Favourable conditions have been found for the elution of chloraurate ions, separated from base metals by sorption on Dowex 1. The elution is done at 50 degrees with a hydrochloric acid solution of thiourea. A reversible column is proposed for the purpose, the use of which decreases the eluate volume. The conditions established have been applied in the separation of microgram amounts of gold from nickel, copper and iron as well as for determining gold in anodic copper.
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| http://dx.doi.org/10.1016/0039-9140(73)80212-7 | DOI Listing |
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Desorption of small quantities of chloraurate ions retained on anion-exchangers, in the separation of gold from base metals.
Talanta
September 1973
Department of Chemistry, University of Sofia, Sofia, Bulgaria.
Favourable conditions have been found for the elution of chloraurate ions, separated from base metals by sorption on Dowex 1. The elution is done at 50 degrees with a hydrochloric acid solution of thiourea. A reversible column is proposed for the purpose, the use of which decreases the eluate volume.
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