EVALUATION OF UNCERTAINTY OF MEASUREMENT IN THE FAAS DETERMINATION OF SILVER IN AQUEOUS SOLUTION

The main factors,affecting the accuracy of the FAAS determination of silver in aqueous solution were discussed,and the uncertainties of measurements caused by these factors in the determination were evaluated.An expanded uncertainty of 0.020 mg·L-1,at 95% confidencel level and with an effective degree of freedom of 50,was obtained in the determination of 0.10 to 2.00 mg·L-1 of silver.