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本文研究了用二乙基二硫代磷酸作萃取剂时,一些贵金属的萃取行为。文中着重考查了铂在萃取过程中的行为,并研究了萃取的适宜条件。实验表明,由于光化学反应,铂会部分进入有机相,只要避免光照,铂可定量留于水相,根据研究的结果,提出了一个大量钯、银与少量铂、铑、铱萃取分离的方法,方法简便快速。此法能应用于钯、银合金中铂、铑铱的分析。
In this paper, the extraction behavior of some precious metals with diethyl dithiophosphoric acid as extractant was studied. In this paper, the behavior of platinum in the process of extraction is emphatically examined, and the suitable conditions of extraction are studied. Experiments show that due to the photochemical reaction, platinum will partially enter the organic phase. As long as the illumination is avoided, the platinum may be left in the aqueous phase quantitatively. According to the results of the study, a large amount of palladium, silver and a small amount of platinum, rhodium and iridium are extracted and separated. The method is quick and easy This method can be applied to palladium, silver alloy platinum, rhodium iridium analysis.