用正辛基硫醇与１，２－二溴乙烷合成双（正辛基硫代）乙烷，继而制得双（正辛基亚磺酰）乙烷（ＢＯＳＥ）．研究题示试剂用于溶剂萃取铂的性能和机理．实验表明，在ＫＩ存在下２～６ｍｏｌ／Ｌ盐酸介质，ＢＯＳＥ—乙酸丁酯能定量萃取铂（Ⅳ）．研究萃取与反萃取的最佳条件，ＩＣＰ—ＡＥＳ分析表明常见贱金属离子不被萃取，一定量的贵金属离子不干扰（除钯外）．斜率法测得萃合物的组成为ＰｔＩ２（ＢＯＳＥ），红外光谱指出ＢＯＳＥ的亚砜硫原子与Ｐｔ（Ⅱ）配位，萃合物为一混型配位络合物．提出一种铂与普通金属和贵金属（除钯外）的分离方法 Bis (n-octylthio) ethane was synthesized with n-octylmercaptan and 1,2-dibromoethane followed by bis (n-octylsulfinyl) ethane (BOSE). The research shows the performance and mechanism of reagents for solvent extraction of platinum. Experiments show that in the presence of KI 2 ~ 6mol / L hydrochloric acid medium, BOSE-butyl acetate can be quantitative extraction of platinum (Ⅳ). The optimum conditions for extraction and stripping were studied. ICP-AES analysis showed that common base metal ions were not extracted, and a certain amount of noble metal ions did not interfere (except for palladium). The composition of the extract was PtI2 (BOSE) measured by the slope method. The infrared spectroscopy indicated that the sulfoxide sulfur atom of BOSE was coordinated with Pt (Ⅱ), and the complex was a mixed coordination complex. A method for the separation of platinum from normal and noble metals (excluding palladium) is proposed