jrc79301_report%20eu-rl%20pahs%20pt%20on%20chocolate%202012_ver11

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European Commission Joint Research Centre Institute for Reference Materials and Measurements Contact information Thomas Wenzl Address: Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel, Belgium E-mail: jrc-irmm-crl-pah@ec.europa.eu Tel.: +32 14 571 320 Fax: +32 14 571 783 http://irmm.jrc.ec.europa.eu/ http://www.jrc.ec.europa.eu/ Legal Notice Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of this publication. Europe Direct is a service to help you find answers to your questions about the European Union Freephone number (*): 00 800 6 7 8 9 10 11 (*) Certain mobile telephone operators do not allow access to 00 800 numbers or these calls may be billed. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server http://europa.eu/. JRC 79301 EUR 25806 EN ISBN 978-92-79-28532-5 (pdf) ISSN 1831-9424(online) doi: 10.2787/74998 Luxembourg: Publications Office of the European Union, 2013 © European Union, 2013 Reproduction is authorised provided the source is acknowledged. Printed in 2013
Report on the 10 th inter-laboratory comparison organised by the European Union Reference Laboratory for Polycyclic Aromatic Hydrocarbons Four marker PAHs in chocolate and cocoa butter Radoslav Lizak, Zuzana Zelinkova, Philippe Verlinde and Thomas Wenzl* *co-ordinator EC-JRC-IRMM (07.01.2013) 3
Page 1: Report on the 10 th inter-laborator
Page 5 and 6: 1 Summary This report presents the
Page 7 and 8: 3 Scope As specified in Regulation
Page 9 and 10: Table 3: List of participating Offi
Page 11 and 12: The stability of the test material
Page 13 and 14: 8 Design of the proficiency test Th
Page 15 and 16: Figure 1 and Figure 2 provide overv
Page 17 and 18: Table 8: Compilation of z-scores ca
Page 19 and 20: Table 9: Compilation of z-scores ca
Page 21 and 22: Table 10: Compilation of z-scores c
Page 29 and 30: 9.4 6Evaluation of compliance with
Page 31 and 32: 13 References 1 EU, COMMISSION REGU
Page 33 and 34: ANNEX 1: Announcement of the PT on
Page 36 and 37: Confirmation of participation 36
Page 38: ANNEX 4: Documents sent to particip
Page 43: GUIDANCE FOR REPORTING 43
Page 48 and 49: ANNEX 5: Technical specifications o
Page 50: ANNEX 6: Homogeneity of the test ma
Page 54:
ANNEX 7: Questionnaire and method p
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Method performance data reported by
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Method performance data reported by
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Results reported by NRLs for the co
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µg/kg Distribution of individual r
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Results reported by OCLs for the co
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Results reported by OCLs for the su
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Results reported by OCLs for the fa
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As the Commission’s in-house scie
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