聚氨酯泡沫塑料分离富集在原子吸收光谱法测定水中微量金的应用

Preconcentration and Atomic Absorption Spectrophotometric Determination Of Trace Au (Ⅲ) by Using Foam from Water Samples

研究了８－羟基喹啉＋酚酞负载在开孔聚氨酯泡沫塑料上，应用于水样中痕量金的富集和原子吸收法测定。考察了振荡平衡时间（或流速）、水相的酸度等的影响。提出了一种新的、快速富集－Ａ．Ａ．Ｓ方法，使水样中的微量金可定量回收。

Open-cell polyurethane foam haled with 8-hydroxy quinoline + phenolphalein was used for the preconcentration of trace An (Ⅲ) from water and the atomic absorption determination. The effects of oscillation equilibrium time (or flow-rate) and the PH of aqueous phase on the extraction were examined. A new,efficient technique for preconcentration and AAS determination was developed for trace Au (Ⅲ) in water samples