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应用我们合成的叔胺泡沫,研究了萃取铂离子的行为,比较了不同介质、酸度等条件对萃取效率的影响,考察了四十余种金属离子的干扰和抑制措施,确定了分析测定的条件,并成功地应用于矿样中微量铂的分析测定。建立了一个简便、快速、准确、经济和对环境污染小的测定地质样品中微量铂的新方法。样品分析测定方法,样品经600℃灼烧,王水分解,用100ml 10% H_3PO_4溶液浸取,加1g NH_4Br和一块(约0.3g)叔胺泡沫,振荡萃取30分钟。
The effects of different media, acidity and other conditions on the extraction efficiency were studied by using our synthetic tertiary amine foam. The interferences and inhibitions of more than 40 kinds of metal ions were investigated, and the conditions for the analysis and determination , And has been successfully applied to the determination of trace platinum in ore samples. A new method for the determination of trace platinum in geological samples is established, which is simple, rapid, accurate, economical and less polluting to the environment. Sample analysis and determination method, the sample after burning at 600 ℃, aqua regia, with 100ml 10% H_3PO_4 solution leaching, add 1g NH_4Br and a piece (about 0.3g) tertiary amine foam, the oscillation extraction 30 minutes.