✦ LIBER ✦

Preconcentration of palladium(II) from water with thionalide loaded on silica gel

✍ Scribed by Kikuo Terada; Ken Matsumoto; Yutaka Taniguchi

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 382 KB
Volume: 147
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(83)80114-7

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✦ Synopsis

2-Mercapto-iV2naphthylacetamide (thionalide) on silica gel IS used for rapid preconcentration of pg 1.' levels of palladium(I1) from aqueous solution, followed by atomic absorption spectrometric measurement. In batch experiments, palladium was quantitatively retained on the gel from solutions 5 M in acid to pH 8; equilibrium was achieved within 10 s. The chelating capacity of the gel was 7.5 pmol Pd g-i at pH < 4. The effect of flow rate on retention was studied Palladium retained on the column was completely eluted with 20 ml of 0.2 M thiourea in 0.1 M hydrochloric acid. The palladium concentration in sea water is shown to be < 0.03 bg 1-l.

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