【摘要】 用Amberlyst A-26大孔阴离子交换树脂分离金(Ⅲ)、铂(Ⅳ)和钯(Ⅱ)。在HAc-NaAc缓冲液中,用易溶于水的显色剂N-烯丙基-N’-(对氨基苯磺酸钠)硫脲(ASATu)和N-间甲苯基-N’-(对氨基苯磺酸钠)硫脲(MMPT)测定。前者测定金(Ⅲ),后者同时测定铂(Ⅳ)和钯(Ⅱ)。该法用于催化剂和阳极泥样品的测定,结果满意。其相对标准偏差(RSD)小于2.4%,回收率在96.0%～98.2%。铂(Ⅳ)和钯(Ⅱ)不需要予先分离可同时测定。更多还原

【Abstract】 Separation of Au(Ⅲ),Pt(Ⅳ) and Pd(Ⅱ) with Amberlyst A-26 macropore anion-exchange resin in solution was carried out.Determination of these ions was proceeded in the medium of an HAc-NaAc buffer solution,with water-soluble color reagents ASATu and MMPT,ASATu was used for the determination of Au(Ⅲ);the MMPT was used for simultaneous determination of Pt(Ⅳ) and Pd(Ⅱ).The method has good selectivity and sensitivity.It can be used for the determination of contents of Au(Ⅲ),Pt(Ⅳ) and Pd(Ⅱ) in catalyst materials and anode mud with satisfactory results.The relative standard deviations(RSDs) were less than 2.4%,and the recoveries(%)were in the range of 96.0%~98.2%.Simultaneous determination of Platinum(Ⅳ) and Palladium(Ⅱ) could be easily achieved without pre-separation.更多还原