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Use of Silica Gel Chemically Modified with Mercapto Groups for the Extraction, Preconcentration, and Spectroscopic Determination of Palladium

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Abstract

Silica gel chemically modified with mercaptopropyl groups is proposed for the extraction and preconcentration of palladium. This silica gel extracts palladium(II) at an acidity from 6M HCl to pH 4 with distribution ratios at a level of n× 104 g/cm3. Hyphenated procedures for the adsorption–photometric determination of palladium with detection limits of 0.1 μg/0.1 g of the adsorbent have been developed. The procedure includes the adsorption preconcentration of palladium, elution by hot (50 ± 5°C) 8% thiourea in 1M HCl, and atomic absorption determination of palladium in the eluate (detection limit is 0.05 μg/mL). The procedures were applied to the determination of palladium in standard reference samples of copper–nickel ore and copper concentrate.

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Authors and Affiliations

  1. Kristall Research and Engineering Center, pr. Svobodnyi 79, Krasnoyarsk, 660041, Russia

    V. N. Losev, Yu. V. Kudrina & N. V. Maznyak

  2. Shevchenko National University, Kiev, ul. Vladimirskaya 64, Kiev, 01033, Ukraine

    A. K. Trofimchuk

Authors
  1. V. N. Losev
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  2. Yu. V. Kudrina
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  3. N. V. Maznyak
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  4. A. K. Trofimchuk
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Losev, V.N., Kudrina, Y.V., Maznyak, N.V. et al. Use of Silica Gel Chemically Modified with Mercapto Groups for the Extraction, Preconcentration, and Spectroscopic Determination of Palladium. Journal of Analytical Chemistry 58, 124–128 (2003). https://doi.org/10.1023/A:1022345702703

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  • DOI: https://doi.org/10.1023/A:1022345702703

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