论文部分内容阅读
239Pu是通过238U中子活化产生,对于产生的绝对量需要进行分析,本文对其分析方法进行了研究。在借鉴前人研究工作的基础上,开展了TTA萃取分离钚、同位素稀释质谱法分析239Pu的工作。采用氨基磺酸亚铁将镎还原为Np(Ⅳ),用TTA萃取除去Np(Ⅳ),而后用NaNO2将钚氧化至Pu(Ⅳ),再用TTA将钚从大量铀中提取出来。对分出的钚采用质谱法测量239Pu与242Pu的比值,获得239Pu的总量。本工作研究了TTA对U、Pu、混合裂变产物的萃取行为。采用分光光度法分析
239Pu is generated by the activation of 238U neutron, which needs to be analyzed for the absolute amount generated. In this paper, the analytical methods are studied. Based on the previous research work, TTA extraction and separation of plutonium, isotope dilution mass spectrometry analysis of 239Pu work. Naphthalene was reduced to Np (Ⅳ) by ferrous sulfamate, Np (Ⅳ) was removed by TTA extraction, and then plutonium was oxidized to Pu (Ⅳ) with NaNO2. TTA was used to extract plutonium from a large amount of uranium. Mass spectrometry was used to measure the ratio of 239Pu to 242Pu for the separated plutonium to give the total amount of 239Pu. This work studied the TTA extraction of U, Pu and mixed fission products. Spectrophotometric analysis