指标

NiSO4晶体(优级品)

NiSO4晶体(合格品)

检测方法

外观

翠绿色颗粒状晶体、颜色均匀、无结块、无杂物

目测

Ni

≥21. 50%

≥21. 50%

络合滴定

Co

≤0.0010%

≤0.0020%

GB/T8647.1-2006

-

GB/T8647.10-2006

Cu

≤0.0010%

≤0.0020%

Fe

≤0.0010%

≤0.0020%

Mg

≤0.0010%

≤0.0020%

Pb

≤0.0010%

≤0.0020%

Zn

≤0.0010%

≤0.0010%

Cd

≤0.0010%

≤0.0010%

Mn

≤0.0010%

≤0.0010%

Si

≤0.0010%

≤0.0020%

Ca

≤0.0010%

≤0.0020%

FAAS ICP-MS

Na

≤0.0020%

≤0.0020%

Al

≤0.0010%

≤0.0010%

Li

≤0.0010%

≤0.0020%

Cr

≤0.0015%

≤0.0010%

Cl^-

≤ 0.010%

≤ 0.010%

离子选择电极

水不溶物

≤0.02%

≤0.03%

GB11901-1989