Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data
Anthropogenic emissions have severely perturbed the marine biogeochemical cycle of lead (Pb). Here, we present new Pb concentration and isotope data for surface seawater from GEOTRACES section GA02, sampled in the western South Atlantic in 2011. The South Atlantic is divided into three hydrographic...
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Language: | English |
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2023
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Online Access: | https://www.vliz.be/imisdocs/publications/33/391033.pdf |
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ftnioz:oai:imis.nioz.nl:365613 2023-07-30T04:06:50+02:00 Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data Olivelli, A. Murphy, K. Bridgestock, L. Wilson, D.J. Rijkenberg, M.J.A. Middag, R. Weiss, D.J. van de Flierdt, T. Rehkämper, M. 2023 application/pdf https://www.vliz.be/imisdocs/publications/33/391033.pdf en eng info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.marpolbul.2023.114798 https://www.vliz.be/imisdocs/publications/33/391033.pdf info:eu-repo/semantics/openAccess %3Ci%3EMar.+Pollut.+Bull.+189%3C%2Fi%3E%3A+114798.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.marpolbul.2023.114798%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.marpolbul.2023.114798%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftnioz https://doi.org/10.1016/j.marpolbul.2023.114798 2023-07-12T22:21:21Z Anthropogenic emissions have severely perturbed the marine biogeochemical cycle of lead (Pb). Here, we present new Pb concentration and isotope data for surface seawater from GEOTRACES section GA02, sampled in the western South Atlantic in 2011. The South Atlantic is divided into three hydrographic zones: equatorial (0–20°S), subtropical (20–40°S), and subantarctic (40–60°S). The equatorial zone is dominated by previously deposited Pb transported by surface currents. The subtropical zone largely reflects anthropogenic Pb emissions from South America, whilst the subantarctic zone presents a mixture of South American anthropogenic Pb and natural Pb from Patagonian dust. The mean Pb concentration of 16.7 ± 3.8 pmol/kg is 34 % lower than in the 1990s, mostly driven by changes in the subtropical zone, with the fraction of natural Pb increasing from 24 % to 36 % between 1996 and 2011. Although anthropogenic Pb remains predominant, these findings demonstrate the effectiveness of policies that banned leaded gasoline. Article in Journal/Newspaper South Atlantic Ocean NIOZ Repository (Royal Netherlands Institute for Sea Research) Marine Pollution Bulletin 189 114798 |
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Open Polar |
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NIOZ Repository (Royal Netherlands Institute for Sea Research) |
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ftnioz |
language |
English |
description |
Anthropogenic emissions have severely perturbed the marine biogeochemical cycle of lead (Pb). Here, we present new Pb concentration and isotope data for surface seawater from GEOTRACES section GA02, sampled in the western South Atlantic in 2011. The South Atlantic is divided into three hydrographic zones: equatorial (0–20°S), subtropical (20–40°S), and subantarctic (40–60°S). The equatorial zone is dominated by previously deposited Pb transported by surface currents. The subtropical zone largely reflects anthropogenic Pb emissions from South America, whilst the subantarctic zone presents a mixture of South American anthropogenic Pb and natural Pb from Patagonian dust. The mean Pb concentration of 16.7 ± 3.8 pmol/kg is 34 % lower than in the 1990s, mostly driven by changes in the subtropical zone, with the fraction of natural Pb increasing from 24 % to 36 % between 1996 and 2011. Although anthropogenic Pb remains predominant, these findings demonstrate the effectiveness of policies that banned leaded gasoline. |
format |
Article in Journal/Newspaper |
author |
Olivelli, A. Murphy, K. Bridgestock, L. Wilson, D.J. Rijkenberg, M.J.A. Middag, R. Weiss, D.J. van de Flierdt, T. Rehkämper, M. |
spellingShingle |
Olivelli, A. Murphy, K. Bridgestock, L. Wilson, D.J. Rijkenberg, M.J.A. Middag, R. Weiss, D.J. van de Flierdt, T. Rehkämper, M. Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data |
author_facet |
Olivelli, A. Murphy, K. Bridgestock, L. Wilson, D.J. Rijkenberg, M.J.A. Middag, R. Weiss, D.J. van de Flierdt, T. Rehkämper, M. |
author_sort |
Olivelli, A. |
title |
Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data |
title_short |
Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data |
title_full |
Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data |
title_fullStr |
Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data |
title_full_unstemmed |
Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011: New constraints from concentration and isotope data |
title_sort |
decline of anthropogenic lead in south atlantic ocean surface waters from 1990 to 2011: new constraints from concentration and isotope data |
publishDate |
2023 |
url |
https://www.vliz.be/imisdocs/publications/33/391033.pdf |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
%3Ci%3EMar.+Pollut.+Bull.+189%3C%2Fi%3E%3A+114798.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.marpolbul.2023.114798%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.marpolbul.2023.114798%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.marpolbul.2023.114798 https://www.vliz.be/imisdocs/publications/33/391033.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.marpolbul.2023.114798 |
container_title |
Marine Pollution Bulletin |
container_volume |
189 |
container_start_page |
114798 |
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1772819767323787264 |