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.
The results agreed weel with those obtained by volumetric analysis.
The potassium silicofluoride volumetric analysis is recommended and described for the determination of SiO_2 in pipe scale in production of WPA.
The influencing factors of the uncertainty of measurement result for uranium in uranium ore by volumetric analysis method were discussed.
