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选用三苯膦萃取色谱柱,在线预浓集与分离地质样品中痕量银.建立了流动注射火焰原子吸收光谱测定的方法“,”Extractive chromatograph using a TPP column was applied to preconcentration and matrix separation for trace silver in geological samples.A flow injection on line method for the determination of silver by flame AAS is described.An enrichment factor of 20 was achieved at a sampling frequeucy of 30 times/h.The precision RSD is 2 0%for the analysis of a geochemical standard reference material(GSD 12,?n=11?) and the detection limit obtained (?3σ?) is 0 02μg/g.