本试验确立的聚三氟氯乙烯—磷酸三丁酯(1:0.6)为固定相,反相萃取色层分离富集、石墨炉原子吸收法测定矿石中痕量金的分析方案,在选定的条件下,基本上无背景吸收和共存元素的影响。实测绝对灵敏度为8.9×10~(12)克/1％吸收;检出限为1.1×10~(-4)克/吨、定量测定下限为2.2×10~(-4)克/吨; The experimental determination of polychlorotrifluoroethylene - tributyl phosphate (1: 0.6) as the stationary phase, reversed-phase extraction chromatography separation and enrichment, graphite furnace atomic absorption spectrometry for the determination of trace gold in the ore analysis program, selected Of the conditions, basically no background absorption and the impact of co-existing elements. The measured absolute sensitivity was 8.9 × 10 ~ (12) g / 1% absorption. The detection limit was 1.1 × 10 -4 g / t and the lower limit of quantitation was 2.2 × 10 -4 g / t.