The excess tin chloride addition produces black mercury precipitation and is about to seriously affect the determination of iron by using potassium chromate volumetric analysis method.
重铬酸钾容量法测铁中，二氯化锡超量产生黑色汞沉淀，严重影响测定。
The excess tin chloride addition produces black mercury precipitation and is about to seriously affect the determination of iron by using potassium chromate volumetric analysis method.
重铬酸钾容量法测铁中，二氯化锡超量产生黑色汞沉淀，严重影响测定。
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