目的建立原子吸收光谱法测定乳品中铅的不确定度评定方法。方法应用测量不确定度评定方法分析测定过程中不确定度来源。结果找出影响不确定度的因素,给出不确定度,如实反映测量的置信度和准确性。结论该不确定度评价方法在原子吸收分析工作中有较强的实用价值。 Objective To establish a method for the determination of the uncertainty of lead in dairy products by atomic absorption spectrometry. Methods The method of measurement uncertainty was used to analyze the source of uncertainty in the measurement. The results identify the factors that affect the uncertainty, given the uncertainty, faithfully reflect the measurement of confidence and accuracy. Conclusion The uncertainty evaluation method has strong practical value in the work of atomic absorption analysis.