Influence of tartrate ions on the coprecipitation of some trace metal inner complex compounds with bis(8-quinolyl)disulphide |
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Authors: | Magnuss Vircavs |
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Institution: | (1) Nuclear Research Centre of Latvian Academy of Sciences, 31, Miera st., LV-2169 Salaspils, Latvia;(2) Board of Environment Impact Assessment, Ministry of Environmental Protection and Regional Development of Latvia, 25 Peldu st., LV-1494 Ríga, Latvia |
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Abstract: | The coprecipitation of Fe(III) quinoline-8-thiolate (QT) with bis (8-quinolyl) disulphide has been investigated with 1 mol × dm–3 potassium tartrate and 0.001 mol × dm–3 aqueous tartaric acid solutions in dependence on their pH. In return QTs of Cu(II), Cd(II) and Hg(II) have been coprecipitated from 0.2, 0.1, 0.01 and 0.001 mol × dm–3 aqueous solutions of tartaric acid after adjusting the pH to 6–7. These tartaric acid concentrations relate to their initial concentrations before the coprecipitation. The presence of tartrate ions influences the recovery of the coprecipitated Fe(III), Cd(II) and Hg(II) QTs. A complete coprecipitation of the Cu(II) inner complex compound can be achieved from the aqueous solutions indicated. |
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