ICP-OES determination of traces of Ru, Au, V and Ti preconcentrated and separated by a new poly(epoxy-melamine) chelating resin from solutions |
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| Authors: | Xi-Jung Chang Bo-Lin Gong Zhi-Xing Su Dong Yang and Xing-Yin Luo |
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| Institution: | (1) Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China, CN;(2) Department of Chemistry, Ningxia University, Yinchuan 750021, P. R. China, CN |
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| Abstract: | A new poly(epoxy-melamine) chelating resin is synthesized from epoxy resin and used for the preconcentration and separation
of traces of Ru(III), Au(III), V(V) and Ti(IV) ions from sample solutions. The ions analyzed can be quantitatively enriched
by the resin at a flow-rate of 2 mL/min at pH 4, and quantitatively desorbed with 10 mL of 1 mol/L HCl + 0.2 g CS(NH2)2 at a flow-rate of 1 mL/min with recoveries of over 97%. The chelating resin can be reused 7 times without obvious loss of
efficiency. Thousand-fold excesses of coexistent ions caused little interference during the enrichment and determination steps.
The RSDs for the determination of 50 ng/mL Ru(III) and Au(III), 5.0 ng/mL V(V) and Ti(IV) were in the range of 1.5–4.5%. The
recoveries of added standards in a real sample solution are between 96% and 100%, and the results for the ions analyzed in
a nickel alloy sample are in good agreement with their reported values.
Received: 12 May 1997 / Revised: 1 September 1997 / Accepted: 9 October 1997 |
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