【摘要】 化学需氧量是表征沼液特性的重要参数。为找出对本实验测产生影响的主要因素,通过分析测试过程,量化不确定度分量,计算合成不确定度和扩展不确定度。实验测量不确定度为1.469×10^-2,在置信区间为95%时的扩展不确定度为2.938×10^-2,可为样品检测提供参考。更多还原

【Abstract】 Chemical Oxygen Demand is one of the most important parameter for biogas slurry. To find the main influence factors for the parameter determination in laboratory,the uncertainty sources in the determination process were analyzed,and the uncertainty fraction were evaluated. The results showed that combined uncertainty was 1. 469 × 10^-2,while expanded uncertainty was 2. 938 × 10^-2 in the confidence interval of 95%.更多还原