Objective:To evaluate the uncertainty of determination of silver in lead-zinc ore by flame atomic absorption spectrophotometry.Methods:The three main sources of uncertainty,namely the weight of the sample,the concentration of silver in the solution to be tested and the constant volume of the solution to be tested,were evaluated.Results:In this experiment,the silver content in lead-zinc ore is 110 μg/g,and the extended uncertainty is 3 μg/g(including factor K=2).Conclusion:This result can provide a reference for the evaluation of silver content detection results in practice.
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