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x射线光谱法已成功地应用于测定工业产品中的贵金属。其分析的准确度和再现性不亚于化学法。然而由于此方法的灵敏度低(Cnp Au=0.005％,Cnp Ag=0.01％)在微量分析时采用了各种预浓缩手段。 从方法的快速性和简便性来看,吸附法最引人注意。最近为了选择浓缩金和其它贵金属研制了大量的聚合螯和吸附剂,这些吸附剂能从大量的非贵金属元素中使微量的贵金属分离出来。螯合吸附剂浓缩
X-ray spectrometry has been successfully applied to the determination of precious metals in industrial products. The accuracy and reproducibility of the analysis is no less than the chemical method. However, due to the low sensitivity of this method (Cnp Au = 0.005%, Cnp Ag = 0.01%) various preconcentration methods are used in the microanalysis. From the point of view of the rapidity and simplicity of the method, the adsorption method is most noticeable. Recently, a large number of polymeric chelating adsorbents have been developed for the selection of concentrates and other precious metals that can separate trace amounts of precious metals from a large number of non-noble metal elements. Chelating adsorbent concentration