- 作者: 鄭政峰 ; 傅政堂
- 作者服務機構: 中興大學化學系
- 中文摘要: A method to preconcentrate metal ions employed an anion-exchange resin was studied. Metal ions were first chelated with ethylenediaminetetraacetic acid (EDTA), then trapped on an enrichment column packed with anion-exchange resin. The major interfering ions, e.g. calcium and magnesium were excluded from enrichment by appropriate adjustment of pH. Desorption of the trapped metals was effected by elution with HCl (0.1 M). Recoveries of Cu/sup 2+/, Ni/sup 2+/, Co/sup 2+/, Pb/sup 2+/, Zn/ sup 2+/ reached 99%. By comparison with preconcentration methods using cation-exchange resin, this method has the advantages of selectivity, quantitative recovery, small cost of operation, and simple procedure.
- 英文摘要: --
- 中文關鍵字: Preconcetration; Anion-Exchange Resin; Metal Ion; Chelation; Ethylenediaminetertraacetic Acid
- 英文關鍵字: 預濃縮;陰離子交換樹脂;金屬離子;鉗合作用;乙二胺四乙酸