火试金富集-火焰原子吸收光谱法测定复杂矿样中的微量金

Determination of Trace Gold Content in Complex Ore Samples by Flame Atomic Absorption Spectrometry with Fire Assay Preconcentration

复杂矿样经火试金法富集后，贵金属合粒用HNO3、HCl溶解，再用火焰原子吸收光谱法测定金量。该方法干扰少、稳定性好、精密度高，加标回收率为97．8％～100．5％。

The complex ore samples were enriched by fire assaying method, then precious metal alloy particles were dissolved with HNO3 and HC1 solution, and trace gold was determined by FAAS. This method is of less interference, good stability,high precision. The recovery of standard addition is 97.8% -100. 5%.