of Global Change Research, Institut Mediterrani d'Estudis Avançats (CSIC-UIB), Mallorca, Illes Balears, Spain; Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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36
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Cabrerizo A, Tejedo P, Dachs J, Benayas J. Anthropogenic and biogenic hydrocarbons in soils and vegetation from the South Shetland Islands (Antarctica). Sci Total Environ 2016; 569-570:1500-1509. [PMID: 27450242 DOI: 10.1016/j.scitotenv.2016.06.240] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 06/28/2016] [Accepted: 06/29/2016] [Indexed: 05/15/2023]
Abstract
Two Antarctic expeditions (in 2009 and 2011) were carried out to assess the local and remote anthropogenic sources of aliphatic and aromatic hydrocarbons, as well as potential biogenic hydrocarbons. Polycyclic aromatic hydrocarbons (PAHs), n-alkanes, biomarkers such as phytane (Ph) and pristane (Pr), and the aliphatic unresolved complex mixture (UCM), were analysed in soil and vegetation samples collected at Deception, Livingston, Barrientos and Penguin Islands (South Shetland Islands, Antarctica). Overall, the patterns of n-alkanes in lichens, mosses and grass were dominated by odd-over-even carbon number alkanes. Mosses and vascular plants showed high abundances of n-C21 to n-C35, while lichens also showed high abundances of n-C17 and n-C19. The lipid content was an important factor controlling the concentrations of n-alkanes in Antarctic vegetation (r(2)=0.28-0.53, p-level<0.05). n-C12 to n-C35 n-alkanes were analysed in soils with a predominance of odd C number n-alkanes (n-C25, n-C27, n-C29, and n-C31), especially in the background soils not influenced by anthropogenic sources. The large values for the carbon predominance index (CPI) and the correlations between odd alkanes and some PAHs suggest the potential biogenic sources of these hydrocarbons in Antarctica. Unresolved complex mixture and CPI values ~1 detected at soils collected at intertidal areas and within the perimeter of Juan Carlos research station, further supported the evidence that even a small settlement (20 persons during the austral summer) can affect the loading of aliphatic and aromatic hydrocarbons in nearby soils. Nevertheless, the assessment of Pr/n-C17 and Ph/n-C18 ratios showed that hydrocarbon degradation is occurring in these soils.
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Affiliation(s)
- Ana Cabrerizo
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona 08034, Catalonia, Spain.
| | - Pablo Tejedo
- Departmento de Ecología, Universidad Autónoma de Madrid, C/ Darwin 2, 28049 Madrid, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona 08034, Catalonia, Spain
| | - Javier Benayas
- Departmento de Ecología, Universidad Autónoma de Madrid, C/ Darwin 2, 28049 Madrid, Spain
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Bigot M, Muir DCG, Hawker DW, Cropp R, Dachs J, Teixeira CF, Bengtson Nash S. Air-Seawater Exchange of Organochlorine Pesticides in the Southern Ocean between Australia and Antarctica. Environ Sci Technol 2016; 50:8001-8009. [PMID: 27348023 DOI: 10.1021/acs.est.6b01970] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study contributes new data on the spatial variability of persistent organic pollutants in the Indian-Pacific sector of the Southern Ocean and represents the first empirical data obtained from this region in 25 years. Paired high-volume atmospheric and seawater samples were collected along a transect between Australia and Antarctica to investigate the latitudinal dependence of the occurrence and distribution of legacy organochlorine pesticides (OCPs) and the current use pesticide chlorpyrifos in the Southern Ocean. Dissolved ΣHCH and dieldrin concentrations decreased linearly with increasing latitude from 7.7 to 3.0 and from 1.0 to 0.6 pg·L(-1), respectively. There was no consistent trend observed in the latitudinal profile of atmospheric samples; however, some compounds (such as dieldrin) showed reduced concentrations from 7.5-3.4 to 2.7-0.65 pg·m(-3) at the highest latitudes south of the Polar Front. Chlorpyrifos was found in samples from this area for the first time. Estimated air-seawater fugacity ratios and fluxes indicate a current net deposition between -3600 and -900, -6400 and -400, and -1400 and -200 (pg·m(-2)·d(-1)) for γ-HCH, dieldrin, and chlorpyrifos, respectively. These findings suggest that, under current climatic conditions, the Southern Ocean reservoir in the Indian-Pacific sector serves as an environmental sink rather than a source of OCPs to the atmosphere.
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Affiliation(s)
| | - Derek C G Muir
- Aquatic Contaminants Research Division, Environment Canada , 867 Lakeshore Road, Burlington, Ontario L7R 4A6, Canada
| | | | | | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC , Jordi Girona 18-24, Barcelona, 08034 Catalunya, Spain
| | - Camilla F Teixeira
- Aquatic Contaminants Research Division, Environment Canada , 867 Lakeshore Road, Burlington, Ontario L7R 4A6, Canada
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Mesquita SR, Dachs J, van Drooge BL, Castro-Jiménez J, Navarro-Martín L, Barata C, Vieira N, Guimarães L, Piña B. Toxicity assessment of atmospheric particulate matter in the Mediterranean and Black Seas open waters. Sci Total Environ 2016; 545-546:163-170. [PMID: 26745302 DOI: 10.1016/j.scitotenv.2015.12.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 12/12/2015] [Accepted: 12/12/2015] [Indexed: 06/05/2023]
Abstract
Atmospheric deposition of particulate matter (PM) is recognized as a relevant input vector for toxic compounds, such as polycyclic aromatic hydrocarbons (PAHs), into the marine environment. In this work we aimed to analyse the biological activity and potential adverse effects of PM constituents to aquatic organisms. Organic extracts of atmospheric PM samples from different sub-basins of the Mediterranean and Black Seas were screened using different toxicological tests. A yeast-based assay (AhR-RYA) revealed that dioxin-like activity correlated with the concentration of total PAHs in the PM samples, as well as with their predicted toxic equivalent values (TEQs). Although the zebrafish embryotoxicity test (the ZET assay) showed no major phenotypical adverse effects, up-regulation of mRNA expression of cyp1a, fos and development-related genes (previously described as related to PM toxicity) was observed in exposed embryos when compared to controls. Results showed that mRNA patterns of the studied genes followed a similar geographic distribution to both PAH content and dioxin-like activity of the corresponding extracts. The analysis also showed a distinct geographical pattern of activation of pancreatic markers previously related to airborne pollution, probably indicating a different subset of uncharacterized particle-bound toxicants. We propose the combination of the bioassays tested in the present study to be applied to future research with autochthonous species to assess exposure and potential toxic effects of ambient PM. The present study emphasizes the need for more in-depth studies into the toxic burden of atmospheric PM on aquatic ecosystems, in order to improve future regulatory guidelines.
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Affiliation(s)
- Sofia R Mesquita
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain; Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
| | - Jordi Dachs
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Barend L van Drooge
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Javier Castro-Jiménez
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain; Aix-Marseille University, CNRS/INSU, University of Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Laia Navarro-Martín
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Carlos Barata
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Natividade Vieira
- Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Laura Guimarães
- Interdisciplinary Centre of Marine and Environmental Research, Rua dos Bragas 289, 4050-123 Porto, Portugal
| | - Benjamin Piña
- Institute of Environmental Assessment and Water Research, Carrer Jordi Girona 18-26, 08034 Barcelona, Spain
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Arrieta JM, Duarte CM, Sala MM, Dachs J. Out of Thin Air: Microbial Utilization of Atmospheric Gaseous Organics in the Surface Ocean. Front Microbiol 2016; 6:1566. [PMID: 26834717 PMCID: PMC4718972 DOI: 10.3389/fmicb.2015.01566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 12/27/2015] [Indexed: 11/13/2022] Open
Abstract
Volatile and semi-volatile gas-phase organic carbon (GOC) is a largely neglected component of the global carbon cycle, with poorly resolved pools and fluxes of natural and anthropogenic GOC in the biosphere. Substantial amounts of atmospheric GOC are exchanged with the surface ocean, and subsequent utilization of specific GOC compounds by surface ocean microbial communities has been demonstrated. Yet, the final fate of the bulk of the atmospheric GOC entering the surface ocean is unknown. Our data show experimental evidence of efficient use of atmospheric GOC by marine prokaryotes at different locations in the NE Subtropical Atlantic, the Arctic Ocean and the Mediterranean Sea. We estimate that between 2 and 27% of the prokaryotic carbon demand was supported by GOC with a major fraction of GOC inputs being consumed within the mixed layer. The role of the atmosphere as a key vector of organic carbon subsidizing marine microbial metabolism is a novel link yet to be incorporated into the microbial ecology of the surface ocean as well as into the global carbon budget.
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Affiliation(s)
- Jesús M Arrieta
- Division of Biological and Environmental Science and Engineering, Red Sea Research Center, King Abdullah University of Science and TechnologyThuwal, Saudi Arabia; Department of Global Change Research, Institut Mediterrani d'Estudis Avançats, Consejo Superior de Investigaciones Científicas/Universitat de les Illes BalearsEsporles, Spain
| | - Carlos M Duarte
- Division of Biological and Environmental Science and Engineering, Red Sea Research Center, King Abdullah University of Science and TechnologyThuwal, Saudi Arabia; Department of Global Change Research, Institut Mediterrani d'Estudis Avançats, Consejo Superior de Investigaciones Científicas/Universitat de les Illes BalearsEsporles, Spain
| | - M Montserrat Sala
- Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas Barcelona, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute for Environmental Assessment and Water Research, Consejo Superior de Investigaciones Científicas Barcelona, Spain
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Morales L, Dachs J, Fernández-Pinos MC, Berrojalbiz N, Mompean C, González-Gaya B, Jiménez B, Bode A, Ábalos M, Abad E. Oceanic Sink and Biogeochemical Controls on the Accumulation of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Plankton. Environ Sci Technol 2015; 49:13853-13861. [PMID: 26115052 DOI: 10.1021/acs.est.5b01360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dl-PCBs) were measured in plankton samples from the Atlantic, Pacific, and Indian Oceans collected during the Malaspina circumnavigation cruise. The concentrations of PCDD/Fs and dl-PCBs in plankton averaged 14 and 240 pg gdw(-1), respectively, but concentrations were highly variable. The global distribution of PCDD/Fs and dl-PCBs was not driven by proximity to continents but significantly correlated with plankton biomass, with higher plankton phase PCDD/F and dl-PCB concentrations at lower biomass. These trends are consistent with the interactions between atmospheric deposition, biomass dilution, and settling fluxes of organic matter in the water column (biological pump), as key processes driving POPs plankton phase concentrations in the global oceans. The application of a model of the air-water-plankton diffusive exchange reproduces in part the influence of biomass on plankton phase concentrations and suggests future modeling priorities. The estimated oceanic sink (Atlantic, Pacific, and Indian Oceans) due to settling fluxes of organic matter bound PCDD/Fs and dl-PCBs is of 400 and 10,500 kg y(-1), respectively. The atmospheric inputs due to gross diffusive absorption and dry deposition are nearly 3 and 10 times larger for PCDD/Fs and dl-PCBs, respectively, than the oceanic sink. These observations suggest that the coupling of atmospheric deposition with water column cycling supports and drives the accumulation of dl-PCBs and PCDD/Fs in plankton from the global oligotrophic oceans.
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Affiliation(s)
- Laura Morales
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - María-Carmen Fernández-Pinos
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Naiara Berrojalbiz
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Carmen Mompean
- A Coruña Oceanographic Center, Spanish Institute of Oceanography, IEO , A Coruña, Galicia, Spain
| | - Belén González-Gaya
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, IQOG-CSIC , Madrid, Spain
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, IQOG-CSIC , Madrid, Spain
| | - Antonio Bode
- A Coruña Oceanographic Center, Spanish Institute of Oceanography, IEO , A Coruña, Galicia, Spain
| | - Manuela Ábalos
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
| | - Esteban Abad
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research , IDAEA-CSIC, Barcelona, Catalunya, Spain
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Fernández-Pinos MC, Casado M, Caballero G, Zinser ER, Dachs J, Piña B. Clade-Specific Quantitative Analysis of Photosynthetic Gene Expression in Prochlorococcus. PLoS One 2015; 10:e0133207. [PMID: 26244890 PMCID: PMC4526520 DOI: 10.1371/journal.pone.0133207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 06/24/2015] [Indexed: 01/04/2023] Open
Abstract
Newly designed primers targeting rbcL (CO2 fixation), psbA (photosystem II) and rnpB (reference) genes were used in qRT-PCR assays to assess the photosynthetic capability of natural communities of Prochlorococcus, the most abundant photosynthetic organism on Earth and a major contributor to primary production in oligotrophic oceans. After optimizing sample collection methodology, we analyzed a total of 62 stations from the Malaspina 2010 circumnavigation (including Atlantic, Pacific and Indian Oceans) at three different depths. Sequence and quantitative analyses of the corresponding amplicons showed the presence of high-light (HL) and low-light (LL) Prochlorococcus clades in essentially all 182 samples, with a largely uniform stratification of LL and HL sequences. Synechococcus cross-amplifications were detected by the taxon-specific melting temperatures of the amplicons. Laboratory exposure of Prochlorococcus MED4 (HL) and MIT9313 (LL) strains to organic pollutants (PAHs and organochlorine compounds) showed a decrease of rbcL transcript abundances, and of the rbcL to psbA ratios for both strains. We propose this technique as a convenient assay to evaluate effects of environmental stressors, including pollution, on the oceanic Prochlorococcus photosynthetic function.
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Affiliation(s)
| | - Marta Casado
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain
| | - Gemma Caballero
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain
| | - Erik R. Zinser
- Department of Microbiology, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Jordi Dachs
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain
| | - Benjamin Piña
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Catalonia, Spain
- * E-mail:
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Sanchís J, Cabrerizo A, Galbán-Malagón C, Barceló D, Farré M, Dachs J. Response to comments on "Unexpected occurrence of volatile dimethylsiloxanes in Antarctic soils, vegetation, phytoplankton and krill". Environ Sci Technol 2015; 49:7510-7512. [PMID: 26000988 DOI: 10.1021/acs.est.5b02184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Josep Sanchís
- †Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Catalonia, Spain
| | - Ana Cabrerizo
- †Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Catalonia, Spain
| | - Cristóbal Galbán-Malagón
- †Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Catalonia, Spain
| | - Damià Barceló
- †Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Catalonia, Spain
- ‡Catalan Institute for Water Research (ICRA), H2O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003 Girona, Catalonia, Spain
| | - Marinella Farré
- †Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Catalonia, Spain
| | - Jordi Dachs
- †Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Catalonia, Spain
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Sanchís J, Cabrerizo A, Galbán-Malagón C, Barceló D, Farré M, Dachs J. Unexpected occurrence of volatile dimethylsiloxanes in Antarctic soils, vegetation, phytoplankton, and krill. Environ Sci Technol 2015; 49:4415-24. [PMID: 25658133 DOI: 10.1021/es503697t] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Volatile methyl siloxanes (VMS) are high-production synthetic compounds, ubiquitously found in the environment of source regions. Here, we show for the first time the occurrence of VMS in soils, vegetation, phytoplankton, and krill samples from the Antarctic Peninsula region, which questions previous claims that these compounds are "flyers" and do not significantly reach remote ecosystems. Cyclic VMS are the predominant compounds, with concentrations ranging from the limits of detection to 110 ng/g in soils. Concentrations of cyclic VMS in phytoplankton are negatively correlated with sea surface salinity, indicating a source from ice and snow melting and consistent with snow depositional inputs. After the summer snow melting, VMS accumulate in the Southern Ocean and Antarctic biota. Therefore, once introduced into the marine environment, VMS are eventually trapped by the biological pump and, thus, behave as "single hoppers". Conversely, VMS in soils and vegetation behave as "multiple hoppers" due to their high volatility.
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Affiliation(s)
- Josep Sanchís
- †Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/JordiGirona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - Ana Cabrerizo
- †Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/JordiGirona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - Cristóbal Galbán-Malagón
- †Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/JordiGirona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - Damià Barceló
- †Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/JordiGirona, 18-26, 08034, Barcelona, Catalonia, Spain
- ∥Catalan Institute for Water Research (ICRA), H2O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003 Girona, Catalonia, Spain
| | - Marinella Farré
- †Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/JordiGirona, 18-26, 08034, Barcelona, Catalonia, Spain
| | - Jordi Dachs
- †Water and Soil Quality Research Group, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/JordiGirona, 18-26, 08034, Barcelona, Catalonia, Spain
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Galarneau E, Arey J, Atkinson R, Dachs J, Eisenreich S, Harner T, Hites RA, Lammel G, Lohmann R, Mackay D, Odabasi M, Pankow JF, Scheringer M, Swackhamer D, Tasdemir Y, Wania F. Celebrating Bidleman's 1988 "atmospheric processes". Environ Sci Technol 2015; 49:1235-1236. [PMID: 25584884 DOI: 10.1021/es5061403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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González-Gaya B, Dachs J, Roscales JL, Caballero G, Jiménez B. Perfluoroalkylated substances in the global tropical and subtropical surface oceans. Environ Sci Technol 2014; 48:13076-84. [PMID: 25325411 DOI: 10.1021/es503490z] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, perfluoroalkylated substances (PFASs) were analyzed in 92 surface seawater samples taken during the Malaspina 2010 expedition which covered all the tropical and subtropical Atlantic, Pacific and Indian oceans. Nine ionic PFASs including C6-C10 perfluoroalkyl carboxylic acids (PFCAs), C4 and C6-C8 perfluoroalkyl sulfonic acids (PFSAs) and two neutral precursors perfluoroalkyl sulfonamides (PFASAs), were identified and quantified. The Atlantic Ocean presented the broader range in concentrations of total PFASs (131-10900 pg/L, median 645 pg/L, n = 45) compared to the other oceanic basins, probably due to a better spatial coverage. Total concentrations in the Pacific ranged from 344 to 2500 pg/L (median = 527 pg/L, n = 27) and in the Indian Ocean from 176 to 1976 pg/L (median = 329, n = 18). Perfluorooctanesulfonic acid (PFOS) was the most abundant compound, accounting for 33% of the total PFASs globally, followed by perfluorodecanoic acid (PFDA, 22%) and perfluorohexanoic acid (PFHxA, 12%), being the rest of the individual congeners under 10% of total PFASs, even for perfluorooctane carboxylic acid (PFOA, 6%). PFASAs accounted for less than 1% of the total PFASs concentration. This study reports the ubiquitous occurrence of PFCAs, PFSAs, and PFASAs in the global ocean, being the first attempt, to our knowledge, to show a comprehensive assessment in surface water samples collected in a single oceanic expedition covering tropical and subtropical oceans. The potential factors affecting their distribution patterns were assessed including the distance to coastal regions, oceanic subtropical gyres, currents and biogeochemical processes. Field evidence of biogeochemical controls on the occurrence of PFASs was tentatively assessed considering environmental variables (solar radiation, temperature, chlorophyll a concentrations among others), and these showed significant correlations with some PFASs, but explaining small to moderate percentages of variability. This suggests that a number of physical and biogeochemical processes collectively drive the oceanic occurrence and fate of PFASs in a complex manner.
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Affiliation(s)
- Belén González-Gaya
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, Spanish National Research Council (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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Morales L, Dachs J, González-Gaya B, Hernán G, Abalos M, Abad E. Background concentrations of polychlorinated dibenzo-p-dioxins, dibenzofurans, and biphenyls in the global oceanic atmosphere. Environ Sci Technol 2014; 48:10198-10207. [PMID: 25083749 DOI: 10.1021/es5023619] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The remote oceans are among the most pristine environments in the world, away from sources of anthropogenic persistent organic pollutants (POP), but nevertheless recipients of atmospheric deposition of POPs that have undergone long-range atmospheric transport (LRAT). In this work, the background occurrence of gas and aerosol phase polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin like polychlorinated biphenyls (dl-PCB) is evaluated for the first time in the atmosphere of the tropical and subtropical Atlantic, Pacific, and Indian oceans. Thirty-nine air samples were collected during the eight-month Malaspina circumnavigation cruise onboard the R/V Hespérides. The background levels of dioxins and dl-PCBs remained very low and in many cases very close to or below the limit of detection. Expectedly, the levels of PCBs were higher than dioxins, PCB#118 being the most abundant compound. In the particular case of dioxins, octachlorodibenzo-p-dioxin (OCDD) was the most abundant PCDD/F congener. Distribution of dl-PCB is dominated by the gas phase, while for PCDD/F the aerosol phase concentrations were higher, particularly for the more hydrophobic congeners. The Atlantic Ocean presented on average the highest PCDD/F and dl-PCB concentrations, being lower in the southern hemisphere. The assessment of air mass back trajectories show a clear influence of continental source regions, and lower concentrations when the air mass has an oceanic origin. In addition, the samples affected by an oceanic air mass are characterized by a lower contribution of the less chlorinated dioxins in comparison with the furans, consistent with the reported higher reaction rate constants of dibenzo-p-dioxins with OH radicals than those of dibenzofurans. The total dry atmospheric deposition of aerosol-bound ∑PCDD/F and ∑dl-PCB to the global oceans was estimated to be 354 and 896 kg/year, respectively.
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Affiliation(s)
- Laura Morales
- Department of Environmental Chemistry, IDAEA-CSIC , Barcelona, Catalunya, Spain
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González-Gaya B, Zúñiga-Rival J, Ojeda MJ, Jiménez B, Dachs J. Field measurements of the atmospheric dry deposition fluxes and velocities of polycyclic aromatic hydrocarbons to the global oceans. Environ Sci Technol 2014; 48:5583-5592. [PMID: 24724834 DOI: 10.1021/es500846p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The atmospheric dry deposition fluxes of 16 polycyclic aromatic hydrocarbons (PAHs) have been measured, for the first time, in the tropical and subtropical Atlantic, Pacific, and Indian Oceans. Depositional fluxes for fine (0.7-2.7 μm) and coarse (>2.7 μm) aerosol fractions were simultaneously determined with the suspended aerosol phase concentrations, allowing the determination of PAH deposition velocities (vD). PAH dry deposition fluxes (FDD) bound to coarse aerosols were higher than those of fine aerosols for 83% of the measurements. Average FDD for total (fine + coarse) Σ16PAHs (sum of 16 individual PAHs) ranged from 8.33 ng m(-2)d(-1) to 52.38 ng m(-2)d(-1). Mean FDD for coarse aerosol's individual PAHs ranged between 0.13 ng m(-2)d(-1) (Perylene) and 1.96 ng m(-2)d(-1) (Methyl Pyrene), and for the fine aerosol fraction these ranged between 0.06 ng m(-2)d(-1) (Dimethyl Pyrene) and 1.25 ng m(-2)d(-1) (Methyl Chrysene). The estimated deposition velocities went from the highest mean vD for Methyl Chrysene (0.17-13.30 cm s(-1)), followed by Dibenzo(ah)Anthracene (0.29-1.38 cm s(-1)), and other high MW PAHs to minimum values of vD for Dimethyl Pyrene (<0.04 cm s(-1)) and Pyrene (<0.06 cm s(-1)). Dry depositional processes depend on the concentration of PAHs in the suspended aerosol, but also on physicochemical properties and environmental variables (vapor pressure, wind speed, and on the affinity of aerosols for depositing to the sea surface). Empirical parametrizations are proposed to predict the dry depositional velocities of semivolatile organic compounds to the global oceans.
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Affiliation(s)
- Belén González-Gaya
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC , Barcelona 08034, Catalunya Spain
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Castro-Jiménez J, Berrojalbiz N, Pizarro M, Dachs J. Organophosphate ester (OPE) flame retardants and plasticizers in the open Mediterranean and Black Seas atmosphere. Environ Sci Technol 2014; 48:3203-9. [PMID: 24564832 DOI: 10.1021/es405337g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The presence of organophosphate ester (OPE) flame retardants and plasticizers has been confirmed for the first time in the atmosphere over the Mediterranean and Black Seas. Atmospheric aerosol samples were collected during two West-East oceanographic cruises across the Mediterranean and in the southwest Black Sea. This comprehensive assessment of baseline concentrations of aerosol phase OPEs, spatial distribution, and related deposition fluxes reveals levels ranging from 0.4 to 6.0 ng m(-3) for the ∑14OPEs and a lack of significant differences among sub-basins. Levels measured across the Mediterranean Sea and in the Black Sea are in the upper range or higher than those from previous reports for the marine atmosphere, presumably due to proximity to sources. From 13 to 260 tons of OPEs are estimated to be annually loaded to the Mediterranean Sea open waters from the atmosphere. Tris-(1-chloro-2-propyl)phosphate (TCPP) was the most abundant compound over the atmosphere of all the Mediterranean and Black Sea sub-basins, and therefore the chemical reaching surface waters at a higher extent by dry deposition. The atmospheric deposition fluxes of phosphorus due to OPE deposition is a significant fraction of known atmospheric inputs of new organic phosphorus (P), suggesting the relevant role that anthropogenic organic pollutants could play in the P cycle.
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Affiliation(s)
- Javier Castro-Jiménez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC) , Jordi Girona, 18-26, 08034 Barcelona, Catalonia, Spain
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Castro-Jiménez J, Berrojalbiz N, Mejanelle L, Dachs J. Sources, Transport and Deposition of Atmospheric Organic Pollutants in the Mediterranean Sea. ACTA ACUST UNITED AC 2013. [DOI: 10.1021/bk-2013-1149.ch011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Affiliation(s)
- Javier Castro-Jiménez
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Spain
- Benthic Ecogeochemistry Laboratory, UMR 8222, National Center for Scientific Research (CNRS)-University Pierre et Marie Curie, France
| | - Naiara Berrojalbiz
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Spain
- Benthic Ecogeochemistry Laboratory, UMR 8222, National Center for Scientific Research (CNRS)-University Pierre et Marie Curie, France
| | - Laurance Mejanelle
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Spain
- Benthic Ecogeochemistry Laboratory, UMR 8222, National Center for Scientific Research (CNRS)-University Pierre et Marie Curie, France
| | - Jordi Dachs
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Spain
- Benthic Ecogeochemistry Laboratory, UMR 8222, National Center for Scientific Research (CNRS)-University Pierre et Marie Curie, France
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Lohmann R, Jurado E, Dijkstra HA, Dachs J. Vertical eddy diffusion as a key mechanism for removing perfluorooctanoic acid (PFOA) from the global surface oceans. Environ Pollut 2013; 179:88-94. [PMID: 23665619 DOI: 10.1016/j.envpol.2013.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/01/2013] [Accepted: 04/02/2013] [Indexed: 05/20/2023]
Abstract
Here we estimate the importance of vertical eddy diffusion in removing perfluorooctanoic acid (PFOA) from the surface Ocean and assess its importance as a global sink. Measured water column profiles of PFOA were reproduced by assuming that vertical eddy diffusion in a 3-layer ocean model is the sole cause for the transport of PFOA to depth. The global oceanic sink due to eddy diffusion for PFOA is high, with accumulated removal fluxes over the last 40 years of 660 t, with the Atlantic Ocean accounting for 70% of the global oceanic sink. The global oceans have removed 13% of all PFOA produced to a depth greater than 100 m via vertical eddy diffusion; an additional 4% has been removed via deep water formation. The top 100 m of the surface oceans store another 21% of all PFOA produced (∼1100 t).
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Affiliation(s)
- Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA.
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