Determination of Ytterbium in Seawater by Graphite Furnace Atomic Absorption Spectrometry after Coprecipitation and Solvent Extraction

Determination of Ytterbium in Seawater by Graphite Furnace Atomic Absorption Spectrometry after Coprecipitation and Solvent Extraction

Trace amounts of ytterbium in seawater were coprecipitated with iron(III) hydroxide, and the precipitate was dissolved in 2ml of 8mol/dm3 hydrochloric acid. Iron(III) ions were removed by extraction with 2, 6-dimethyl-4-heptanone, and a 20-μl aliquot of the aqueous phase was directly injected into a...

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Veröffentlicht in:Analytical Sciences 1991/12/10, Vol.7(6), pp.889-892
Hauptverfasser: FUJINO, Osamu, NISHIDA, Sino, TOGAWA, Hideo, HIRAKI, Keizo
Format: Artikel
Sprache:eng
Schlagworte:
Analytical chemistry
Chemistry
coprecipitation
Exact sciences and technology
graphite furnace atomic absorption spectrometry
seawater
solvent extraction
Spectrometric and optical methods
Ytterbium
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Zusammenfassung:Trace amounts of ytterbium in seawater were coprecipitated with iron(III) hydroxide, and the precipitate was dissolved in 2ml of 8mol/dm3 hydrochloric acid. Iron(III) ions were removed by extraction with 2, 6-dimethyl-4-heptanone, and a 20-μl aliquot of the aqueous phase was directly injected into a graphite furnace atomizer. Ytterbium in seawater was found to be (0.62-1.35)×10-9g/l.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.7.889