2024-03-28T11:46:08Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00001517
2022-12-15T03:34:15Z
423:424:425
453:454
Determination of Rare Earth Elements, Thorium and Uranium in Seaweed Samples on the Coast in Niigata Prefecture by Inductively Coupled Plasma Mass Spectrometry
Sakamoto, Nobuo
4125
Kano, Naoki
4126
Imaizumi, Hiroshi
4127
Seaweed sample
Seawater sample
Rare earth elements (REEs)
Niigata Prefecture
ICP-MS
The determination of rare earth elements (REEs), thorium (Th), and uranium (U) in seaweeds of various species and in ambient surface seawater were performed by inductively coupled plasma mass spectrometry (ICP-MS). The seaweeds and the seawater samples were collected at 10 different coastal areas of Niigata Prefecture in Japan twice a year (spring and autumn) in 2004 and 2005.\nResults showed that, concentration of REEs in seaweed species from Niigata Prefecture were about 102-103 times higher than those in seawater;and the enrichment factors of REEs was larger in heavy REE than light REE. A significant concentrations difference of REEs, Th, U was found among species even in the same phylum. The concentration of U in Undaria pinnatifida was the highest. Considering the experimental result that Undaria pinnatifida has low concentration of REEs among typical brown algae, different REEs and U uptake mechanisms were suggested. The concentration of REEs, Th and U did not vary remarkably among sampling points and/or seasons.
journal article
Elsevier
2006-10
application/pdf
Applied Geochemistry
10
23
2955
2960
AA10681191
0883-2927
https://niigata-u.repo.nii.ac.jp/record/1517/files/23_10_2955-2960.pdf
eng
http://doi.org/10.1016/j.apgeochem.2008.04.011