Uncertainty in Gravimetric Determination of Ba Ion
The procedure was given to assess the uncertainty in gravimetric analysis of Ba ion.The uncertainty was originated from the measurement repetition,sample quality,precipitation quality,Ba ion content in filtrate,mechanical loss of Ba ion as well as quantity of BaCl_(2) and Na_(2)SO_(4).Uncertainty of category A and B was quantatively analysed to obtain uncertainty of synthesis standard and extension.