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目前镧系元素中单个稀土的化学测定通常是将其分离后进行,而这种分离有很大困难.科学院应化所等曾对稀土的反相萃取色谱法进行过研究.我们在此工作经验的基础上,对钐钴合金中钐、钆、钬进行反相萃取色谱分离和测定,得到了满意的结果.一、试剂与装置硅烷化多孔微球硅胶(160～200目):多孔微球硅胶经硅烷化处理;2-乙基己基磷酸2-乙基己基酯(简称P-507):经萃洗法净化;
At present, the chemical determination of a single rare earth element in lanthanides is usually carried out after the separation, and this separation is very difficult. The Institute of Applied Chemistry has conducted a study of reversed-phase extraction chromatography of rare earths. Based on the samarium-cobalt alloy samarium, gadolinium, holmium reversed-phase extraction chromatographic separation and determination, and obtained satisfactory results.A reagent and device Silanized porous microspheres silica gel (160 ~ 200 mesh): porous microspheres Silica gel silylation; 2-ethylhexyl phosphate 2-ethylhexyl ester (referred to as P-507): purified by the extraction method;