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目的:对原子吸收分光光度法测定血液滤过置换液中总钠含量不确定度进行分析,以期找出影响不确定度的因素,为评价检测报告提供科学依据。方法:用原子吸收分光光度法测定血液滤过置换液中总钠含量,并根据《测量不确定度评定与表示》(JJF1059-1999)中有关规定评估其不确定度。结果:本实验的不确定度评估为0.18mg·mL-1。结论:本实验的不确定度主要由标准曲线及仪器读数所引入。
OBJECTIVE: To analyze the uncertainty of determination of total sodium in hemofiltration by atomic absorption spectrophotometry in order to find the factors that affect the uncertainty and provide a scientific basis for evaluating the test report. Methods: The total sodium in hemofiltration was determined by atomic absorption spectrophotometry and its uncertainty was evaluated according to the relevant provisions in “Evaluation and Expression of Uncertainty in Measurement” (JJF1059-1999). Results: The uncertainty of this experiment was estimated to be 0.18 mg · mL -1. Conclusion: The uncertainty of this experiment is mainly introduced by the standard curve and instrument readings.