Microsoft Word 李肖菁.doc

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1 5 3 Vol. 5 No Journal of Food Safety and Quality Mar., , 李肖菁 2, 刘丽萍 3, 岳兵 2, 李筱薇 2*, 赵云峰 2, 吴永宁 (1., ; 2., ; 3., ) 1, 2 摘要 : 目的 , 方法 Z 结果 Z <1, 结论关键词 : ; ; ; ; Application of quality control graph and international intercalibration study on trace elements in foods in quality control LI Xiao-Jing 1, 2, LIU Li-Ping 2, YUE Bing 2, LI Xiao-Wei 2*, ZHAO Yun-Feng 2, WU Yong-Ning 1, 2 (1. College of Food Technology and Engineering, Wuhan Polytechnic University, Wuhan , China; 2. Key Laboratory for Food Safety Risk Assessment, MOH, China National Centre for Food Safety Risk Assessment, Beijing , China; 3. Central Laboratory of Beijing Center for Disease Control and Prevention, Beijing , China) ABSTRACT: 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 laboratory s results from interlaboratory comparison with trace elements in foods in October Methods Z-scores were used to appraise the results from the interlaboratory comparison with trace elements in foods organized 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 determined 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. KEY WORDS: quality control graph; international intercalibration study; food; trace elements; quality control 基金项目 : (2011DFA31770) Fund: Supported by Food Contamination Monitoring and Risk Assessment Techniques Collaborative Research (2011DFA31770) * 通讯作者 :,, [email protected] *Corresponding author: LI Xiao-Wei, Associate Researcher, China National Center for Food Safety Risk Assessment, No.37, Guangqu Road, Chaoyang District, Beijing , China. [email protected]

2 引言,, [1] (inductively coupled plasma mass spectrometry, ICP-MS) ICP-MS ;, ; 7~9 [2] 20 80, 1 ICP-MS, ICP-MS, ICP-MS [3], ICP-MS,,,,, 2~4,, 2 材料与方法 2.1 参加比对实验研究概况, (International Atomic Energy Agency, IAEA) IAEA, [4,5] IAEA-461, 13, 1 表 1 国际实验室比对研究食品样品中多元素含量 Table 1 Concentration of trace elements in food sample from international study on interlaboratory intercalibration (mg/kg) IAEA (mg/kg) Z Cd Co Cr Cu Fe Hg Mg Mn Ni Pb Se V Zn 试剂与仪器试剂与标准参考物 NIST 1566b, (BVⅢ ),, ( 99.99%), ( %) : Cd Co Cr Cu Hg

3 3, : 987 Mn Ni Pb Se Zn 10 mg/l, V 100 mg/l, Fe Mg 1000 mg/l, Agilent, 3% : Li Y Ce Ti Co 10 ng/ml, Agilent : 6 Li Sc Ge Rh Y In Tb Bi 10 μg/ml, Agilent 仪器 ICP-MS: Agilent, 7700 : CEM, MARS 5.0 Milli-Q 仪器分析条件 ICP-MS 测定方法样品前处理 0.6 g NIST 1566b( g) 50 ml 6 ml,,,,, 25 ml 测定 μg/l; μg/l; μg/l( 3% ), Mass Hunter( Agilent ),,, 2.4 质量控制图的绘制 [1,6] ICP-MS,,, (National Institute of Standards and Technology, NIST) 2.5 比对结果评价方法 Z, Z : (x X ) Z = σ, x= ; X =IAEA ; σ=12.5% [3, 4] 3 结果,, ( ) 1, NIST, 2s -2s, Table 2 表 2 仪器分析条件 ICP-MS instrument operating conditions 1550 W mm 0.77 L/min 0.1 r/s 0 L/min 0.3 r/s Barbinton mm, / mm,

4 Fig. 1 The quality control graphs of Cd, Co, Fe, Ni, V and Zn 表 3 NIST 1566b 中部分元素含量 Table 3 Concentration of trace elements and in NIST 1566b (mg/kg) Cd 2.48±0.08 Co 0.371±0.009 Fe 205.8±6.8 Ni 1.04±0.09 V 0.577±0.023 Zn 1 424±46 1, NIST 1566b 10,, ;,, , 13, 1 Z 1 2 1, mg/kg,,, Z,

5 3, : 989 Fig. 2 2 Z Z-scores of concentrations of trace elements in food samples : Z -1~1 ; Z 1~2 ; Z 2~3, Z 3 [5,7] 1, Se, 12 4 讨论 1566b,,, 2~3,, 1566b,,,,,,,,, Z <2, 95%, 2< Z <3, 5%, Z >3, 0.1% [3, 7],,,,,, ( ),,,,

6 990 5,,,,,,,,,,, 参考文献 [1]., [J]., 2006, 16(8): Wang LL. Statistics technology and assessment method of ability verification and nterlaboratory comparison [J]. Chin J Health Lab Technol, 2006, 16(8): [2] Nardi EP, Evangelista, Fábio S, et al, The use of inductively coupled plasma mass spectrometry (ICP-MS) for the determination of toxic and essential elements in different types of food samples [J]. Food Chem, 2009, 112(3): [3]. [M]. :, Wu YN. Food contamination monitoring and control in theory and practice [M]. Beijing: Chemical Industry Press, [4] Coquery M, Carvalho FP, Azemard S, et al. The IAEA worldwide intercomparison exercises ( ): determination of trace elements in marine sediments and biological samples [J]. Sci Total Environ, 1999, 237: [5] Vasileva E, Azemard Sabine, Oh Jae, et al. Certification for trace elements and methyl mercury mass fractions in IAEA-452 scallop (Pecten Maximus) sample [J]. Accreditat Qual Assur, 2011, 16(8-9): [6],,. [J]., 2011, 19(1): Zhang LS, Yu H, He TL. The application of quality control graph in the determination of Pb in food [J]. Adv Meas Lab Manage, 2011, 19(1): [7],,,. Z [J]., 2004, 14(1): Liu PZ, Wang JM, Sun L, et al. Assessment of laboratory quality control using Z-score [J]. Chin J Health Lab Technol, 2004, 14(1): 作者简介 ( 责任编辑 : 张宏梁 ) 李肖菁, 硕士研究生, 主要研究方向为食品安全风险评估 [email protected] 李筱薇, 副研究员, 主要研究方向为食品安全风险评估 [email protected]

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Microsoft Word 聂雪梅.doc 4 4 Vol. 4 No. 4 2013 8 Journal of Food Safety and Quality Aug., 2013 聂雪梅 *, 李立, 孙利, 高飞 (, 100123) 摘要 : 2011 12,, 2007~2011,,,, 关键词 : ; ; ; ; Trade and notification situation on food import and export