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本文首次用三(2-乙基己基)氧膦(TEHPO)作固定相,研究了贵金属反相萃取纸色层及柱色层的分离。通过实验,考察了50多种金属离子在TEHPO-HCI体系中的纸色层行为,发现此体系对贵金属的选择性较好。萃取能力的顺序为:AuCl_1~->OsCl_2~(2-)>IrCl_8~(2-)>PtCl_6~(2-)>PdCl_4~(3-)>RhCl_8~(3-)。
In this paper, the separation of paper color layer and column color layer by reversed-phase noble metal extraction was studied for the first time using tris (2-ethylhexyl) phosphine oxide (TEHPO) as the stationary phase. Experiments were conducted to investigate the paper color behavior of more than 50 kinds of metal ions in TEHPO-HCI system. It was found that the selectivity of this system to noble metals is good. The extraction order of AuCl_1 ~ -> OsCl_2 ~ (2 -)> IrCl_8 ~ (2)> PtCl_6 ~ (2)> PdCl_4 ~ (3)> RhCl_8 ~ (3-).