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KMID : 1059519870310030231
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Journal of the Korean Chemical Society
1987 Volume.31 No. 3 p.231 ~ p.235
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New Analytical Method for Separation and Identification of Heavy Metals (I)
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Kim Youn-Doo
Bae Jun-Heon
Shin Young-Kook
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Abstract
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In 10M chloride (4M HCl + 6M LiCl) solution, cobalt, but not nickel, formed complex anion (CoCl3-), and this anion was extracted by a liquid anion exchanger with Amberlite LA-2. The ion exchange capacity was 2.175meq of cobalt complex per unit ml of Amberlite LA-2. Upon eluting the resin with 0.4M nitric acid, the cobalt complex was stripped and transfered into eluate quantitatively. By using this separation method in the chloride solution dissolved with 50mg of cobalt (Ⅱ) and 500mg of nikel(Ⅱ), recovery of cobalt were 99.6 percent.
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KEYWORD
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