Trace elements in polyethylene (low level) This certificate is valid until 1/2006; this validity may be extended as further evidence of stability becomes available. The minimum sample intake is 600 mg. References: ISO Catalogue 1994, Geneva, Switzerland Association of Polymer Manufactures Europe (APME), Brussels, Information system on plastics wastes management in Western Europe, Volume 1 and 2, March 1994 Pauwels J, Lamberty A, De Bievre P, Grobecker K-H, Bauspiess C, Certified reference materials for the determination of cadmium in polyethylene, Fresenius J Anal Chem (1994) 349: 409-411 Pauwels J and Vandecasteele C, Determination of the minimum sample mass of a solid CRM to be used in chemical analysis, Fresenius J Anal Chem (1993) 345: 121-123 Van Borm W, Lamberty A, Quevauviller Ph, Collaborative study to improve the quality control of trace element determinations in polymers. Part 1. Interlaboratory study. Fresenius J Anal Chem (1999) 365: 361-363 Pauwels J, Lamberty A, Schimmel H, Homogeneity testing of reference materials, Accred Qual Assur (1998) 3: 51-55 Van Grieken and Markowicz, Handbook of X-ray Spectrometry, Inc, New York, 1992, Table 1, p. 305 Kurfürst U, Solid Sample Analysis, Springer 1997 (ISBN 3-540-62470-8) Lamberty A, Schimmel H and Pauwels J, The study of the stability of reference materials Fresenius J Anal Chem (1998) 360: 359-361 Guide to the Expression of Uncertainty in Measurement, ISO (1995), Geneva, Switzerland EURACHEM-Quantifying Uncertainty in Analytical Measurement (1995) LGC Information Services, Queens Road, Teddington, Middlesex TW11 0LY, England Pauwels J, Lamberty A and Schimmel H, The determination of the uncertainty of reference materials certified by laboratory intercomparison, Accred Qual Assur (1998) 3: 180-184 Pauwels J, van der Veen A M H, Lamberty A, Schimmel H, Evaluation of Uncertainty of Reference Materials Accred Qual Assur (2000) 5: 95-99 Linsinger T P J, Pauwels J, van der Veen A, Schimmel H, Lamberty A, Homogeneity and Stability of Reference Materials, Accred Qual Assur (2001), 6: 20-25 |
