8-羟基喹啉-酚酞-改性聚氨酯泡沫塑料分离富集水中微量镉的研究

Preconcentration and Determination of Trace Cd(Ⅱ) in Water Samples Using 8-Hydroxyquinoline-Phenolphthale in Loaded Foam

本文研究了8-羟基喹啉-酚酞负载在开孔聚氮酯泡沫塑料上,用于水样中痕量镉的富集和原子吸收法测定.考察了振荡平衡时间(或流速),水相酸度和干扰元素的影响,提出一种新的快速富集-AAS方法.水样中痕量镉可定量回收.

Open-cell polyurethane foam loaded with 8-hydroxyquinoline-phenlphthalein was used for the preconcentration of trace Cd (Ⅱ)in water and its atomic absorption determination. The effects of the oscillation equilibrium time (or flow-rate) ,the pH of aqueous phase and the foreign ions on the extraction were examined. A new rapid technique for preconcentration and AAS deten-nination was dereloped for trace Cd(Ⅱ) in water samples.