Determination of seleno-amino acid in natural water samples.
- 1 January 1990
- journal article
- Published by Geochemical Society of Japan in GEOCHEMICAL JOURNAL
- Vol. 24 (4) , 255-261
- https://doi.org/10.2343/geochemj.24.255
Abstract
Organic compounds in sea water samples were separated by the hollow-fiber ultrafiltration and Sephadex G-15 gel filtration methods. Chemical species of organic selenium compounds in sea water were then determined using the fractional-determination method of organic compounds which was established by Starikova (1962). The application of this method for a separation and determination of seleno-amino acid was investigated by adding radioactive L-[75Se] selenomethionine and/or 75Se as a tracer. The recovery values of the L-[75Se]selenomethionine tracer method were 93% in artificial sea water and 83% in Lake Biwa water. This fractional-separation method gave good results for the determination of seleno-amino acid in sea water samples. The concentration of seleno-amino acid in sea water samples taken from around the Bering Sea were determined as 4-20 pM.Keywords
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