摘要
分析天然橡胶(NR)生胶杂质含量检测的精密度和不确定度。结果表明:NR生胶杂质质量分数检测的精密度符合GB/T 8086—2008要求,不确定度可表示为0.000 927±0.000 098,置信水平约为95%,检测结果近似服从正态分布;NR生胶杂质质量分数的检测结果一致性好,分散性在可接受范围内。
The precision and uncertainty of natural rubber impurity content determination was analyzed.The results showed that,the precision of the impurity mass fraction met the requirements of GB/T 8086—2008,the uncertainty could be expressed as 0. 000 927±0. 000 098,and the confidence level was about 95%. The tested data of impurity mass fraction obeyed normal distribution,which had good consistency and acceptable variation.
引文
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