Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer
Size-segregated particulate air samples were collected during the austral summer of 2016–2017 at Palmer Station on Anvers Island, western Antarctic Peninsula, to characterize trace elements in aerosols. Trace elements in aerosol samples – including Al, P, Ca, Ti, V, Mn, Ni, Cu, Zn, Ce, and Pb – were...
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ftdoajarticles:oai:doaj.org/article:67ea83c4fd5047a29454701d6a96a94a 2023-05-15T13:52:25+02:00 Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer S. Fan Y. Gao R. M. Sherrell S. Yu K. Bu 2021-02-01T00:00:00Z https://doi.org/10.5194/acp-21-2105-2021 https://doaj.org/article/67ea83c4fd5047a29454701d6a96a94a EN eng Copernicus Publications https://acp.copernicus.org/articles/21/2105/2021/acp-21-2105-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-2105-2021 1680-7316 1680-7324 https://doaj.org/article/67ea83c4fd5047a29454701d6a96a94a Atmospheric Chemistry and Physics, Vol 21, Pp 2105-2124 (2021) Physics QC1-999 Chemistry QD1-999 article 2021 ftdoajarticles https://doi.org/10.5194/acp-21-2105-2021 2022-12-31T09:43:45Z Size-segregated particulate air samples were collected during the austral summer of 2016–2017 at Palmer Station on Anvers Island, western Antarctic Peninsula, to characterize trace elements in aerosols. Trace elements in aerosol samples – including Al, P, Ca, Ti, V, Mn, Ni, Cu, Zn, Ce, and Pb – were determined by total digestion and a sector field inductively coupled plasma mass spectrometer (SF-ICP-MS). The crustal enrichment factors (EF crust ) and k -means clustering results of particle-size distributions show that these elements are derived primarily from three sources: (1) regional crustal emissions, including possible resuspension of soils containing biogenic P, (2) long-range transport, and (3) sea salt. Elements derived from crustal sources (Al, P, Ti, V, Mn, Ce) with EF crust <10 were dominated by the coarse-mode particles ( >1.8 µm ) and peaked around 4.4 µm in diameter, reflecting the regional contributions. Non-crustal elements (Ca, Ni, Cu, Zn, Pb) showed EF crust >10 . Aerosol Pb was primarily dominated by fine-mode particles, peaking at 0.14–0.25 µm , and likely was impacted by air masses from southern South America based on air mass back trajectories. However, Ni, Cu, and Zn were not detectable in most size fractions and did not present clear size patterns. Sea-salt elements (Ca, Na + , K + ) showed a single-mode distribution and peaked at 2.5–4.4 µm . The estimated dry deposition fluxes of mineral dust for the austral summer, based on the particle-size distributions of Al measured at Palmer Station, ranged from 0.65 to 28 mg m −2 yr −1 with a mean of 5.5±5.0 mg m −2 yr −1 . The estimated dry deposition fluxes of the target trace elements in this study were lower than most fluxes reported previously for coastal Antarctica and suggest that atmospheric input of trace elements through dry deposition processes may play a minor role in determining trace element concentrations in surface seawater over the continental shelf of the western Antarctic Peninsula. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Anvers Island Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Antarctic Peninsula Austral Palmer Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Palmer-Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Anvers ENVELOPE(-63.500,-63.500,-64.600,-64.600) Anvers Island ENVELOPE(-63.500,-63.500,-64.600,-64.600) Atmospheric Chemistry and Physics 21 3 2105 2124 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 S. Fan Y. Gao R. M. Sherrell S. Yu K. Bu Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Size-segregated particulate air samples were collected during the austral summer of 2016–2017 at Palmer Station on Anvers Island, western Antarctic Peninsula, to characterize trace elements in aerosols. Trace elements in aerosol samples – including Al, P, Ca, Ti, V, Mn, Ni, Cu, Zn, Ce, and Pb – were determined by total digestion and a sector field inductively coupled plasma mass spectrometer (SF-ICP-MS). The crustal enrichment factors (EF crust ) and k -means clustering results of particle-size distributions show that these elements are derived primarily from three sources: (1) regional crustal emissions, including possible resuspension of soils containing biogenic P, (2) long-range transport, and (3) sea salt. Elements derived from crustal sources (Al, P, Ti, V, Mn, Ce) with EF crust <10 were dominated by the coarse-mode particles ( >1.8 µm ) and peaked around 4.4 µm in diameter, reflecting the regional contributions. Non-crustal elements (Ca, Ni, Cu, Zn, Pb) showed EF crust >10 . Aerosol Pb was primarily dominated by fine-mode particles, peaking at 0.14–0.25 µm , and likely was impacted by air masses from southern South America based on air mass back trajectories. However, Ni, Cu, and Zn were not detectable in most size fractions and did not present clear size patterns. Sea-salt elements (Ca, Na + , K + ) showed a single-mode distribution and peaked at 2.5–4.4 µm . The estimated dry deposition fluxes of mineral dust for the austral summer, based on the particle-size distributions of Al measured at Palmer Station, ranged from 0.65 to 28 mg m −2 yr −1 with a mean of 5.5±5.0 mg m −2 yr −1 . The estimated dry deposition fluxes of the target trace elements in this study were lower than most fluxes reported previously for coastal Antarctica and suggest that atmospheric input of trace elements through dry deposition processes may play a minor role in determining trace element concentrations in surface seawater over the continental shelf of the western Antarctic Peninsula. |
format |
Article in Journal/Newspaper |
author |
S. Fan Y. Gao R. M. Sherrell S. Yu K. Bu |
author_facet |
S. Fan Y. Gao R. M. Sherrell S. Yu K. Bu |
author_sort |
S. Fan |
title |
Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer |
title_short |
Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer |
title_full |
Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer |
title_fullStr |
Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer |
title_full_unstemmed |
Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer |
title_sort |
concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the antarctic peninsula in austral summer |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/acp-21-2105-2021 https://doaj.org/article/67ea83c4fd5047a29454701d6a96a94a |
long_lat |
ENVELOPE(-64.050,-64.050,-64.770,-64.770) ENVELOPE(-64.050,-64.050,-64.770,-64.770) ENVELOPE(-63.500,-63.500,-64.600,-64.600) ENVELOPE(-63.500,-63.500,-64.600,-64.600) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Austral Palmer Station Palmer-Station Anvers Anvers Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Austral Palmer Station Palmer-Station Anvers Anvers Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Anvers Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Anvers Island |
op_source |
Atmospheric Chemistry and Physics, Vol 21, Pp 2105-2124 (2021) |
op_relation |
https://acp.copernicus.org/articles/21/2105/2021/acp-21-2105-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-2105-2021 1680-7316 1680-7324 https://doaj.org/article/67ea83c4fd5047a29454701d6a96a94a |
op_doi |
https://doi.org/10.5194/acp-21-2105-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
3 |
container_start_page |
2105 |
op_container_end_page |
2124 |
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1766256707532488704 |