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Test Determination of Cu(II), Ni(II), and Cr(VI) in a Single Sample

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Abstract

It was shown that Cr(VI), Ni(II), and Cu(II) can be simultaneously adsorbed on a solid phase consisting of two filled fibrous disks and then determined visually using organic reagents. One sorbent disk, a fibrous material filled with an AB-17 anion exchanger, was used to determine chromium by its reaction with 1,5-diphenylcarbazide. Another disk filled with an KU-2 cation exchanger was used for the simultaneous sorption of copper and nickel followed by the consecutive determination of nickel with dimethylglyoxime and copper with sodium diethyldithiocarbamate. The conditions were optimized for the determination of nickel in the presence of copper and of copper in the presence of nickel after decomposing its dimethylglyoxime complex with 1 M HCl. The detection limits were 0.02, 0.1, and 0.05 mg/L for Cr, Ni, and Cu, respectively. The time of analysis was no longer that 20 min.

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Authors and Affiliations

  1. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 117975, Russia

    V. P. Dedkova, O. P. Shvoeva & S. B. Savvin

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  1. V. P. Dedkova
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  2. O. P. Shvoeva
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  3. S. B. Savvin
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Dedkova, V.P., Shvoeva, O.P. & Savvin, S.B. Test Determination of Cu(II), Ni(II), and Cr(VI) in a Single Sample. Journal of Analytical Chemistry 56, 758–762 (2001). https://doi.org/10.1023/A:1016745929604

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  • DOI: https://doi.org/10.1023/A:1016745929604

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