30%TBP-煤油-HNO<sub>3</sub>体系的α辐解行为Ⅱ.溶剂辐解生成羰基化合物的规律

30%TBP-煤油-HNO₃体系的α辐解行为Ⅱ.溶剂辐解生成羰基化合物的规律

摘要: 以分光光度法研究了²³⁸Pu 为α源的30%TBP-煤油-HNO₃体系辐解产物羰基化合物的生成规律，考察了还原反萃、酸碱洗涤、钚浓度等工艺条件对羰基化合物分析的影响。研究表明：羰基化合物生成量随着α辐照剂量率以及吸收剂量的增加而增大，在剂量率73.7 Gy/min、吸收剂量5×10⁵ Gy时，羰基化合物浓度达到0.039 mol/L；吸收剂量在10⁵ Gy以上时，α辐照产生的羰基化合物生产量明显高于γ辐照；不同稀释剂对羰基化合物生成量影响不明显。

Abstract: The property of carbonyl compounds in the extraction system of 30%TBP-kerosene-HNO₃ that irradiated using ²³⁸Pu α-sources were determined by spectrophotometry. And effects of different backextractant, wash process and plutonium concentration were investigated. Results show that the concentration of carbonyl compounds increases with absorbed dose and dose rate, when absorbed dose is 5×10⁵ Gy and dose rate is 73.7 Gy/min, the concentration of carbonyl compounds obtains to 0.039 mol/L. When the radiation dose is less than 10⁵ Gy, the concentration of carbonyl compounds in irradiated system by α irradiation is close to by γ irradiation. But when the radiation dose is more than 10⁵ Gy, the concentration of carbonyl compounds in system by α irradiation increases more rapid than by γ irradiation.