【摘要】 提出了一个从大量汞和其它干扰元素中分离痕量铂的化学分离程序,且已成功地用于新核素²⁰²Pt的鉴别。照射后的氧化汞靶溶于浓盐酸中,用乙醚多次萃取除去干扰元素铊,在萃取后的水相中加入饱和氯化铵溶液,用氯铂酸为载体,以氯铂酸铵沉淀载带核反应产生的痕量铂。分离过程中汞、金、铊的去污因子及铂的回收率均获得了令人满意的结果。更多还原

【Abstract】 A separation procedure of trace platinum from large amount of mercury and other interference elements is described and it has been successfully applied to the identification of new isotope 202Pt. After irradiation the HgO target was dissolved in concentrated HC1 solution. The thallium fraction was removed by the solvent extraction with ether. In the aqueous phase after extraction the radioisotope of platinum produced by irradiation was precipitated as (NH4)2PtCl6 by adding saturated solution of NH4Cl in the presence of H2PtCl6·6H2O as stable carrier. The decontamination factors from mercury, gold and thallium and the recovery of platinum in the process of separation are satisfactory.更多还原