加速离子的流洗色谱分离研究(Ⅰ)——Cu(Ⅱ)-氯合离子的加速作用

Study on Accelerative Ion Exchange Elution Separation(Ⅱ)——Accerative Effect Exerted by Cu(Ⅱ)-Chloro Complex Ion

前报曾报导了Mn(Ⅱ)的加速效应。此后又肯定了这一效应的普遍性及应用于流洗色谱的可能性。本文发现了4N HCl中的CuCl_(x)^(x-2)-是一种有效的加速离子,可以改善U(Ⅵ)的色谱床效,以此实现了U(Ⅵ)、Ti(Ⅳ)和Fe(Ⅲ)的色谱分离。按文献[2],以~t作图,对理想的色谱图,可得到对称的一对直线,相交于S处,在络合色谱中,前沿属快扩散组份,偏离平衡的程度Q小,容易得到直线.

It was discovered that Cu(Ⅱ)-chloro complex ion appears accelera-tive effect to improve the chromatographic column effenciency of U(Ⅳ)species.For evaluating chromatographic characteristic was suggested a√InC0/C^(1)~t graphic method by which the accelerative effect of Cu(Ⅱ)-chloro ion under different conditions was discussed.Finally,the chromatographic separation of U(Ⅳ),Ti(Ⅳ)and Fe(Ⅲ)was realized by the help of the accelerative effect of Cu(Ⅱ)-chloro ion.