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从大量的金属及基体金属中富集并分离微量重金属元素是分析中十分关注的内容之一。寻找富集倍数大、分离效率高、无二次污染的分离手段更是十分感兴趣的课题。本工作探讨了利用巯基棉纤维素富集并分离重有色金属中微量银(Ⅰ)的可能性。试验找到了最佳分离条件:在pH 8～4.0N硝酸介质中,用巯基棉纤维素定量吸附银(Ⅰ),其饱和吸附量0.42毫当量/克巯基棉纤维
Enrichment and separation of trace heavy metal elements from a large number of metals and matrix metals is one of the most interesting aspects of the analysis. It is a topic of great interest to find a means of separation with a large multiplication factor, high separation efficiency and no secondary pollution. This work explored the possibility of enriching and separating trace silver (I) in heavy nonferrous metals by using thiol cotton fiber. The optimum conditions for the separation were found in this paper: silver (Ⅰ) was quantitatively adsorbed on thiosemicellulose in pH 8 ~ 4.0N nitric acid medium, and its saturated adsorption capacity was 0.42 meq /