Issue 1, 2002
From the journal:

Analyst

Ultrasonic extraction of iron from non-aqueous liquids

Andrew J. Wain,a   Nathan S. Lawrence,a   James Davisb  and  Richard G. Compton*a  

* Corresponding authors

a Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UK
E-mail: richard.compton@chemistry.ox.ac.uk

b Department of Chemistry, University of Surrey, Surrey, Guildford, UK

Abstract

A novel procedure for the extraction of iron from predominately organic solvents has been described. An ultrasonic probe was used to create a microemulsion with a small quantity of nitric acid such that labile iron could be released into the aqueous vesicles and subsequently quantified after phase separation. The analytical and operational viability of using a simple colorimetric assay based on the coordination of aminothiol ligands (principally homocysteine) was evaluated in terms of signal sensitivity, selectivity and stability. The use of homocysteine provided a linear range for iron(III) from 9 μM to 50 μM with a corresponding limit of detection of 2 μM (based on 3sb). The effectiveness of the approach was assessed through the recovery of 0.3 ppm iron from a sample of commercial kerosene and the results compared with those obtained through attempting to quantify the iron under passive (ultrasonically silent) conditions.

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Article information

DOI
https://doi.org/10.1039/B109852G
Article type
Communication
Submitted
29 Oct 2001
Accepted
15 Nov 2001
First published
04 Dec 2001

Analyst, 2002,127, 8-10

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Ultrasonic extraction of iron from non-aqueous liquids

A. J. Wain, N. S. Lawrence, J. Davis and R. G. Compton, Analyst, 2002, 127, 8 DOI: 10.1039/B109852G

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