Community Research and Development Information Service - CORDIS

Abstract

The maximum content of the heavy metals Cd, Cr, Hg and Pb in packaging materials, including plastic packaging, is regulated by directive EC/94/62 which envisages a phased reduction in the maximum content to 100 mg kg{-1} by 2001. Therefore suitable analytical methods capable of determining the amounts of these elements in plastics is needed. A project is underway to design, produce and certify a synthetic polymer reference material for multi-element analysis. The reference material is to be doped at two levels. Sample homogeneity is one important feature of a useful reference material. The use of inductively coupled plasma-mass spectrometry (ICP-MS) to study the homogeneity of the primary batch is described and the suitability of the digestion conditions was assessed. The Cd, Cr and Pb contents in the primary batch are discussed in terms of the variations in their measured contents which illustrate the impact of sample inhomogeneity on analytical results.

Additional information

Authors: DOBNEY A, JRC Geel (BE);TAYLOR P D P, JRC Geel (BE);DE BIÈVRE P, JRC Geel (BE)
Bibliographic Reference: Paper presented: BERM-7 (International Symposium on Biological and Environmental Reference Materials), Antwerpen (BE), April 20-25, 1997
Availability: Available from (1) as Paper EN 40399 ORA
Record Number: 199710849 / Last updated on: 1997-07-08
Category: PUBLICATION
Original language: en
Available languages: en