Oxidative Formation and Removal of Complexed Mn(III) by Pseudomonas Species

Autor: Mitchell H. Wright, Kati Geszvain, Véronique E. Oldham, George W. Luther, Bradley M. Tebo

Publikováno v: Frontiers in Microbiology, Vol 9 (2018)

The observation of significant concentrations of soluble Mn(III) complexes in oxic, suboxic, and some anoxic waters has triggered a re-evaluation of the previous Mn paradigm which focused on the cycling between soluble Mn(II) and insoluble Mn(III,IV)

Externí odkaz: https://doaj.org/article/1b739f6ea9044f8d9a9e78bd10b36d66

Fe-catalyzed sulfide oxidation in hydrothermal plumes is a source of reactive oxygen species to the ocean

Autor: Richard Rosas, Timothy J. Shaw, Aubin Thibault de Chanvalon, Nicole R. Coffey, Dewamunnage M. C. Dias, George W. Luther, Mustafa Yücel, John L. Ferry, Véronique E. Oldham

Publikováno v: Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 2021, 118 (40), pp.e2026654118. ⟨10.1073/pnas.2026654118⟩

Significance The Fe-catalyzed oxidation of sulfide by dioxygen in hydrothermal vent plumes is shown to be a source of reactive oxygen species (ROS) to the deep ocean. ROS are a class of powerful oxidants, the most reactive of which can react with rec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a07298350ff9f394fb65963727bb272f
https://pubmed.ncbi.nlm.nih.gov/34593633

Distribution of desferrioxamine-B-extractable soluble manganese(III) and particulate MnO2 in the St. Lawrence Estuary, Canada

Autor: Matthew R. Jones, Véronique E. Oldham, George W. Luther, Alfonso Mucci, Bradley M. Tebo

Publikováno v: Marine Chemistry. 208:70-82

Soluble organically-complexed manganese(III) (Mn(III)-L) is an intermediate species in the manganese cycle. The reactivity of the complex(es) depends on the abundance and nature of the ligand(s), as well as its physicochemical environment. Currently,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f210765df70cadb703ba7f8f6e39d9c5
https://doi.org/10.1016/j.marchem.2018.11.005

Dark Reduction Drives Evasion of Mercury From the Ocean

Autor: Véronique E. Oldham, Ryan M. Marsico, Tong Zhang, Katlin L. Bowman, Colleen M. Hansel, Bettina M. Voelker, Priya M. Ganguli, Gretchen J. Swarr, Carl H. Lamborg

Publikováno v: Frontiers in Environmental Chemistry. 2

Much of the surface water of the ocean is supersaturated in elemental mercury (Hg0) with respect to the atmosphere, leading to sea-to-air transfer or evasion. This flux is large, and nearly balances inputs from the atmosphere, rivers and hydrothermal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f89c688c5edc7d05bd0c951009a8ce6
https://doi.org/10.3389/fenvc.2021.659085

Revisiting Mn and Fe removal in humic rich estuaries

Autor: Véronique E. Oldham, George W. Luther, Megan T. Miller, Laramie T. Jensen

Publikováno v: Geochimica et Cosmochimica Acta. 209:267-283

Metal removal by estuarine mixing has been studied for several decades, but few studies emphasize dissolved metal speciation and organic ligand complexation. Findings from the last decade indicate that metal-humic complexation can be significant for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a81d0e113076fdd1e9a859232b47e14
https://doi.org/10.1016/j.gca.2017.04.001