Liquid–liquid extraction and separation of lanthanum( <scp>III</scp> ) from titanium( <scp>IV</scp> ), zirconium( <scp>IV</scp> ), hafnium( <scp>IV</scp> ), thorium( <scp>IV</scp> ) and uranium( <scp>VI</scp> )
摘要
A method for the solvent extraction of lanthanum from salicylate media by using triphenylphosphine oxide is presented. Lanthanum is extracted quantitatively from 2.0 × 10–2–5.0 × 10–2 mol dm–3 sodium salicylate solution at pH 4.0–5.0 using 1.5% triphenylphosphine oxide dissolved in toluene. The extracted metal ion is stripped using water and estimated spectrophotometrically following complexation with Thoron-I. A possible mechanism of extraction is discussed. The method permits the separation of lanthanum from titanium, zirconium, hafnium, thorium and uranium.
引用本文（GB/T 7714）
N. G. Bhilare, V. M. Shinde. Liquid–liquid extraction and separation of lanthanum( <scp>III</scp> ) from titanium( <scp>IV</scp> ), zirconium( <scp>IV</scp> ), hafnium( <scp>IV</scp> ), thorium( <scp>IV</scp> ) and uranium( <scp>VI</scp> )[J]. The Analyst, 1995.
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