The organic phase containing tetra(2-ethylhexy)diglycolamide (TEHDGA) and n-dodecane (n-DD) was irradiated to various absorbed dose levels in a 60Co gamma irradiation chamber. The organic phase subjected to irradiation was classified in to four different categories. The extraction behavior of Nd(III) from nitric acid was studied in the degraded solution of 0.2 M TEHDGA/n-DD and the reverse micellar aggregation behavior of the extracted phase was probed by dynamic light scattering technique and ATR-FTIR spectroscopy. The results revealed that the concentration of TEHDGA decreased upon irradiation and minimized the aggregation in organic phase. The presence of n-DD along with TEHDGA during irradiation enhanced the degradation of TEHDGA, due to sensitization effect. In contrast to the assumption of deteriorating effect of gamma radiation on organic phases, the study showed that the radiolytic degradation of TEHDGA/n-dodecane minimized the aggregation and threw the third phase formation limit of Nd(III) in aqueous phase to higher values.

中文翻译：

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三价金属离子萃取过程中辐射降解四(2-乙基己基)二甘醇酰胺在正十二烷介质中聚集行为的研究

含有四（2-乙基己基）二甘醇酰胺 (TEHDGA) 和正十二烷 (n-DD) 的有机相在 60Co γ 辐照室中被辐照至各种吸收剂量水平。经受辐照的有机相分为四种不同的类别。在 0.2 M TEHDGA/n-DD 的降解溶液中研究了从硝酸中提取 Nd(III) 的行为，并通过动态光散射技术和 ATR-FTIR 光谱探测了提取相的反胶束聚集行为。结果表明，TEHDGA 的浓度在辐照后降低，并使有机相中的聚集最小化。由于敏化作用，在辐照过程中 n-DD 和 TEHDGA 的存在增强了 TEHDGA 的降解。