摘要
Magnetic polyethyleneimine chelating resin (PEI2) wasprepared. Its average diameter was 0. 44mm and it contained magnetic particles over 11% of the microcapsules after it had been treated with 8% hot HC1. The results showed that the reaction media had significant effect on physical forms, magnetic particles content and stability in acid of the microcapsules. PEF2 had very high adsorption capacity to Au3+ , Pd2+ and Hg2+ , and little one tmvards Mg2+, Pb2+ and Cu2+. It was discovered that PEI2 could reduce Au3+ into elemental gold.
Magnetic polyethyleneimine chelating resin (PEI2) wasprepared. Its average diameter was 0. 44mm and it contained magnetic particles over 11% of the microcapsules after it had been treated with 8% hot HC1. The results showed that the reaction media had significant effect on physical forms, magnetic particles content and stability in acid of the microcapsules. PEF2 had very high adsorption capacity to Au3+ , Pd2+ and Hg2+ , and little one tmvards Mg2+, Pb2+ and Cu2+. It was discovered that PEI2 could reduce Au3+ into elemental gold.
