论文部分内容阅读
本工作利用长链仲碳伯胺N_(1923)作为铂族元素的萃取剂,研究了在0.06—5.0mol/LHCl体系内,各种稀释剂、萃取剂浓度、酸度、萃取平衡时间以及添加氧化剂等因素对Os、Ir、Au等元素萃取率的影响,并与叔胺N_(235)的萃取性能作了比较。在示踪实验基础上,提出了从地质样品中分离铂族元素的化学流程,并结合中子活化测定了国际地层界线参考样品DINO和Contessa中的部分铂族元素的含量。萃取法的结果与螯合离子交换树脂法的结果基本相符。
In this work, long-chain secondary amines N_ (1923) was used as the extractive agent of platinum group elements. The effects of various diluents, extractant concentration, acidity, extraction equilibrium time, and addition of oxidants in 0.06-5.0 mol / And other factors on the extraction rate of Os, Ir, Au and other elements, and compared with the extraction of tertiary amine N_ (235). Based on the tracer experiments, the chemical process of separating platinum group elements from geological samples was proposed, and the content of some platinum group elements in reference samples DINO and Contessa of international stratigraphic boundaries was determined by neutron activation. The results of the extraction method and the chelating ion exchange resin method basically consistent with the results.