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中文摘要：
本文报道了HClO4体系中,2-甲氨基-5-氯二苯甲酮（R）萃取Pd的机理,考察了ClO-4浓度、Pd2＋浓度和pH对Pd萃取率的影响,确定了萃合物组成为：[Pd·R2]（ClO4）2。
英文摘要：
The extraction mechanism of Palladium from perchloric acid medium by 5-chloro-2-（methylamino）benzophenone（R）is studied.The ClO-4concentration,Pd2＋concentration and the pH value to influence of the extraction rate of Pd are investigated.The composition of the extraction is[Pd·R2]（ClO4）2as determined by slope method.The extraction mechanism of Palladium with 5-chloro-2-（methylamino）benzo-phenone based on UV-spectra is proved to be chelate extraction reaction as follows：2R（O）＋Pb（A）2＋＋2ClO4-4（A）=[Pd·R2]（ClO4-）2（O）.
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