Separation of traces and minor amounts of lead from large amounts of zinc, indium, gallium and other elements on a low cross-linked anion-exchange resin
✍ Scribed by F.W.E. Strelow
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 385 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Lead is separated from gram amounts of Zn, In, Ga, Fe(III), Cu(II), Co(II), Mn(II), U(VI), Ca and Ba on a short column of AGl-X4 anion-exchange resin in the bromide form. Lead is retained from 0.2 M hydrobromic acid while the other elements are eluted completely with this reagent. Lead is then eluted with 2 M nitric acid. Separations are sharp and quantitative and, especially for gram amounts of zinc, much better than those obtained with an 8% cross-linked resin; up to 10 mg of lead can be separated from 2 g of zinc. Results are given for synthetic mixtures and lead is determined in several analytical grade chemicals.