共沉淀富集分离矿石中微量金、铂、钯

研究了硒、铜、银、砷作为共沉淀剂。富集分离地质样品中金、铂、钯的最佳条件。在3mol/L HCl介质中，以4mg硒和5mg铜、银、砷对金、铂、钯进行共沉淀富集，采用孔雀绿分光光度法测定金．DDO分光光度法测定铂、钯，回收率均在95％-102％之间。通过对含金矿样加入铂、钯标准样品的回收实验，结果令人满意。

The enrichment and separation of race gold, Pt and Pd from the ores based on co-precipitation

The optimal condition of enriching and separating gold, Pt and Pd from gold samples with the selenium, copper, silver and arsenic as the co-precipitant. In the medium of 3mol/L HCl, the gold, Pt and Pd was enriched and separated from gold samples with 4mg of selenium, and 5mg of copper, silver and arsenic respectively. The gold was determined with malachite green spectrophotometric method and the Pt and Pd was determined with DDO spectrophotometric method. The recovery rates were in the range of 95% - 102%. The recovery rate of standard Pt and Pd samples added in the gold-containing samples are satisfactory.