Ultrasonic extraction of iron from non-aqueous liquids

AJ Wain, NS Lawrence, J Davis, RG Compton

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    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 muM to 50 muM with a corresponding limit of detection of 2 muM (based on 3s(b)). 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.
    LanguageEnglish
    Pages8-10
    JournalANALYST
    Volume127
    Issue number1
    Publication statusPublished - Jan 2002

    Fingerprint

    Iron
    Ultrasonics
    Liquids
    Homocysteine
    Nitric Acid
    Microemulsions
    Kerosene
    Phase separation
    Organic solvents
    Assays
    Ligands
    Recovery

    Cite this

    Wain, AJ., Lawrence, NS., Davis, J., & Compton, RG. (2002). Ultrasonic extraction of iron from non-aqueous liquids. ANALYST, 127(1), 8-10.
    Wain, AJ ; Lawrence, NS ; Davis, J ; Compton, RG. / Ultrasonic extraction of iron from non-aqueous liquids. In: ANALYST. 2002 ; Vol. 127, No. 1. pp. 8-10.
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    Wain, AJ, Lawrence, NS, Davis, J & Compton, RG 2002, 'Ultrasonic extraction of iron from non-aqueous liquids', ANALYST, vol. 127, no. 1, pp. 8-10.

    Ultrasonic extraction of iron from non-aqueous liquids. / Wain, AJ; Lawrence, NS; Davis, J; Compton, RG.

    In: ANALYST, Vol. 127, No. 1, 01.2002, p. 8-10.

    Research output: Contribution to journalArticle

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    AB - 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 muM to 50 muM with a corresponding limit of detection of 2 muM (based on 3s(b)). 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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    Wain AJ, Lawrence NS, Davis J, Compton RG. Ultrasonic extraction of iron from non-aqueous liquids. ANALYST. 2002 Jan;127(1):8-10.