论文部分内容阅读
研究了从HNO_3介质中用TOPO预分离铀、钚及PMBP萃取,HNO_3体系反萃分离希土的条件。应用偶氮氯膦-mA显色测定希土总量。提出了用草酸铵抑制钇的吸光度的合适条件,使钇与铈组元素的吸光度趋于一致。用本法实测了辐照后元件中的希土总量并由此计算了元件的燃耗值。其结果与质谱法、放化法所得结果在±2%内符合。本文提供了一个化学法测定燃耗的方法。
The pretreatment of uranium, plutonium and PMBP with TOPO in HNO_3 medium was studied. Application of chlorophosphonazo-mA chromogenic determination of the total amount of Greek soil. A suitable condition for inhibiting the absorbance of yttrium with ammonium oxalate is proposed, and the absorbance of the elements of yttrium and cerium tends to be consistent. Using this method, we measured the total amount of reefs in the irradiated components and calculated the burn-up values of the components. The results of mass spectrometry, radiochemical results obtained within ± 2% in line. This article provides a chemical method to determine burnup.