Liquid-liquid extraction separation of iron (III) with 2-ethyl hexyl phosphonic acid mono 2-ethyl hexyl ester

Liquid-liquid extraction separation of iron(III) with 2-ethyl hexyl phosphonic acid mono 2-ethyl hexyl ester (PC-88A) in toluene has been studied. Quantitative extraction of iron(III) with 5 × 10 −3 M PC-88A in toluene is observed in the pH range 0.75–2.5. From the extracted complex species in the o...

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Bibliographic Details
Published in:Talanta (Oxford) 1997-07, Vol.44 (7), p.1285-1290
Main Authors: Jayachandran, J., Dhadke, P.M.
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Chemistry
Exact sciences and technology
Iron (III)
Liquid-liquid extraction
Metals. Metallurgy
PC-88A
Spectrometric and optical methods
Thiocyanate method
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Summary:Liquid-liquid extraction separation of iron(III) with 2-ethyl hexyl phosphonic acid mono 2-ethyl hexyl ester (PC-88A) in toluene has been studied. Quantitative extraction of iron(III) with 5 × 10 −3 M PC-88A in toluene is observed in the pH range 0.75–2.5. From the extracted complex species in the organic phase iron(III) was stripped with 1–4 M HNO 3, 1.5–4 M H 2SO 4 and 1.5–4 M HCl, and later determined spectrophotometrically by thiocyanate method. Separation of iron(III) was carried out with some of the first transition metals in binary and multicomponent mixtures. This method was extended for the determination of iron in real samples.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(97)02190-5