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依据不确定度评定的相关准则和标准,评估了原子荧光光谱法检测铜精矿中汞的不确定度。应用统计学理论对不确定度产生的原因进行了分析;对测定过程中的主要不确定度分量进行了合理的评定,包括测量重复性引入的不确定度、样品称量引入的不确定度、样品溶液定容和稀释引入的不确定度、校准曲线引入的不确定度等;描述了评定不确度所需各参数的采集和计算方法;给出了合成标准不确定度和测量结果的扩展不确定度。
The uncertainty of mercury detection in copper concentrates by atomic fluorescence spectrometry was evaluated based on the relevant criteria and criteria for the assessment of uncertainty. The causes of uncertainty are analyzed by using statistical theory. The main components of uncertainty in measurement are reasonably evaluated, including the uncertainty introduced by measurement repeatability, the uncertainty introduced by sample weighing, Uncertainty of sample solution volume and dilution introduction, uncertainty introduced by calibration curve, etc .; description of acquisition and calculation method of parameters required for assessment of uncertainty; development of composite standard uncertainty and measurement results uncertainty.