Determination of barium in sea water by cation-exchange separation and electrothermal atomic absorption spectrometry
Dehairs, F.A.; Hoenig, M.; De Bondt, M.; Baeyens, J.; Van Den Winkel, P. (1987). Determination of barium in sea water by cation-exchange separation and electrothermal atomic absorption spectrometry. Anal. Chim. Acta 196: 33-40
In: Analytica Chimica Acta. Elsevier: New York; Amsterdam. ISSN 0003-2670; e-ISSN 1873-4324, meer
A method is described for the routine determination of barium in sea water by graphite-furnace atomic absorption spectrometry. Barium is separated from the main seawater cations by collection on a cation-exchange resin. The barium is extracted into nitric acid from a portion of the resin for injection into the pyrolytically-coated graphite furnace. The method is satisfactory for the low µg l-1 levels of barium present in ocean water, with recoveries more or equal to 99% and a relative standard deviation of <5%.
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