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The extraction behavior of trace Am(Ⅲ)and Eu(Ⅲ) from nitrate medium with HEHEHP in kerosene was studied.LgD/pH and lgD/[H2A2] dependence plots are given.Calculated values of lgKex for Eu,Nd and Am are-0.13±0.08,-1.36±0.10,-1.89±0.18,respect