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根据GB/T8576-2010《复混肥料中游离水含量的测定真空烘箱法》标准,对复混肥料水分测量结果不确定度进行分析,建立数学模型,对影响不确定度的各类因素进行评估,得出扩展不确定度。实验测得复混肥料中水分含量为11.23%,其扩展不确定度为0.03%。其中,影响不确定度的最大分量是重复性测定引入的不确定度。
According to GB / T8576-2010 “Determination of free water content in compound fertilizers by vacuum oven method”, the uncertainty of measurement results of compound fertilizers was analyzed and a mathematical model was established to evaluate various factors that affect the uncertainty , Draw expanded uncertainty. The experiment found that the moisture content of compound fertilizers was 11.23% with an extended uncertainty of 0.03%. Among them, the greatest component of uncertainty is the uncertainty introduced by repeatability.