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Preconcentration of noble metals on a polymer support as complexes of organic reagents and their subsequent determination in the solid phase

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Abstract

Conditions of the sorption preconcentration of Pt, Pd, Au, Ag, and Hg as colored complexes of azorhodanines, tyrodine, and sulfonitrophenol M from acidic solutions (pH 0–2) on a polyamide membrane in the flow mode are determined. At a flow rate of 10–20 mL/min, concentrations of determined elements of 10-9-10-7 M, and pressure of 10–20 mm Hg, the complexes are nearly quantitatively sorbed on a polyamide membrane disk (d = 1 cm,m = 2.7 mg, andl = 0.1 mm). The influence of the composition of the test solutions on the formation of the analytical signal in the solid phase is studied. Rapid sorption-spectrometric procedures are developed for the determination of Pt, Pd, Au, Ag, and Hg with the detection limit 5–30 ng of the element in the sorbent zone

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Authors and Affiliations

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

    R. F. Gur’eva & S. B. Savvin

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  1. R. F. Gur’eva
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  2. S. B. Savvin
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Gur’eva, R.F., Savvin, S.B. Preconcentration of noble metals on a polymer support as complexes of organic reagents and their subsequent determination in the solid phase. J Anal Chem 55, 249–254 (2000). https://doi.org/10.1007/BF02757208

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  • DOI: https://doi.org/10.1007/BF02757208

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