项目
Items |
标准值
Standard |
外观
Appearance |
白色颗粒及粉末
White particles and powder |
锌含量/(%)
Assay:Zinc (Zn) |
18-22 |
干燥失重/(%)
Loss on drying |
≤10.0 |
铅(Pb)/(mg/kg)
Lead |
≤2.0 |
砷(As)/(mg/kg)
Arsenic |
≤2.0 |
氧化锌微囊粉