Accurate Quantification of Cadmium, Chromium, Mercury and Lead in Plastics for RoHS Compliance using the Agilent 7500ce ICP-MS

This application note describes the quantification of cadmium, chromium, lead and mercury in plastic materials by external calibration using the Agilent 7500ce ICP-MS system equipped with an Octopole Reaction System (ORS). Isotope dilution analysis with ICP-MS was used as a confirmatory technique. Good agreement of the results obtained by the two calibration approaches was achieved. The sample digestion methodology, tuning considerations, results and uncertainty estimations are discussed. The method validated with IDMS results has potential as a fast analytical tool for compliance testing laboratories. Author Sarah Hill and Rebeca Santamaria-Fernandez LGC Ltd. Queens Road Teddington, Middlesex, TW11 0LY UK Application note