In order to meet the European environment standards
i.e.94/62/EC(Packaging and Packaging Waste 2004) and RoHS2003(Restriction of Hazardous Substance in Electrical and Electronic Equipment)
three Chinese glass reference materials prepared by Chinese Academy of Geological Sciences were analyzed for certification by a number of laboratories with over 20 analytical methods.We participated in the certification analyses by using instrumental neutron activation analysis.Elemental concentrations of the glass samples were determined using relative method based on chemical standards
with k0 method as reference.NIST SRM 1633a was used for quality control.The results
together with preliminary reports from other participating labs