摘要
参照我国计量技术规范《测量不确定度的评定与表示》及有关方法,对龟苓膏粉中铅含量的测定过程进行了不确定度的来源分析;通过建立数学模型,以图表的方式对其测定过程中出现的各个因素进行分析,找出影响其检测结果的主要来源因素;通过对各分量相对不确定度的计算,最终得出龟苓膏粉中铅含量的扩展不确定度为(0.780±0.0323)mg/kg,k=2。
Consulting the metrology technical specifications Measurement Evaluation and Expression of Uncertainty and the relevant methods, process of Guiling Jelly powder used in the uncertainty analysis of thesource, through the establishment of mathematical model, by way of chart, toanalysis factors were all appeared in the determination process, the mainsources of influence the results of the testing factors were found out, by means of the componentrelative uncertainty calculation, it was extended eventually to reach the lead content in Guiling jelly powder of uncertainty （0.780 ± 0.0323） mg/kg, k=2.
出处
《广州化工》
CAS
2015年第6期139-141,共3页
GuangZhou Chemical Industry
