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Issue 12, 1987
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Spectrophotometric determination of cobalt(II) in vitamin preparations, alloys and ores using phenanthraquinone monothiosemicarbazone

Abstract

Phenanthraquinone monothiosemicarbazone forms a brown 1 : 3 (metal : ligand) complex with cobalt(II). The complex is soluble in a water-methanol medium. The reagent has been used for the spectrophotometric determination of cobalt(II). The cobalt(II) complex has a maximum absorption at 500 nm with a sensitivity of 0.0048 µg cm–2 for log l0/l= 0.001. The optimum concentration range for the determination of CoII is 0.8–4.0 p.p.m. over the pH range 6.8–8.5. The method has been used for the determination of cobalt(II) in a vitamin preparation, an alloy and an ore.

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Article type: Paper
DOI: 10.1039/AN9871201771
Citation: Analyst, 1987,112, 1771-1772
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    Spectrophotometric determination of cobalt(II) in vitamin preparations, alloys and ores using phenanthraquinone monothiosemicarbazone

    R. K. Sharma, Sahadev and S. K. Sindhwani, Analyst, 1987, 112, 1771
    DOI: 10.1039/AN9871201771

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