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本文研究了苯基硫脲（ＰＴＵ）－磷酸三丁酯（ＴＢＰ）－醋酸丁酯体系对Ｐｔ（Ⅳ）的萃取作用，发现在１～６ｍｏｌ／ＬＨＣｌ介质中，若先使Ｐｔ（Ⅳ）与ＰＴＵ（６ｍｏｌ／ＬＨＣｌ溶液）在水相中反应，然后用ＴＢＰ－醋酸丁酯溶液萃取，则铂可被定量萃取至有机相中。用斜率法测得萃合物的组成为Ｐｔ：ＰＴＵ：ＴＢＰ＝１：１：２，借助吸收光谱和红外光谱探讨了萃合物的可能结构，并对协同萃取机理进行了讨论。
In this paper, the extraction of Pt (Ⅳ) from phenylthiourea (PTU) -butyrate (TBP) -butyl acetate system was studied. It was found that Pt (Ⅳ) PTU (6 mol / LHCl solution) is reacted in the aqueous phase and then extracted with TBP-butyl acetate solution, the platinum can be quantitatively extracted into the organic phase. The composition of the extract was determined by the slope method as Pt: PTU: TBP = 1: 1: 2. The possible structure of the extract was discussed by absorption and infrared spectroscopy. The mechanism of the synergistic extraction was also discussed.