作　　者： ; ; ; ; ; ; ; ; (刘岩顺）;

机构地区： 国家烟草质量监督检验中心

出　　处： 《烟草科技》 2017年第2期33-41,共9页

摘　　要： 为进一步确定YC/T 207—2014标准测量方法的重复性限(r)和再现性限(R),利用2016年国家烟草质量监督检验中心实施的YC/T 207—2014标准测量方法共同实验,对50家实验室的3个水平样品检测结果进行柯克伦和格拉布斯离群值检查,按照GB/T 6379.2—2004/ISO 5725-2:1994的方法获得了烟用纸张中甲醇、丁酮、苯、1-乙氧基-2-丙醇、乙酸正丁酯和邻二甲苯6种溶剂残留测定结果的重复性和再现性精密度评价结果。结果表明:在重复性条件下,6个溶剂残留指标测定结果的相对重复性标准差(RSDr)在1.7%~4.5%之间,满足YC/T 207—2014所规定重复性条件下10%的允许差要求;在再现性条件下,除了最低质量分数水平的1-乙氧基-2-丙醇和邻二甲苯两项指标外,溶剂残留其他指标的相对再现性标准差(RSDR)在5.6%~14.4%之间。由于YC/T 207—2014标准方法精密度与测量水平具有良好的线性关系,最终以重复性标准差(Sr)、再现性标准差(SR)对应测量水平均值的线性函数关系作为精密度的评价结果。 To further evaluate the precision（repeatability and reproducibility） of the standard measurement method described in YC/T 207—2014,a collaborative study involving 50 laboratories was conducted by China National Tobacco Quality Supervision and Test Center in 2016.The study analyzed three paper samples spiked with solvents at different residual levels.After removing the outliers detected by Cochrane＇s test and Grubbs＇ test,the statistical estimations on the repeatability and reproducibility of measurement results for residues of six solvents（methanol,butanone,benzene,1-ethoxy-2-propanol,n-butyl acetate and o-xylene） were carried out according to the methods described in GB/T 6379.2—2004/ISO 5725-2：1994.The results showed that under repeatability conditions,the relative repeatability standard deviations（RSDr） of the above six solvents at three residual levels ranged from 1.7% to 4.5%,which were below the tolerance of 10% required by YC/T 207—2014;under reproducibility conditions,the relative reproducibility standard deviations（RSDR） of the above six solvents at three residual levels were in the range of 5.6%-14.4% except for those of 1-ethoxy-2-propanol and o-xylene at the lowest residual level.In addition,good linear relationships were found between the precisions of the method and the mean values of measurement results,therefore the precisions of the measurement results were finally expressed as the linear functions of repeatability standard deviation（Sr） and reproducibility standard deviation（SR） corresponding to the mean value of measurement results.

关 键 词： 烟用纸张 溶剂残留 精密度 共同实验 重复性 再现性

领　　域： [轻工技术与工程]