ORGANIC CHELATING REAGENT ON REDOX ADSORPTION OF ACTIVATED CARBON FIBER TOWARDS Au^(3+)

Organic chelating reagent influences upon the redox adsorption of activated carbon fiber towards Au3+ were systematically investigated. The experimental results indicated that the presence of organic chelating reagent on activated carbon fiber strongly affects adsorption capacity of activated carbon fiber towards Au3+. The reduction-adsorption amount of Au3+ increased three times by the presence of 8-quinolinol. Furthermore, The reduction-adsorption amount of Au3+ depended on the pH value of adsorption and temperature.

利用PAN-3螯合纤维富集分离微量Sb(Ⅲ)和Sb(Ⅴ)的ICP光谱分析

本文建立了利用 PAN-3螯合纤维富集分离微量 Sb(Ⅱ)和 Sb(V)的 ICP-AES 分析法,研究了 PAN-3对 Sb(Ⅲ)和 Sb(Ⅴ)的定量富集酸度、洗脱酸度、富集介质用量和共存离子的干扰及消除.进行了低浓度 Sb(Ⅲ)和 Sb(Ⅴ)的富集、误差统计和样品分析,获得了满意结果.

偕胺肟基纤维对金离子选择吸附性能研究

在试验基础上测试了偕胺肟基纤维在双组分和多组分体系中对Au3+的选择吸附效果,即偕胺肟基纤维表现出了极佳的选择吸附性能。从离子交换和螯合吸附的角度,根据偕胺肟基纤维本身的交联结构和最大氰基转化特点以及金离子本身的结构特点对其高选择吸附性能进行了解析。以红外光谱和X射线衍射等表征方法对吸附反应机理进行了探讨,发现偕胺肟基纤维对Au3+吸附为先螯合吸附然后氧化还原的过程。以反应机理结合偕胺肟基纤维的吸附动力学性能推测这种吸附反应特殊性也决定了偕胺肟基纤维的高吸附性能。