Publication Date:
2011-06-23
Description:
The results of and findings from an interlaboratory comparison among laboratories carrying out food testing of pesticide residues in the APEC (Asia–Pacific Economic Cooperation) region are presented and discussed to show critical roles of chemical metrology infrastructure in establishing traceability of measurements and in supporting existing measurement capability in safety and quality of food trade. The study material, which was prepared and certified by Korea Research Institute of Standards and Science (KRISS), was freeze-dried Chinese cabbage powder fortified with two organophosphorous pesticides (diazinon and chlorpyrifos). Among 14 participants, 12 laboratories were accredited based on ISO/IEC17025 and one laboratory was under assessment for the accreditation at the time of this study. Though all participants demonstrated very good intra-day repeatability and inter-day intermediate precision, many of them showed a large bias from the certified values. It is suggested that in addition to the accreditation system, economies are encouraged to develop appropriate chemical metrology infrastructure, which could effectively support laboratories to assure measurement traceability to SI, for which NMIs could play significant roles through their metrological services recognized in Mutual Recognition Arrangement (MRA) of the International Committee for Weights and Measures (Comité International des Poids et Mesures, CIPM). Content Type Journal Article Pages 1-7 DOI 10.1007/s00769-011-0795-9 Authors Byungjoo Kim, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science, Yuseong, Daejeon, 305-340 Korea Seonghee Ahn, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science, Yuseong, Daejeon, 305-340 Korea Yoshito Mitani, Centro Nacional de Metrologia, Municipio deEl Marques, 76246 Queretrao, Mexico Journal Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement Online ISSN 1432-0517 Print ISSN 0949-1775
Print ISSN:
0949-1775
Electronic ISSN:
1432-0517
Topics:
Chemistry and Pharmacology
