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Raman spectroscopic study of the vanadium and sulphate in blood cell homogenates of the ascidian, Ascidia gemmata

Published online by Cambridge University Press:  11 May 2009

K. Kanamori
Affiliation:
Department of Chemistry, Faculty of Science, Toyama University, Gofuku 3190, Toyama 930, Japan
H. Michibata
Affiliation:
Mukaishima Marine Biological Laboratory, Hiroshima University, Mukaishima-cho, Hiroshima 722, Japan

Abstract

The Raman spectrum of a cell homogenate obtained from the unfractioned blood cells of Ascidia gemmata was recorded in an effort to determine the ratio of the level of sulphate to that of vanadium in the blood cells. The ratio obtained was 1·47, which is close to 1·5, the value predicted if sulphate ions are present as the counter ions of V3+ ions. We found evidence that an aliphatic sulphonic acid is present in the blood cells, namely, the Raman spectrum of the cell homogenate included a band at 1044 cm−1, which corresponds to the symmetrical stretching vibration of the SO3 group of the anion of cysteic acid.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1994

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