TY - JOUR
T1 - Variation of the distribution coefficients of rare earth elements in modern coral-lattices
T2 - Species and site dependencies
AU - Akagi, T.
AU - Hashimoto, Y.
AU - F-F, Fu
AU - Tsuno, H.
AU - Tao, H.
AU - Nakano, Y.
N1 - Funding Information:
This research was supported by the Showa Shell Sekiyu Foundation for Promotion of Environmental Research. We thank Dr Tamotsu Oomori, Biology and Marine Science, University of the Ryukyus, for his generous help in arrangement of the coral sampling. We thank K. H. Johannesson, E. R. Sholkovitz, and an anonymous reviewer for their valuable comments and English correction and also thank R. H. Byrne for his insightful suggestion to strengthen the idea of the manuscript.
PY - 2004/5/15
Y1 - 2004/5/15
N2 - Rare earth element (REE) concentrations in the carbonate lattice of four species of coral have been analyzed and compared with the dissolved REE in ambient seawaters. The corals were from two areas of different salinity, marine (34-34.5) and bay (33-34). The measurement of REE in coral was carried out with inductively coupled plasma mass spectrometry (ICP-MS) after meticulous washing of coral samples, digestion with acetic acid and preconcentration of REE. The concentrations of REE in the two ambient seawaters were quite different, being ten-times higher in the bay area and enriched in light REE. However, the average distribution coefficients (D's) were almost identical in the two areas. Substantial distribution coefficient differences were observed among the four coral species and the magnitude of inter-species variation in D was also species-dependent. Theoretical calculations imply that pH variation could cause variations in D large enough to account for the small differences between the two areas.
AB - Rare earth element (REE) concentrations in the carbonate lattice of four species of coral have been analyzed and compared with the dissolved REE in ambient seawaters. The corals were from two areas of different salinity, marine (34-34.5) and bay (33-34). The measurement of REE in coral was carried out with inductively coupled plasma mass spectrometry (ICP-MS) after meticulous washing of coral samples, digestion with acetic acid and preconcentration of REE. The concentrations of REE in the two ambient seawaters were quite different, being ten-times higher in the bay area and enriched in light REE. However, the average distribution coefficients (D's) were almost identical in the two areas. Substantial distribution coefficient differences were observed among the four coral species and the magnitude of inter-species variation in D was also species-dependent. Theoretical calculations imply that pH variation could cause variations in D large enough to account for the small differences between the two areas.
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U2 - 10.1016/j.gca.2003.12.014
DO - 10.1016/j.gca.2003.12.014
M3 - Article
AN - SCOPUS:2342472774
SN - 0016-7037
VL - 68
SP - 2265
EP - 2273
JO - Geochimica et Cosmochimica Acta
JF - Geochimica et Cosmochimica Acta
IS - 10
ER -
