铋磷钼蓝光度法测定铁矿石中磷含量的不确定度评定

Uncertainty Evaluation in Determination of Phosphorus in Iron Ores by Bismuth Phosphomolybdate Blue Photometric Method

采用铋磷钼蓝光度法对铁矿石中磷进行测定，应用统计学理论对其分析结果不确定度的产生原因进行分析，建立测量过程分量的数学模型，分析测量过程不确定度来源及各不确定度分量对总不确定度的影响，确定测定结果的置信区间，给出铁矿石中磷的含量及其置信区间为0．0283％0．0032％。

Phosphorus in iron ores was determined by bismuth phosphomolybdate blue photometric method The causes of uncertainty in measurement were discussed by statistics. Mathematical model for evaluation of each uncertainty in measurement was demonstrated. The sources of each uncertainty and their effects on the total uncertainty were analyzed. Confidence interval of the results has been given. Phosphorus content in iron ores determined by bismuth phosphomolybdate blue photometric method and its confidence interval was given as 0.0283% 0.0032%.