众所周知,对于组分复杂的合金中微量稀土(铈)的测定必须经过分离富集的程序,如铜试剂沉淀分离或 PMBP-萃取分离等。但这些方法不仅手续烦多,且易污染环境。近几年来设法改进的研究较多,如资料使用半二 It is well known that the determination of trace rare earths (cerium) in complex alloys requires separation and enrichment procedures such as copper reagent precipitation or PMBP-extraction. However, these methods are not only troublesome procedures, and easy to pollute the environment. In recent years, more efforts have been devoted to improving such data as half of the data