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在自然界中贵金属元素通常含量很低,在花岗岩矿石中一般只有零点几个ppm。其中Os,Ru,Rh,Ir更少,只有几个ppb。因此对微量贵金属元素的测定,需要一种灵敏的分析方法。中子活化分析法是一种很理想的方法,但中子辐照后要进行分离以除去大量的贱金属元素,G.Koster等人合成了含有 功能团的螯合树脂后,G.H.Morrison等人在贵金属中子活化分析中使用此类牌号为Srafion NMRR的螯合树脂,使复杂的放化分离简化为一步分组分离,结合使用高分辨率Ge(Li)探测器测定各贵金属元素的含量,可用于环境样品中七种贵金属元素的同时测定。S.B.Sawin和О.П.Швоева分别用光谱法和放射性示踪法对贵金属元素在各种螫合树脂上的浓集和分离进行研究后认为,具
In nature, precious metal elements are usually low in content, typically only a few ppm in granite ores. Among them Os, Ru, Rh, Ir are fewer, only a few ppb. Therefore, the determination of trace precious metal elements, the need for a sensitive analytical method. Neutron activation analysis is a very good method, but after the neutron irradiation to be separated to remove a large number of base metal elements, G. Koster et al synthesis of functional groups containing chelating resin, GHMorrison et al The use of such chelating resins as Srafion NMRR in precious metal neutron activation assays simplifies complex radiochemical separation into one-step grouping, combined with the use of a high resolution Ge (Li) detector to determine the content of each precious metal element, Simultaneous Determination of Seven Precious Metals in Environmental Samples. S.B.Sawin and О.П.Швоева respectively using spectroscopy and radioactive tracing of precious metal elements in a variety of resin concentration and separation on the resin that with