Determination of zinc in ore by the use of anion exchange resin

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Other Title
  • 陰イオン交換樹脂による鉱石中の亜鉛の定量
  • インイオン コウカン ジュシ ニ ヨル コウセキ チュウ ノ アエン ノ テイリョウ

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Description

In order to simplify and speed up the determination of zinc in ore, the authors have developed method which involves the use of an anion exchanger (Amberlite IRA-410) for the separation of zinc from other elements, and the use of EDTA in the succeeding titration. A ver ygood adsorption of zinc is obtained in 0.12N HCl containing 100 g of NaCl per liter. In order to elute the zinc quantitatively, a solution of 1N NH4OH containing 20 g of NH4Cl per liter is passed through the column of resin. Metals often associated with Zn in ore, such as Fe, Cu, Mn, Al, and alkaline earths, are not adsorbed on the resin in the HCl-NaCl medium. Although Pb is adsorbed on the resin, can be removed by the usual method. Less than 50 mg of Cd does not interfere with the titration if a small amount of sodium diethyl-dithiocarbamate is added. In general, the ores can be analysed by this method with reliable results (see Table 9). The time required for the analysis is about 45 hours.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 8 (4), 235-239, 1959

    The Japan Society for Analytical Chemistry

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