车用陶瓷催化剂中贵金属检测能力验证结果分析
姚慧,张云霞
中汽研汽车检验中心(天津)有限公司,天津 300300
Analysis of proficiency testing results for determination of precious metal in vehicle ceramic catalyst
姚慧,张云霞
CATARC Automotive Test Center(Tianjin) Co., Ltd., Tianjin 300300, China
摘要:为了解和评价有关实验室对车用陶瓷催化剂中贵金属的检测能力,设计并实施了车用陶瓷催化剂中贵金属检测能力验证计划,详细介绍了能力验证计划的实施过程,包括方案设计、结果统计和能力评定、技术分析与建议等。采用单因子方差分析法和平均值一致性检验法对样品进行均匀性和稳定性检验,采用Z比分数评定各参加实验室结果。结果显示,样品均匀性和稳定性符合能力验证要求,各参加实验室检测能力总体较好。本计划的实施有助于了解国内相关领域实验室对车用陶瓷催化器贵金属含量检测的整体水平,为实验室获得认证认可提供技术依据。
Abstract:In order to understand and evaluate the detection ability of precious metal in vehicle ceramic catalyst in relevant laboratories, a proficiency testing program for the detection ability of precious metals in vehicle ceramic catalysts was designed and implemented. The proficiency testing program was described in detail, including design of the program, statistical design, statistical calculation of the results, technical analysis and suggestions, etc. Homogeneity and stability of the samples were tested by the single factor variance analysis and the significance test, and Z-scores were used to evaluate the results of the participating laboratories. The results showed that the homogeneity and stability of the samples met the requirements of proficiency testing program, and the competence of each participating laboratory was generally good. The proficiency testing program would be good for investigating the level of participating laboratories in determination of precious metal content in vehicle ceramic catalyst, and providing technically support for laboratory certification and accreditation.
关键词:车用陶瓷催化剂;贵金属;能力验证
Keywords:vehicle ceramic catalyst; precious metal; proficiency testing
本文引用格式:
姚慧,张云霞.车用陶瓷催化剂中贵金属检测能力验证结果分析[J].化学分析计量,2020,29(6):125-129.
YAO H,ZHANG Y X. Analysis of proficiency testing results for determination of precious metal in vehicle ceramic catalyst[J]. Chemical analysis and meterage,2020,29(6):125-129.
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