Extraction of dicyanoaurate(I) using supported liquid membranes in a flow-injection manifold: evaluation of extractants

Several potential extractants were considered as the active compound in supported liquid membranes (SLMs) for the selective extraction of dicyanoaurate(I) from alkaline proces solutions. SLM systems containing primary, secondary, tertiary, and quaternary amines, in which the extraction and back-extr...

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Published inAnalytica chimica acta Vol. 274; no. 2; pp. 283 - 292
Main Authors Barnes, D.E., Taylor, M.J.C., Marshall, G.D., Van Staden, J.F.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.03.1993
Elsevier
Subjects
Amines
Chemistry
Colloidal state and disperse state
Dicyanoaurate(I)
Exact sciences and technology
Flow-injection
General and physical chemistry
Gold
Membranes
Solvent extraction
Supported liquid membranes
Gold
Amines
Flow-injection
Solvent extraction
Supported liquid membranes
Dicyanoaurate(I)
Extraction agent
Gold I Complexes
Liquid liquid extraction
Theoretical study
Anionic complex
Liquid membrane
Selectivity
Transition metal Complexes
Permeability
Cyano complex
Manifold
Tertiary amine
Primary amine
Secondary amine
Flow injection
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Summary:Several potential extractants were considered as the active compound in supported liquid membranes (SLMs) for the selective extraction of dicyanoaurate(I) from alkaline proces solutions. SLM systems containing primary, secondary, tertiary, and quaternary amines, in which the extraction and back-extraction is achieved in one step, are proposed. The various SLMs were compared using flow-injection analysis (FIA). They were evaluated on the basis of their stability, selectivity, and respective permeability for gold.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(93)80477-3