Evaluation of uncertainty of potassium permanganate standard solution(0.02 mol·L~(-1)) concentration

Objective To evaluate the uncertainty of the concentration of potassium permanganate standard solution(0.02 mol·L-1) prepared and standardized by the method of Chinese Pharmacopoeia(edition 2010).Methods A mathematic model was established to evaluate the factors affecting sample detection.Results Each component of the uncertainty was calculated by analyzing the various variable parameters among the procedures.The combined uncertainty was then finally obtained by synthesizing the uncertainties of various component variables.Conclusion The method of uncertainty evaluation is reasonable and reliable.