食品多元素检测质控图及国际比对结果在质量控制中的应用  

Application of quality control graph and international intercalibration study on trace elements in foods in quality control

作　　者：李肖菁 刘丽萍[3] 岳兵[2] 李筱薇[2] 赵云峰[2] 吴永宁[1,2] 

机构地区：[1]武汉轻工大学食品科学与工程学院,武汉430023 [2]国家食品安全风险评估中心卫生部食品安全风险评估重点实验室,北京100022 [3]北京市疾病预防控制中心中心实验室,北京100013

出　　处：《食品安全质量检测学报》2014年第3期985-990,共6页Journal of Food Safety and Quality

基　　金：国家国际科技合作专项食品污染监测与风险评估技术合作研究(2011DFA31770)~~

摘　　要：目的通过分析本实验室根据标准参考物测定结果绘制的质控图和2013年10月参加食品中多种微量元素含量测定的国际实验室间比对考核结果,探讨质控图及国际比对考核在实验室质量控制中的应用。方法以Z比分数法评价由国际原子能机构组织的食品中多种微量元素含量测定的国际比对结果,分析食品样品中多种微量元素的测定情况。结果绝大多数元素的考核结果|Z|<1,结果优秀。结论质控图和国际比对实验研究是分析实验室质量控制的有效方法,应鼓励有条件的实验室更多地参与国际比对考核,以提高其检测能力及测定结果的可靠性。Objectives To explore the application of the quality control graph of the determination of standard reference material and international intercalibration study in quality control by the analysis of our la-boratory’s results from interlaboratory comparison with trace elements in foods in October 2013. Methods Z-scores were used to appraise the results from the interlaboratory comparison with trace elements in foods or-ganized by International Atomic Energy Agency, and analyzed the determination of the concentrations of trace elements in foods. Results The absolute values of Z-score of concentrations of almost trace elements deter-mined by our laboratory were less than 1, indicating results were excellent. Conclusion The quality control graph and international intercalibration study is a greatly effectively approach of quality control.

关 键 词：质量控制图 国际比对实验研究 食品 微量元素 质量控制 

分 类 号：O657[理学—分析化学] TS207.3[理学—化学]