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铅扣用高氯酸分解,氢醌或甲酸在高氯酸铅介质中能定量还原金为单体沉淀.分离后的溶液稀释和放置过夜,氯化银沉淀定量析出.测定金、银沉淀物.铅扣——湿法成功地应用于矿石,精矿及金矿粉尘中金银的分析.经典的火试金法铅灰吹技术对于准确测定矿石、精矿中金,银是不妥的.虽然铅扣能完全富集金、银,但在以后的手续中(如灰吹和硝酸分金)都有损失现象.Lodge
Lead deduction with perchloric acid decomposition, hydroquinone or formic acid in lead perchlorate medium quantitative reduction of gold as monomer precipitation.After the separation of the solution was diluted and placed overnight, the precipitation of silver chloride quantitative determination of gold and silver precipitate Lead buckle - wet method is successfully applied to the analysis of gold and silver in ore, concentrate and gold dust. The classic fire test method lead ash blowing technology is not suitable for accurate determination of gold and silver in ore and concentrate. Although lead buckle can fully enrich the gold and silver, but in the subsequent formalities (such as gray blowing and nitric acid gold) have a loss phenomenon.