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...
Published in: | Marine Pollution Bulletin |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/decline-of-anthropogenic-lead-in-south-atlantic-ocean-surface-waters-from-1990-to-2011(0b317eec-980f-4121-812b-fe77b2972907).html https://doi.org/10.1016/j.marpolbul.2023.114798 https://research-repository.st-andrews.ac.uk/bitstream/10023/27185/1/Olivelli_2023_MPB_AnthropogenicLead_CC.pdf |
id |
ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/0b317eec-980f-4121-812b-fe77b2972907 |
---|---|
record_format |
openpolar |
spelling |
ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/0b317eec-980f-4121-812b-fe77b2972907 2024-06-23T07:56:47+00:00 Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011:new constraints from concentration and isotope data Olivelli, Arianna Murphy, Katy Bridgestock, Luke Wilson, David J. Rijkenberg, Micha Middag, Rob Weiss, Dominik J. van de Flierdt, Tina Rehkämper, Mark 2023-04-01 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/decline-of-anthropogenic-lead-in-south-atlantic-ocean-surface-waters-from-1990-to-2011(0b317eec-980f-4121-812b-fe77b2972907).html https://doi.org/10.1016/j.marpolbul.2023.114798 https://research-repository.st-andrews.ac.uk/bitstream/10023/27185/1/Olivelli_2023_MPB_AnthropogenicLead_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/decline-of-anthropogenic-lead-in-south-atlantic-ocean-surface-waters-from-1990-to-2011(0b317eec-980f-4121-812b-fe77b2972907).html info:eu-repo/semantics/openAccess Olivelli , A , Murphy , K , Bridgestock , L , Wilson , D J , Rijkenberg , M , Middag , R , Weiss , D J , van de Flierdt , T & Rehkämper , M 2023 , ' Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011 : new constraints from concentration and isotope data ' , Marine Pollution Bulletin , vol. 189 , 114798 . https://doi.org/10.1016/j.marpolbul.2023.114798 Lead Isotopic composition Seawater Pollution GEOTRACES article 2023 ftunstandrewcris https://doi.org/10.1016/j.marpolbul.2023.114798 2024-06-13T01:23:47Z 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 University of St Andrews: Research Portal Marine Pollution Bulletin 189 114798 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Lead Isotopic composition Seawater Pollution GEOTRACES |
spellingShingle |
Lead Isotopic composition Seawater Pollution GEOTRACES Olivelli, Arianna Murphy, Katy Bridgestock, Luke Wilson, David J. Rijkenberg, Micha Middag, Rob Weiss, Dominik J. van de Flierdt, Tina Rehkämper, Mark Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011:new constraints from concentration and isotope data |
topic_facet |
Lead Isotopic composition Seawater Pollution GEOTRACES |
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, Arianna Murphy, Katy Bridgestock, Luke Wilson, David J. Rijkenberg, Micha Middag, Rob Weiss, Dominik J. van de Flierdt, Tina Rehkämper, Mark |
author_facet |
Olivelli, Arianna Murphy, Katy Bridgestock, Luke Wilson, David J. Rijkenberg, Micha Middag, Rob Weiss, Dominik J. van de Flierdt, Tina Rehkämper, Mark |
author_sort |
Olivelli, Arianna |
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://research-portal.st-andrews.ac.uk/en/researchoutput/decline-of-anthropogenic-lead-in-south-atlantic-ocean-surface-waters-from-1990-to-2011(0b317eec-980f-4121-812b-fe77b2972907).html https://doi.org/10.1016/j.marpolbul.2023.114798 https://research-repository.st-andrews.ac.uk/bitstream/10023/27185/1/Olivelli_2023_MPB_AnthropogenicLead_CC.pdf |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Olivelli , A , Murphy , K , Bridgestock , L , Wilson , D J , Rijkenberg , M , Middag , R , Weiss , D J , van de Flierdt , T & Rehkämper , M 2023 , ' Decline of anthropogenic lead in South Atlantic Ocean surface waters from 1990 to 2011 : new constraints from concentration and isotope data ' , Marine Pollution Bulletin , vol. 189 , 114798 . https://doi.org/10.1016/j.marpolbul.2023.114798 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/decline-of-anthropogenic-lead-in-south-atlantic-ocean-surface-waters-from-1990-to-2011(0b317eec-980f-4121-812b-fe77b2972907).html |
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 |
_version_ |
1802650116159438848 |