双硫腙-四氯化碳萃取法野外测定矿石中的银

Field determination of silver in the ore by iphenyl thiocarbazone-carbon tetrachloride extraction

矿石样品用氯化铵和氯化钠熔融分解后,用稀盐酸浸出银,在掩蔽剂存在下,调节pH值,用双硫腙-四氯化碳溶液萃取比色测定。通过在矿区野外现场实验结果表明,该方法测定矿石中的银,具有经济、快速、准确、易于掌握等特点。

The ore sample was liquated by ammonium chloride-sodium chloride and silver in sample was leached by dilute hydrochloric acid. With the present of masking agent, silver was determined with extraction and colorimetric estimation method by diphenyl thiocarbazone-carbon tetrachloride mixed solvent. Field application showed that this method was economical, quick precise and easy to operate.