柴油闪点能力验证计划实施及方法精密度评价  

Implementation of Diesel Flash Point Proficient Testing Plan and Method Precision Evaluation

作　　者：石玉明 佟勇 邵路 王静静 赵家玮 丁仕兵 张庆建 SHI Yuming;TONG Yong;SHAO Lu;WANG Jingjing;ZHAO Jiawei;DING Shibing;ZHANG Qingjian(Qingdao Black Cat New Materials Research Institute Co.,Ltd.,Qingdao Shandong 266500,China;Technology Center of Qingdao Customs,Qingdao Shandong 266500,China;Qingdao University of Technology,Qingdao Shandong 266520,China)

机构地区：[1]青岛黑猫新材料研究院有限公司,山东青岛266500 [2]青岛海关技术中心,山东青岛266500 [3]青岛理工大学,山东青岛266520

出　　处：《当代化工》2025年第1期117-120,252,共5页Contemporary Chemical Industry

基　　金：国家重点研发计划项目(项目编号:2022YFC3002402)。

摘　　要：介绍了柴油闭口闪点能力验证计划实施过程,并基于多年的柴油闭口闪点能力验证回收结果评价检测方法的精密度。在6轮次的柴油闪点能力验证中,采用宾斯基马丁闭口杯法测定不同含量水平的柴油闭口闪点,由获得的数据建立了方法重复性限r和再现性限R的计算公式,分别为r=0.0152X-0.0901和R=0.0669X-1.1101。对拟合公式计算结果与国家标准中的精密度公式计算结果的一致性进行了评价。结果表明:能力验证计划的检测数据得到的精密度要优于GB/T 261—2021标准方法规定的精密度,建议相关单位对该国家标准重新修订时考虑引用能力验证结果,相关实验室应采用更为精密的要求加强对闪点的质量控制。The execution of a proficient testing plan of diesel closed-cup flash point was discussed,and the precision of the test method was evaluated based on the proficiency testing plan results.In six rounds of proficiency testing data,the closed flash point of diesel fuel at different content levels was measured using the Binskey-Martin closed-cup method,and the precision of the method was evaluated.The fitting calculation formulas for repeatability limit r and reproducibility limit R were established as r=0.0152X-0.0901 and R=0.0669X-1.1101.The linear fitting curves of precision were used to evaluate the consistency between the fitting formula calculation results and the results calculated as to the national standard method.The results showed that the precisions obtained from the detection data of the proficiency testing plan were prior to the precisions specified in the GB/T 261—2021 standard method.Therefore,it was recommended to use the proficiency plan testing results when the GB/T 261—2021should be revised,and to strengthen the quality control by using the prior precisions of flash points within the laboratories.

关 键 词：柴油 闭口闪点 能力验证计划 精密度评价 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]