摘要
以钼蓝分光光度法测定石灰石、白云石中二氧化硅分析方法标准的精密度共同试验测量数据为例,按GB/T 6379.2—2004的统计方法进行统计,最终确定了分析方法的重复性限r和再现性限R与含量(水平)m的函数关系式。对统计中数据的处理、回归方程的图示确定、分析方法精密度的表示等问题进行了讨论。以含量分段表示重复性限和再现性限,在分析实践中更为实用。对共同试验和数据处理中要注意的问题进行了深入讨论。
The GB/T 6379. 2--2004 statistical data analysis methodology was applied to analyze the data which were obtained from the cooperative experiments on the precision of the molybdenum blue photometric method that was employed to determine the silicon dioxide in limestone and dolomite. Based on the statistical analysis, a functional expression of the relationship between reproducibility limit r, reproducibility limit R and content （level） m has been obtained. The issues such as data treatment procedure, the determination of the graphic expression for the regression equation and the expression of method precision, etc. , have also been discussed in the paper. It was found that it is more practical to use the content to sectionally represent repeatability limit and reproducibility limit. In addition, several problems that need to care about during conducting cooperation assay and handling data have also been deeply discussed.
出处
《中国无机分析化学》
CAS
2014年第1期69-75,共7页
Chinese Journal of Inorganic Analytical Chemistry
基金
国家标准委员会项目(20101772-T-605)资助
关键词
精密度
准确度
统计方法
重复性限
再现性限
允许差
precision
accuracy
statistical method
repeatability limit
reproducibility limit
tolerance
