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试样用盐酸、过氧化氢溶解、用氨水、铵盐和碳酸钠使锡成α-Sn(OH)_4,铅成盐基性碳酸铅一起沉淀,并加入微量铁使沉淀能够迅速完全。分离锡、铅后的溶液用碘量法连续滴定铜、锌。整个分析快捷准确,提高了工作效率。
The sample was dissolved with hydrochloric acid and hydrogen peroxide, precipitated with α-Sn (OH) 4 and lead together with ammonia, ammonium salt and sodium carbonate, and precipitated quickly and completely by adding trace amount of iron. Separation of tin, lead after the solution with iodometry continuous titration of copper, zinc. The entire analysis fast and accurate, improve work efficiency.