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Separation and enrichment of iron (as Fe3+) and eleven metal ions in natural waters using a liquid membrane

✍ Scribed by Zhongxiao Wang; Jiezhi Li; J.C. Van Loon; R.R. Barefoot

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 554 KB
Volume: 252
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(91)87216-t

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✦ Synopsis

A liquid ion-exchange membrane was developed for the separation and quantitative recovery of iron, as Fe3+, and other cations from natural waters under controlled pH conditions. The influence of the pH of the aqueous sample on the extraction of eleven cations is illustrated. Quantitative extractions of Fe"+, Co'+ and Ca'+ at concentrations of 0.1-1.0 pg I-' from aqueous solutions are demonstrated. The average recovery of Fe3+ under optimized conditions is 99.5% with a relative standard deviation of 1.7% (n = 8). Ion conr,entrations are measured by atomic absorption spectrometry.

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