They admit that in the production of their product leadperoxide is used.
他们承认，他们的产品过氧化铅生产使用。
2
Soluble lead sulfide can be extracted from the residue by 10% hydrogen peroxide, 15% ammonium acetate and 5% acetyl hydrate.
用10%过氧化氢—5%醋酸—15%醋酸铵浸取上述残渣，可浸取溶解硫化态铅；
3
The sample is treated with hydrochloric acid and hydrogen peroxide. The analytical conditions have been studied. The elements of coper, iron and zinc can be determined in the presence of lead and tin.