Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol
To investigate the impact of marine aerosols on global climate change it is important to study their chemical composition and size distribution. Amino acids are a component of the organic nitrogen in aerosols and particles containing amino acids have been found to be efficient ice nuclei. The main a...
Published in: | Atmospheric Chemistry and Physics |
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Online Access: | http://hdl.handle.net/10278/3662559 https://doi.org/10.5194/acp-15-5457-2015 http://www.atmos-chem-phys.net/volumes_and_issues.html |
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ftuniveneziairis:oai:iris.unive.it:10278/3662559 2024-04-14T08:04:03+00:00 Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol BARBARO, ELENA Zangrando, R. VECCHIATO, MARCO PIAZZA, Rossano Cairns, W. R. L. CAPODAGLIO, Gabriele BARBANTE, Carlo GAMBARO, Andrea Barbaro, Elena Zangrando, R. Vecchiato, Marco Piazza, Rossano Cairns, W. R. L. Capodaglio, Gabriele Barbante, Carlo Gambaro, Andrea 2015 STAMPA http://hdl.handle.net/10278/3662559 https://doi.org/10.5194/acp-15-5457-2015 http://www.atmos-chem-phys.net/volumes_and_issues.html eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000355289200009 volume:15 issue:10 firstpage:5457 lastpage:5469 numberofpages:13 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/10278/3662559 doi:10.5194/acp-15-5457-2015 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930226733 http://www.atmos-chem-phys.net/volumes_and_issues.html info:eu-repo/semantics/openAccess SECONDARY ORGANIC AEROSOL FINE PARTICLES PM2.5 ATMOSPHERIC AEROSOLS FOG WATERS DOME-C CHEMICAL-COMPOSITION SEASONAL-VARIATION ARCTIC AEROSOLS Settore GEO/12 - Oceanografia e Fisica dell'Atmosfera Settore CHIM/01 - Chimica Analitica info:eu-repo/semantics/article 2015 ftuniveneziairis https://doi.org/10.5194/acp-15-5457-2015 2024-03-21T18:04:51Z To investigate the impact of marine aerosols on global climate change it is important to study their chemical composition and size distribution. Amino acids are a component of the organic nitrogen in aerosols and particles containing amino acids have been found to be efficient ice nuclei. The main aim of this study was to investigate the L- and D-free amino acid composition as possible tracers of primary biological production in Antarctic aerosols from three different areas: two continental bases, Mario Zucchelli Station (MZS) on the coast of the Ross Sea, Concordia Station at Dome C on the Antarctic Plateau, and the Southern Ocean near the Antarctic continent. Studying the size distribution of amino acids in aerosols allowed us to characterize this component of the water-soluble organic carbon (WSOC) in marine aerosols near their source and after long-range transport. The presence of only free L-amino acids in our samples is indicative of the prevalence of phytoplanktonic material. Sampling at these three points allowed us to study the reactivity of these compounds during long-range transport. The mean total amino acid concentration detected at MZS was 11 pmol m(-3), a higher percentage of amino acids were found in the fine fraction. The aerosol samples collected at Dome C had the lowest amino acid values (0.7 and 0.8 pmol m(-3)), and the coarse particles were found to have higher concentrations of amino acids compared to the coastal site. The amino acid composition in the aerosol collected at Dome C had also changed compared to the coastal site, suggesting that physical and chemical transformations had occurred during long range transport. During the sampling cruise on the R/V Italica on the Southern Ocean, high concentrations of amino acids were found in the total suspended particles, this we attribute to the presence of intact biological material (as microorganisms or plant material) in the sample. To investigate the impact of marine aerosols on global climate change it is important to study their chemical ... Article in Journal/Newspaper Antarc* Antarctic Arctic Climate change Ross Sea Southern Ocean Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Arctic Antarctic Southern Ocean The Antarctic Ross Sea Concordia Station ENVELOPE(123.333,123.333,-75.100,-75.100) Italica ENVELOPE(165.287,165.287,-74.330,-74.330) Mario Zucchelli ENVELOPE(164.123,164.123,-74.695,-74.695) Mario Zucchelli Station ENVELOPE(164.117,164.117,-74.700,-74.700) Atmospheric Chemistry and Physics 15 10 5457 5469 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
SECONDARY ORGANIC AEROSOL FINE PARTICLES PM2.5 ATMOSPHERIC AEROSOLS FOG WATERS DOME-C CHEMICAL-COMPOSITION SEASONAL-VARIATION ARCTIC AEROSOLS Settore GEO/12 - Oceanografia e Fisica dell'Atmosfera Settore CHIM/01 - Chimica Analitica |
spellingShingle |
SECONDARY ORGANIC AEROSOL FINE PARTICLES PM2.5 ATMOSPHERIC AEROSOLS FOG WATERS DOME-C CHEMICAL-COMPOSITION SEASONAL-VARIATION ARCTIC AEROSOLS Settore GEO/12 - Oceanografia e Fisica dell'Atmosfera Settore CHIM/01 - Chimica Analitica BARBARO, ELENA Zangrando, R. VECCHIATO, MARCO PIAZZA, Rossano Cairns, W. R. L. CAPODAGLIO, Gabriele BARBANTE, Carlo GAMBARO, Andrea Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol |
topic_facet |
SECONDARY ORGANIC AEROSOL FINE PARTICLES PM2.5 ATMOSPHERIC AEROSOLS FOG WATERS DOME-C CHEMICAL-COMPOSITION SEASONAL-VARIATION ARCTIC AEROSOLS Settore GEO/12 - Oceanografia e Fisica dell'Atmosfera Settore CHIM/01 - Chimica Analitica |
description |
To investigate the impact of marine aerosols on global climate change it is important to study their chemical composition and size distribution. Amino acids are a component of the organic nitrogen in aerosols and particles containing amino acids have been found to be efficient ice nuclei. The main aim of this study was to investigate the L- and D-free amino acid composition as possible tracers of primary biological production in Antarctic aerosols from three different areas: two continental bases, Mario Zucchelli Station (MZS) on the coast of the Ross Sea, Concordia Station at Dome C on the Antarctic Plateau, and the Southern Ocean near the Antarctic continent. Studying the size distribution of amino acids in aerosols allowed us to characterize this component of the water-soluble organic carbon (WSOC) in marine aerosols near their source and after long-range transport. The presence of only free L-amino acids in our samples is indicative of the prevalence of phytoplanktonic material. Sampling at these three points allowed us to study the reactivity of these compounds during long-range transport. The mean total amino acid concentration detected at MZS was 11 pmol m(-3), a higher percentage of amino acids were found in the fine fraction. The aerosol samples collected at Dome C had the lowest amino acid values (0.7 and 0.8 pmol m(-3)), and the coarse particles were found to have higher concentrations of amino acids compared to the coastal site. The amino acid composition in the aerosol collected at Dome C had also changed compared to the coastal site, suggesting that physical and chemical transformations had occurred during long range transport. During the sampling cruise on the R/V Italica on the Southern Ocean, high concentrations of amino acids were found in the total suspended particles, this we attribute to the presence of intact biological material (as microorganisms or plant material) in the sample. To investigate the impact of marine aerosols on global climate change it is important to study their chemical ... |
author2 |
Barbaro, Elena Zangrando, R. Vecchiato, Marco Piazza, Rossano Cairns, W. R. L. Capodaglio, Gabriele Barbante, Carlo Gambaro, Andrea |
format |
Article in Journal/Newspaper |
author |
BARBARO, ELENA Zangrando, R. VECCHIATO, MARCO PIAZZA, Rossano Cairns, W. R. L. CAPODAGLIO, Gabriele BARBANTE, Carlo GAMBARO, Andrea |
author_facet |
BARBARO, ELENA Zangrando, R. VECCHIATO, MARCO PIAZZA, Rossano Cairns, W. R. L. CAPODAGLIO, Gabriele BARBANTE, Carlo GAMBARO, Andrea |
author_sort |
BARBARO, ELENA |
title |
Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol |
title_short |
Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol |
title_full |
Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol |
title_fullStr |
Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol |
title_full_unstemmed |
Free amino acids in Antarctic aerosol: Potential markers for the evolution and fate of marine aerosol |
title_sort |
free amino acids in antarctic aerosol: potential markers for the evolution and fate of marine aerosol |
publishDate |
2015 |
url |
http://hdl.handle.net/10278/3662559 https://doi.org/10.5194/acp-15-5457-2015 http://www.atmos-chem-phys.net/volumes_and_issues.html |
long_lat |
ENVELOPE(123.333,123.333,-75.100,-75.100) ENVELOPE(165.287,165.287,-74.330,-74.330) ENVELOPE(164.123,164.123,-74.695,-74.695) ENVELOPE(164.117,164.117,-74.700,-74.700) |
geographic |
Arctic Antarctic Southern Ocean The Antarctic Ross Sea Concordia Station Italica Mario Zucchelli Mario Zucchelli Station |
geographic_facet |
Arctic Antarctic Southern Ocean The Antarctic Ross Sea Concordia Station Italica Mario Zucchelli Mario Zucchelli Station |
genre |
Antarc* Antarctic Arctic Climate change Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Climate change Ross Sea Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000355289200009 volume:15 issue:10 firstpage:5457 lastpage:5469 numberofpages:13 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/10278/3662559 doi:10.5194/acp-15-5457-2015 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930226733 http://www.atmos-chem-phys.net/volumes_and_issues.html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-15-5457-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
10 |
container_start_page |
5457 |
op_container_end_page |
5469 |
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