食品中二英类化合物国际比对结果分析及其在质量控制中的应用  

The international intercalibration study on dioxins in foods, analysis of results,and the application in QA/QC

作　　者：张磊[1] 李敬光[1] 赵云峰[1] 吴永宁[1] 

机构地区：[1]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,北京100021

出　　处：《卫生研究》2013年第3期486-490,共5页Journal of Hygiene Research

基　　金：十二五科技支撑计划(No.2011BAK10B07)

摘　　要：目的通过分析本实验室2005-2012年参加食品中二英类化合物国际实验室间比对的考核结果,探讨国际比对考核在实验室质量保证和控制中的应用。方法以Z比分数法评价由挪威公共卫生研究所组织的食品中二英测定的国际比对研究结果,分析多种食品样品中多氯代苯并二英和多氯代苯并呋喃(PCDD/Fs)和二英样多氯联苯(dl-PCBs)测定情况。结果绝大数食品样品中PCDD/Fs和dl-PCBs考核结果 |Z|<1,结果优秀。结论国际比对实验研究是有效的实验室分析质量保证和控制方法,应鼓励有条件的实验室更多地参与国际比对考核,提高检测能力及测定结果的可靠性。Objective To study the application of international intercalibration study in quality assurance and control（QA/QC） by the analysis of our laboratory＇s results from interlaboratory comparison on dioxins in foods from 2005-2012.Methods Z-scores were used to appraise the results from the interlaboratory comparison on dioxins in foods organized by Norwegian Institute of Public Health,and analyze the determination of PCDD/Fs and dl-PCBs in various foods.Results The absolute values of z-score of concentrations of PCDD/Fs and dl-PCBs in almost all foods determined by our laboratoryare were all less than 1,indicating excellent results.Conclusion The international intercalibration study is a greatly effectively approach of QA/QC.Thus,qualified laboratories should be encouraged more involved in international comparison to improve the detection ability and the reliability of the results.

关 键 词：国际比对实验研究 食品 二噁英类化合物 质量保证和控制 

分 类 号：TS207.5[轻工技术与工程—食品科学]