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本文以PMBP/苯萃取试液中微量钍、偶氮胂Ⅲ显色测定钍含量的条件试验,得出萃取时PH值以1.6～2.0为好,反萃取时以6mol/L HCI下进行较合适。
In this paper, the determination of thorium content of trace thorium and arsenazo Ⅲ in PMBP / benzene extraction test solution was tested. The results showed that the optimum pH value was 1.6 ~ 2.0 for extraction and 6mol / L HCl for stripping .