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Chemical Speciation of Thorium in Marine Biogenic Particulate Matter

Concentrations of particulate thorium in seawater were determined together with the strong organic ligand (SOL) and uranium in particulate matter (PM). The concentrations of particulate Th in surface waters of the western North Pacific and the Sea of Japan ranged from 0.05 to 1.5 pM (1 x 10 M), and...

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Autor principal: Hirose, Katsumi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: TheScientificWorldJOURNAL 2004
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5956367/
https://www.ncbi.nlm.nih.gov/pubmed/15004320
http://dx.doi.org/10.1100/tsw.2004.4
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author Hirose, Katsumi
author_facet Hirose, Katsumi
author_sort Hirose, Katsumi
collection PubMed
description Concentrations of particulate thorium in seawater were determined together with the strong organic ligand (SOL) and uranium in particulate matter (PM). The concentrations of particulate Th in surface waters of the western North Pacific and the Sea of Japan ranged from 0.05 to 1.5 pM (1 x 10 M), and showed relatively large temporal and spatial variations. In order to chemically characterize the particulate Th in seawater, the relationship between particulate Th and SOL concentrations in surface PM was examined. The result reveals that particulate Th in surface PM was well correlated with the SOL concentration in PM. The concentrations of particulate Th in surface water were linearly related to those of particulate U. Mass balance analysis suggests that the dominant chemical form of Th(IV), as well as of U, in surface PM is a surface complex with the SOL in PM. Our findings suggest that the SOL in PM is a nonmetal-specific chelator originating from the cell surface of microorganisms.
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spelling pubmed-59563672018-06-03 Chemical Speciation of Thorium in Marine Biogenic Particulate Matter Hirose, Katsumi ScientificWorldJournal Research Article Concentrations of particulate thorium in seawater were determined together with the strong organic ligand (SOL) and uranium in particulate matter (PM). The concentrations of particulate Th in surface waters of the western North Pacific and the Sea of Japan ranged from 0.05 to 1.5 pM (1 x 10 M), and showed relatively large temporal and spatial variations. In order to chemically characterize the particulate Th in seawater, the relationship between particulate Th and SOL concentrations in surface PM was examined. The result reveals that particulate Th in surface PM was well correlated with the SOL concentration in PM. The concentrations of particulate Th in surface water were linearly related to those of particulate U. Mass balance analysis suggests that the dominant chemical form of Th(IV), as well as of U, in surface PM is a surface complex with the SOL in PM. Our findings suggest that the SOL in PM is a nonmetal-specific chelator originating from the cell surface of microorganisms. TheScientificWorldJOURNAL 2004-02-26 /pmc/articles/PMC5956367/ /pubmed/15004320 http://dx.doi.org/10.1100/tsw.2004.4 Text en Copyright © 2004 Katsumi Hirose. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Hirose, Katsumi
Chemical Speciation of Thorium in Marine Biogenic Particulate Matter
title Chemical Speciation of Thorium in Marine Biogenic Particulate Matter
title_full Chemical Speciation of Thorium in Marine Biogenic Particulate Matter
title_fullStr Chemical Speciation of Thorium in Marine Biogenic Particulate Matter
title_full_unstemmed Chemical Speciation of Thorium in Marine Biogenic Particulate Matter
title_short Chemical Speciation of Thorium in Marine Biogenic Particulate Matter
title_sort chemical speciation of thorium in marine biogenic particulate matter
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5956367/
https://www.ncbi.nlm.nih.gov/pubmed/15004320
http://dx.doi.org/10.1100/tsw.2004.4
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