摘要
目的对参加饮料中甜蜜素(环己基氨基磺酸钠)含量测定能力验证的实验室检测能力进行评价和分析。方法制备分割水平,对考核样品通过实施能力验证计划,对来自25个省(市)、自治区的60家实验室的测定结果进行稳健统计分析,通过稳健Z比分数评价实验室检测能力。结果通过分析,考核样品中的甜蜜素在P<0.05显著水平时是均匀的,且在3个月内稳定,满足能力验证计划要求。在60个参加实验室中,满意结果数为48家,满意率为80.0%;可疑结果数为6家,可疑率为10.0%;不满意结果数为6家,不满意率为10.0%。结论多数参加实验室检测能力评价为满意,表明饮料中甜蜜素检测水平总体较好。对于离群结果进行技术分析,可以帮助实验室查找原因并进行整改。
Objective To analyze and evaluate the proficiency testing program for the determination of sodium N-cyclohexylsulfamate in drinks. Methods Segment levels were prepared,examining sample was conducted through the implementation of the plan of ability test and verify,60 laboratory from 25 provinces and the autonomous region were measured and the results were conducted for robust statistical analysis,robust Z ratio fraction was used for laboratory testing capability. Results The analysis showed that samples were homogeneous and stable at level of P 0. 05,remaining stable in 3 monthes,which met the requirement of the PTP. Total of 60 laboratories participated in the PTP,among which 48 laboratories had satisfactory results,accounting for 80. 0%,6 laboratories（ 10. 0%） had suspicious results,and 6 laboratories（ 10. 0%） had unsatisfactory results. Conclusion The majority of the participant laboratories passed the test with satisfactory results,indicating that the determination of sodium cyclamate in beverages shows a overall good level. The outlier results are analyzed to help laboratory find the cause and carry out rectification.
出处
《中国卫生检验杂志》
CAS
2016年第5期656-661,共6页
Chinese Journal of Health Laboratory Technology
关键词
能力验证
甜蜜素
稳健统计
饮料
Proficiency testing
Robust statistics
Sodium N-cyclohexylsulfamate
Drinks
