| H2O2-HCl was used to decompose the sample, and a separation and enrichment process with combination of adsorption materials was established. The conditions of the enrichment of the combination enrichment agent were discussed in detail. Improved the noise ratio and the weak signal detection capability of the instrument by improving spectral buffer, using small electrode quick exposure technology and developing phase plate measurement system for the spectral analysis of precious metals. The method is simple, high efficiency, and low cost. Detected limit (3σ) Au as 0.1 ng/g, Pt as 0.2 ng/g, and Pd as 0.1 ng/g, the method was applied to measure National PGE geochemistry a standard substance of Au, Pt, Pd, the results are consistent with the standard value, and the relative standard deviation (RSD) of 12-times results is less than 27.1%. The method is suitable for determination of Au, Pt, Pd in various types of ore samples, which serves regional geochemical survey to meet the same quality requirements. And in different sizes, levels and sampling density areas, it can achieve satisfactory results applied to the national platinum palladium geochemical exploration. |