测量不确定度是测量质量的指标,合理地赋予被测量值的区间,用于判断该测定值的可靠程度[1]。我们以工作场所空气中甲醛含量测定的过程为例,根据《测量不确定度评定与表示》(JJF1059—1999)技术规 Measurement uncertainty is an indicator of the quality of the measurement and is reasonably assigned to the interval of the measured value to determine the reliability of the measurement [1]. We take the workplace air formaldehyde content as an example, according to “Measurement Uncertainty Evaluation and Expression” (JJF1059-1999) Technical Regulation