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 10−12 M), a...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2004-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2004.4 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832548877970964480 |
|---|---|
| author | Katsumi Hirose |
| author_facet | Katsumi Hirose |
| author_sort | Katsumi Hirose |
| collection | DOAJ |
| 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 10−12 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. |
| format | Article |
| id | doaj-art-39bcd4c3b8fa44b886901bd72bb012e9 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2004-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-39bcd4c3b8fa44b886901bd72bb012e92025-02-03T06:12:44ZengWileyThe Scientific World Journal1537-744X2004-01-014677610.1100/tsw.2004.4Chemical Speciation of Thorium in Marine Biogenic Particulate MatterKatsumi Hirose0Geochemical Research Department, Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, JapanConcentrations 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 10−12 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.http://dx.doi.org/10.1100/tsw.2004.4 |
| spellingShingle | Katsumi Hirose Chemical Speciation of Thorium in Marine Biogenic Particulate Matter The Scientific World Journal |
| 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 |
| url | http://dx.doi.org/10.1100/tsw.2004.4 |
| work_keys_str_mv | AT katsumihirose chemicalspeciationofthoriuminmarinebiogenicparticulatematter |