Volume 8, Issue 2 (February 2011)

    Spectrophotometric Determination of Iron in Pharmaceutical and Water Samples by Interacting with 5-(4-Nitrophenylazo) Salicylic Acid and Eosin

    (Received 24 March 2010; accepted 24 November 2010)

    Published Online: 2010

    CODEN: JAIOAD

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    Abstract

    A highly stable ternary complex of iron(III) with 5-(4-nitrophenylazo) salicylic acid (NPAS) and Eosin (Es) in acidic medium at room temperature gave a maximum absorption at 545 nm with a molar absorptivity 2.81×104 L mol−1 cm−1. A spectrophotometric method using these ligands was developed and optimized in terms of pH, stability of the complex, amount of reagent required, sensitivity, linearity, and the effect of various foreign ions was studied. The linear range for iron(III) determination is 0.18–6.0 mg L−1. The method was sensitive, accurate, and all the reagents were stable under the working conditions. Moreover, the method was easy to perform for the determination of iron in pharmaceutical and water samples.


    Author Information:

    Hashem, E. Y.
    Chemistry Dept., Faculty of Science, Assiut Univ., Assiut,

    Seleim, M. M.
    Deceased, Chemistry Dept., Faculty of Science, Assiut Univ., Assiut,

    El-Zohry, Ahmed M.
    Chemistry Dept., Faculty of Science, Assiut Univ., Assiut,


    Stock #: JAI103098

    ISSN: 1546-962X

    DOI: 10.1520/JAI103098

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    Author
    Title Spectrophotometric Determination of Iron in Pharmaceutical and Water Samples by Interacting with 5-(4-Nitrophenylazo) Salicylic Acid and Eosin
    Symposium , 0000-00-00
    Committee E55