以PAN为指示剂用硫酸铜标准溶液滴定过量的EDTA标准溶液，从而求得镍的含量。
The excessive EDTA standard solution was titrated using copper sulfate with PAN as indicator so as to obtain nickel content.
以PAN为指示剂用硫酸铜标准溶液滴定过量的EDTA标准溶液，从而求得镍的含量。
The excessive EDTA standard solution was titrated using copper sulfate with PAN as indicator so as to obtain nickel content.
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