【摘要】 研究了在硫氢酸铵存在下用 P₅₃₈环己烷溶液对 B_i（Ⅲ）的萃取行为.由实验数据计算了 B_i（Ⅲ）与 SCN-之间络合平衡的各级稳定常数.测定了 P₅₃₈—B_i（Ⅲ）—NH₄SCN 萃取体系的吸收光谱.讨论了萃取机理,并认为是离子交换机理.更多还原

【Abstract】 Extraction behaviour of Bi（Ⅲ）by P₅₃₈-cyclohexane solution in presence ofNH₄SCN is investigated.From the experimental data,stepwise formation constants ofeomplexing equilibria between Bi （Ⅲ） and SCN-were obtained.Spectra of P₅₃₈-Bi（Ⅳ）-NH₄SCN extraction system were measured.Extraction mechanism is discussedand regarided as ion-exchage mechanism.更多还原