Pathways of superoxide (o2–) decay in the eastern tropical north atlantic
Superoxide (O-2(-): IUPAC name dioxide (center dot 1-)) is an important transient reactive oxygen species (ROS) in the ocean formed as an intermediate in the redox transformation of oxygen (O-2) into hydrogen peroxide (H2O2) and vice versa. This highly reactive and very short-lived radical anion can...
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ftnuigalway:oai:https://researchrepository.universityofgalway.ie:10379/14457 2024-09-30T14:39:23+00:00 Pathways of superoxide (o2–) decay in the eastern tropical north atlantic Wuttig, Kathrin Heller, Maija I. Croot, Peter L. 2013-08-26 http://hdl.handle.net/10379/14457 https://doi.org/10.13025/27669 https://doi.org/10.1021/es401658t unknown American Chemical Society (ACS) Environmental Science & Technology Wuttig, Kathrin; Heller, Maija I. Croot, Peter L. (2013). Pathways of superoxide (o2–) decay in the eastern tropical north atlantic. Environmental Science & Technology 47 (18), 10249-10256 0013-936X,1520-5851 http://hdl.handle.net/10379/14457 https://doi.org/10.13025/27669 doi:10.1021/es401658t Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ spatial variability chattonella-marina dismutase activity hydrogen-peroxide manganese oxides coastal waters surface waters cu stress seawater complexes Article 2013 ftnuigalway https://doi.org/10.13025/2766910.1021/es401658t 2024-09-17T14:44:30Z Superoxide (O-2(-): IUPAC name dioxide (center dot 1-)) is an important transient reactive oxygen species (ROS) in the ocean formed as an intermediate in the redox transformation of oxygen (O-2) into hydrogen peroxide (H2O2) and vice versa. This highly reactive and very short-lived radical anion can be produced both via photochemical and biological processes in the ocean. In this paper we examine the decomposition rate of O-2(-) throughout the water column, using new data collected in the Eastern Tropical North Atlantic (ETNA) Ocean. For this approach we applied a semi factorial experimental design to identify and quantify the pathways of the major identified sinks in the ocean. In this work we occupied six stations, two on the West African continental shelf and four open ocean stations, including the CVOO time series site adjacent to Cape Verde. Our results indicate that, in the surface ocean impacted by Saharan aerosols and coastal sediment resuspension, the main decay pathways for superoxide are via reactions with Mn(II) and organic matter. Article in Journal/Newspaper North Atlantic National University of Ireland (NUI), Galway: ARAN |
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Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
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ftnuigalway |
language |
unknown |
topic |
spatial variability chattonella-marina dismutase activity hydrogen-peroxide manganese oxides coastal waters surface waters cu stress seawater complexes |
spellingShingle |
spatial variability chattonella-marina dismutase activity hydrogen-peroxide manganese oxides coastal waters surface waters cu stress seawater complexes Wuttig, Kathrin Heller, Maija I. Croot, Peter L. Pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
topic_facet |
spatial variability chattonella-marina dismutase activity hydrogen-peroxide manganese oxides coastal waters surface waters cu stress seawater complexes |
description |
Superoxide (O-2(-): IUPAC name dioxide (center dot 1-)) is an important transient reactive oxygen species (ROS) in the ocean formed as an intermediate in the redox transformation of oxygen (O-2) into hydrogen peroxide (H2O2) and vice versa. This highly reactive and very short-lived radical anion can be produced both via photochemical and biological processes in the ocean. In this paper we examine the decomposition rate of O-2(-) throughout the water column, using new data collected in the Eastern Tropical North Atlantic (ETNA) Ocean. For this approach we applied a semi factorial experimental design to identify and quantify the pathways of the major identified sinks in the ocean. In this work we occupied six stations, two on the West African continental shelf and four open ocean stations, including the CVOO time series site adjacent to Cape Verde. Our results indicate that, in the surface ocean impacted by Saharan aerosols and coastal sediment resuspension, the main decay pathways for superoxide are via reactions with Mn(II) and organic matter. |
format |
Article in Journal/Newspaper |
author |
Wuttig, Kathrin Heller, Maija I. Croot, Peter L. |
author_facet |
Wuttig, Kathrin Heller, Maija I. Croot, Peter L. |
author_sort |
Wuttig, Kathrin |
title |
Pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
title_short |
Pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
title_full |
Pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
title_fullStr |
Pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
title_full_unstemmed |
Pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
title_sort |
pathways of superoxide (o2–) decay in the eastern tropical north atlantic |
publisher |
American Chemical Society (ACS) |
publishDate |
2013 |
url |
http://hdl.handle.net/10379/14457 https://doi.org/10.13025/27669 https://doi.org/10.1021/es401658t |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Environmental Science & Technology Wuttig, Kathrin; Heller, Maija I. Croot, Peter L. (2013). Pathways of superoxide (o2–) decay in the eastern tropical north atlantic. Environmental Science & Technology 47 (18), 10249-10256 0013-936X,1520-5851 http://hdl.handle.net/10379/14457 https://doi.org/10.13025/27669 doi:10.1021/es401658t |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.13025/2766910.1021/es401658t |
_version_ |
1811641979428143104 |